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JP2014033444

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This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
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DESCRIPTION JP2014033444
Abstract: A mobile apparatus having a balanced armature and outputting and playing back audio
data signals. An audio data signal input unit for receiving an audio data signal, at least one audio
output means for outputting an audio signal in a first reproduction frequency band of the
received audio data signal, and a received audio data signal An audio signal of a second
reproduction frequency band, and the second reproduction frequency band uses the balanced
armature 202 different from the first reproduction frequency band, and the first reproduction
frequency band using at least one filter. Adjusting the second reproduction frequency band
different from the first reproduction frequency band and adjusting the combination of the
adjusted first reproduction frequency band and the adjusted second reproduction frequency
band Audio signal processing wider than each of the first reproduction frequency band and the
adjusted second reproduction frequency band And a 310. [Selected figure] Figure 3
Mobile device and control method
[0001]
The present invention relates to a mobile device and control method, and more particularly, to a
technique for effectively outputting an audio data signal and reproducing it with a balanced
armature.
[0002]
With the development of mobile device technology, technology for audio output means (receiver)
used in the mobile device is also rapidly developed.
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And, with the rapid development of communication technology for mobile devices, the
reproduction frequency band for audio data signals output from the mobile devices is also
expanded.
[0003]
However, in the case of the audio output means attached to the mobile device, a small audio
output means is attached in consideration of the portability of the mobile device. However, when
the small audio output means is attached, the user of the mobile device can only hear the sound
limited to the reproduction frequency band corresponding to the reception sound level of the
telephone call. Therefore, recently, as the reproduction frequency band for the audio data signal
of the mobile device becomes wide, there is a demand for an audio output means capable of
covering all the widened reproduction frequency band.
[0004]
U.S. Patent Application Publication 2012-0087533
[0005]
One embodiment of the present invention provides a mobile device and control method having a
balanced armature to output an audio data signal.
[0006]
In addition, an embodiment of the present invention provides a mobile apparatus and control
method including a balanced armature that adjusts each reproduction frequency band to the
audio output means through the audio signal processing unit to output an audio data signal.
[0007]
A mobile device according to an embodiment of the present invention comprises an audio data
signal input of said mobile device for receiving an audio data signal.
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The mobile device also includes at least one audio output means for outputting an audio signal of
a first reproduction frequency band of the received audio data signal, and an audio signal of a
second reproduction frequency band of the received audio data signal. It has a balanced
armature to output.
The second reproduction frequency band is different from the first reproduction frequency band.
The apparatus includes an audio signal processor that adjusts the first reproduction frequency
band and the second reproduction frequency band using at least one filter. The combination of
the adjusted first frequency band and the adjusted second frequency band is wider than each of
the adjusted first reproduction frequency band and the adjusted second reproduction frequency
band.
[0008]
According to another aspect of the present invention, a method of controlling a mobile device is
provided. An audio data signal is received. The first reproduction frequency band of the received
audio data signal and the second reproduction frequency band of the received audio data signal
are adjusted using at least one filter. The second reproduction frequency band is different from
the first reproduction frequency band. The combination of the adjusted first frequency band and
the adjusted second frequency band is wider than each of the adjusted first reproduction
frequency band and the adjusted second reproduction frequency band. The adjusted audio data
signal of the first reproduction frequency band is outputted by the at least one audio output
means, and the audio data signal of the adjusted second reproduction frequency band is
outputted by the balanced armature.
[0009]
According to one embodiment of the present invention, the use of a balanced armature broadens
the reproduction frequency band in which the audio data signal is reproduced.
[0010]
A mobile device including a balanced armature according to an embodiment of the present
invention can adjust each reproduction frequency band to the audio output means to reproduce
the audio data signal through the audio signal processing unit.
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[0011]
FIG. 1 is a schematic block diagram illustrating a mobile device according to an embodiment of
the present invention.
FIG. 1 is a front view of a mobile device according to an embodiment of the present invention.
FIG. 5 is an internal block diagram of a mobile device according to an embodiment of the present
invention. FIG. 5 shows a reproduction frequency band of a mobile device comprising one audio
output means according to an embodiment of the present invention. FIG. 5 shows a reproduction
frequency band of a mobile device comprising one audio output means according to an
embodiment of the present invention. FIG. 5 is a diagram illustrating a reproduction frequency
band of a mobile device according to an embodiment of the present invention. FIG. 5 is a diagram
illustrating a reproduction frequency band of a mobile device according to an embodiment of the
present invention. FIG. 7 is a diagram showing the contents of the audio signal processing unit
adjusting a first reproduction frequency band according to an embodiment of the present
invention. FIG. 7 is a diagram showing the contents of the audio signal processing unit adjusting
a first reproduction frequency band according to an embodiment of the present invention. FIG. 7
is a diagram showing the contents of the audio signal processing unit adjusting a first
reproduction frequency band according to an embodiment of the present invention. It is a figure
which shows the content which the audio signal processing part by one Embodiment of this
invention adjusts a 2nd reproduction ¦ regeneration frequency band. It is a figure which shows
the content which the audio signal processing part by one Embodiment of this invention adjusts a
2nd reproduction ¦ regeneration frequency band. It is a figure which shows the content which
the audio signal processing part by one Embodiment of this invention adjusts a 2nd reproduction
¦ regeneration frequency band. FIG. 6 is a diagram showing a frequency spectrum in which the
frequency spectrum of the audio output means and the frequency spectrum of the balanced
armature according to an embodiment of the present invention are combined. FIG. 7 is an
internal block diagram of a mobile device according to another embodiment of the present
invention. FIG. 7 illustrates crossover frequency according to an embodiment of the present
invention. FIG. 7 illustrates crossover frequency according to an embodiment of the present
invention. FIG. 7 illustrates crossover frequency according to an embodiment of the present
invention. FIG. 7 is an internal block diagram of a mobile device according to another
embodiment of the present invention. FIG. 7 is a diagram showing a frequency spectrum during
wide band reproduction according to an embodiment of the present invention. FIG. 7 is a diagram
showing a frequency spectrum during wide band reproduction according to an embodiment of
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the present invention. FIG. 7 is a diagram showing a frequency spectrum during wide band
reproduction according to an embodiment of the present invention. FIG. 5 is a diagram
illustrating the case where a dynamic receiver and a balance armature are simultaneously used in
a narrow band reproduction frequency band according to an embodiment of the present
invention. FIG. 5 is a diagram illustrating the case where a dynamic receiver and a balance
armature are simultaneously used in a narrow band reproduction frequency band according to
an embodiment of the present invention. FIG. 5 is a diagram illustrating the case where a
dynamic receiver and a balance armature are simultaneously used in a narrow band reproduction
frequency band according to an embodiment of the present invention.
FIG. 5 is a diagram showing the frequency response in which the band pass filter is used in the
audio output means according to an embodiment of the present invention. FIG. 5 illustrates a
process of performing a reproduction frequency band adjustment according to an embodiment of
the present invention. FIG. 5 illustrates a process of performing a reproduction frequency band
adjustment according to an embodiment of the present invention. It is a flowchart with respect to
the control method of the mobile apparatus of one Embodiment of this invention. It is a flowchart
with respect to the control method of the mobile apparatus of other embodiment of this
invention. It is a flowchart with respect to the control method of the mobile apparatus of other
embodiment of this invention. It is a flowchart with respect to the control method of the mobile
apparatus of other embodiment of this invention. It is a flowchart with respect to the control
method of the mobile apparatus of other embodiment of this invention.
[0012]
Hereinafter, exemplary embodiments according to the present invention will be described in
detail with reference to the contents described in the attached drawings. However, the present
invention is not limited or limited by the exemplary embodiments. Like reference symbols in the
drawings indicate members performing substantially the same function.
[0013]
As in the first and second terms, terms including ordinal numbers can be used to describe
various components, but the components are not limited by the terms. The above terms are used
to distinguish one component from another. For example, without departing from the scope of
the present invention, the first component can be named as the second component, and similarly,
the second component can be named as the first component. The term "and / or" includes any
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and all combinations of the listed items or any combination of the listed items.
[0014]
When it is mentioned that a component is "connected" or "connected" to another component, it
may also be directly connected or connected to the other component, but It should be
understood that other components may be present. On the other hand, when it is mentioned that
one component is "directly linked" or "directly connected" to another component, it should be
understood that there is no other component in between.
[0015]
The terms used in the present application are merely used to describe particular embodiments
and are not intended to limit the present invention. The singular expression also includes the
plural, unless the context clearly indicates otherwise. In the present application, the terms
"including" or "having" are intended to indicate that the features, numbers, steps, operations,
components, parts or combinations thereof described herein are present. It should be understood
that the presence or addition of one or more other features or numbers, steps, acts, components,
parts or combinations thereof is not precluded in advance.
[0016]
Unless otherwise defined, all terms used herein, including technical and scientific terms, have the
same meaning as commonly understood by one of ordinary skill in the art to which this invention
belongs. have. Terms as defined in commonly used dictionaries should be understood in a sense
consistent with the meaning they have in the context of the relevant art and, unless explicitly
defined in the present application, ideal or overly formalized It is not understood in the sense of
meaning.
[0017]
FIG. 1 is a schematic block diagram illustrating a mobile device according to an embodiment of
the present invention.
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[0018]
Referring to FIG. 1, the mobile device 100 may be connected to an external device (not shown)
using the mobile communication module 120, the sub communication module 130 and the
connector 165.
The external device includes another device (not shown), a mobile phone (not shown), a
smartphone (not shown), a tablet PC (not shown) and a server (not shown).
[0019]
Referring to FIG. 1, the mobile device 100 includes a control unit 110, a mobile communication
module 120, a sub communication module 130, a multimedia module 140, a camera module
150, a GPS module 155, an input / output module 160, a sensor module 170, and a storage unit.
And a power supply unit 180 and a display unit 190. The sub communication module 130
includes at least one of the wireless LAN module 131 and the near field communication module
132, and the multimedia module 140 includes at least one of the broadcast communication
module 141, the audio reproduction module 142, and the video reproduction module 143.
Including. The camera module 150 includes at least one of the first camera 151 and the second
camera 152, and the input / output module 160 includes the button 161, the microphone 162,
the speaker 163, the vibration motor 167, the connector 165, and the keypad 166. At least one
of
[0020]
The control unit 110 stores the CPU 111, the ROM 112 in which a control program for
controlling the mobile device 100 is stored, and a signal or data input from the outside of the
mobile device 100. May be used as a storage area of The CPU 111 may include single core, dual
core, triple core, or quad core. The CPU 111, the ROM 112 and the RAM 113 can be
interconnected through an internal bus.
[0021]
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The control unit 110 includes a mobile communication module 120, a sub communication
module 130, a multimedia module 140, a camera module 150, a GPS module 155, an input /
output module 160, a sensor module 170, a storage unit 175, a power supply unit 180, and a
display unit 190. Control. The control unit 110 may include an audio data signal input unit 300,
an audio signal processing unit 310, a crossover frequency changing unit 900, an audio output
means usage determining unit 1100, and a reproduction frequency band adjustment input unit
111 described below. The audio data signal input unit 300, the audio signal processing unit 310,
the crossover frequency changing unit 900, the audio output means usage determining unit
1100, and the reproduction frequency band adjustment input unit 111 are separately formed,
and the control unit 110 controls them. You can also
[0022]
Under control of the control unit 110, the mobile communication module 120 uses at least one
or more antennas (not shown) to connect the mobile device 100 with an external device through
mobile communication. The mobile communication module 120 can make voice calls, image
calls, etc. with a mobile phone (not shown), a smart phone (not shown), a tablet PC or other
device (not shown) having a telephone number input to the mobile device 100. Send and receive
wireless signals for text messages or multimedia messages.
[0023]
The sub communication module 130 may include at least one of a wireless LAN module 131 and
a near field communication module 132. For example, only the wireless LAN module 131 may be
included, only the near field communication module 132 may be included, or both the wireless
LAN module 131 and the near field communication module 132 may be included.
[0024]
The wireless LAN module 131 can be connected to the Internet at a location where a wireless AP
(not shown) is installed under the control of the control unit 110. The wireless LAN module 131
can support the Wireless LAN Standard (802.11x) of the Institute of Electrical and Electronics
Engineers. The short distance communication module 132 can wirelessly perform short distance
communication between the mobile device 100 and an image forming apparatus (not shown)
under the control of the control unit 110. The short distance communication method can include
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Bluetooth (registered trademark), infrared communication, and the like.
[0025]
The mobile device 100 may include at least one of a mobile communication module 120, a
wireless LAN module 131, and a near field communication module 132 according to
performance. For example, the mobile device 100 may include a combination of the mobile
communication module 120, the wireless LAN module 131, and the near field communication
module 132 according to performance.
[0026]
The multimedia module 140 may include a broadcast communication module 141, an audio
playback module 142 or a video playback module 143. The broadcast communication module
141 transmits a broadcast signal (for example, a TV broadcast signal, a radio broadcast signal or
a data broadcast signal) transmitted from a broadcast station through a broadcast
communication antenna (not shown) under the control of the control unit 110 and broadcast
additional information (for example, , EPS or ESG). The audio playback module 142 can play back
a digital audio file (for example, a file whose file extension is mp3, wma, ogg or wav) stored or
received under the control of the control unit 110. The video playback module 143 may play
back a digital video file (for example, a file whose file extension is mpeg, mpg, mp4, avi, mov, or
mkv) stored or received under the control of the control unit 110. The video playback module
143 can play back digital audio files.
[0027]
The multimedia module 140 may include an audio playback module 142 and a video playback
module 143 except for the broadcast communication module 141. Also, the audio reproduction
module 142 or the video reproduction module 143 of the multimedia module 140 may be
included in the controller 100.
[0028]
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The camera module 150 may include at least one of a first camera 151 and a second camera 152
that capture still images or videos under the control of the control unit 110. In addition, the first
camera 151 or the second camera 152 can include an auxiliary light source (for example, a flash
(not shown)) that provides the amount of light necessary for photographing. The first camera
151 may be disposed on the front of the mobile device 100 and the second camera 152 may be
disposed on the rear of the mobile device 100. In another embodiment, the first camera 151 and
the second camera 152 may be arranged adjacent to each other to capture a three-dimensional
still image or a three-dimensional video.
[0029]
The GPS module 155 receives radio waves from a plurality of GPS satellites (not shown) in the
orbit of the earth, and utilizes the radio wave arrival time from the GPS satellites (not shown) to
the mobile device 100 to transmit The position can be calculated. The position of the mobile
device 100 calculated from the GPS module 155 may be represented by at least one of latitude,
longitude, height, and three-dimensional direction.
[0030]
The input / output module 160 may include at least one of a plurality of buttons 161, a
microphone 162, a speaker 163, an audio output unit 164, a connector 165, a keypad 166, and a
vibration motor 167.
[0031]
The button 161 may be formed on the front, side or rear of the housing of the mobile device
100, and may include at least one of a power / lock button, a volume button, a menu button, a
home button, and a back button. .
[0032]
The microphone 162 receives voice or sound under the control of the control unit 110 and
generates an electrical signal.
The microphone 162 can receive the user's voice for voice call service.
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[0033]
The speaker 163 controls various signals of the mobile communication module 120, the sub
communication module 130, the multimedia module 140 or the camera module 150 under the
control of the control unit 110 (eg, wireless signal, broadcast signal, digital audio file, digital
video file or photo). The sound corresponding to the shooting etc. can be output to the outside of
the mobile device 100.
The speaker 163 may output a sound corresponding to the function performed by the mobile
device 100 (e.g., a button operation sound corresponding to a telephone call or a call connection
sound). The speaker 163 may be formed one or more at an appropriate position or positions of
the housing of the mobile device 100.
[0034]
The audio output unit (Receiver, handset) 164 can reproduce an audio data signal by
communication under the control of the control unit 110 and output the audio data signal to the
outside of the mobile device 100. The audio output means 164 may be formed one or more at an
appropriate position or positions of the mobile device 100 housing.
[0035]
The connector 165 can be used as an interface for connecting the mobile device 100 with an
external device (not shown) or a power source (not shown). The data stored in the storage unit
175 of the mobile device 100 may be transmitted to an external device (not shown) or
transmitted from an external device (not shown) through a wired cable connected to the
connector 165 under the control of the control unit 110. Can be received. Power can be input
from a power source (not shown) through a wired cable connected to the connector 165 and a
battery (not shown) can be charged.
[0036]
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The keypad 166 may receive key input from a user to control the mobile device 100. The keypad
166 may include a physical keypad (not shown) formed on the mobile device 100 or a virtual
keypad (not shown) displayed on the display unit 190. The physical keypad (not shown) formed
on the mobile device 100 can be excluded by the performance or structure of the mobile device
100.
[0037]
The vibration motor 167 can convert an electrical signal into mechanical vibration under the
control of the control unit 110. For example, the mobile device 100 in the vibration mode
operates the vibration motor 167 when a voice call is received from another device (not shown).
The vibrating motor 167 may be formed one or more in the housing of the mobile device 100.
The vibration motor 167 operates in response to the touch operation of the user touching on the
display unit 190 and the continuous movement of the touch on the display unit 190.
[0038]
The sensor module 170 includes at least one sensor that detects the state of the mobile device
100. For example, the sensor module 170 may be a proximity sensor that detects whether the
user approaches the mobile device 100, an illuminance sensor (not shown) that detects the
amount of light around the mobile device 100, or an operation of the mobile device 100 (for
example, A motion sensor (not shown) may be included to detect rotation of the mobile device
100, acceleration or vibration applied to the mobile device 100). The at least one sensor may
detect a state, generate a signal corresponding to the detection, and transmit the signal to the
control unit 110. The sensors of sensor module 170 may be added or deleted depending on the
capabilities of mobile device 100.
[0039]
The storage unit 175 supports the operations of the mobile communication module 120, the sub
communication module 130, the multimedia module 140, the camera module 150, the GPS
module 155, the input / output module 160, the sensor module 170, and the display unit 190
under the control of the control unit 110. Signals or data input and output can be stored. The
storage unit 175 may store a control program and an application for controlling the mobile
device 100 or the control unit 110.
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[0040]
The term "storage unit" includes a storage unit 175, a ROM 112 in the control unit 110, a RAM
113, or a memory card (not shown) (for example, an SD card, a memory stick) attached to the
mobile device 100. The storage can include non-volatile memory, volatile memory, hard disk
drive (HDD) or solid state drive (SSD).
[0041]
The power supply unit 180 may supply power to one or more batteries (not shown) disposed in
the housing of the mobile device 100 under the control of the control unit 110. One or more
batteries (not shown) provide power to the mobile device 100. In addition, the power supply unit
180 may supply the mobile device 100 with power input from an external power source (not
shown) through a wired cable connected to the connector 165.
[0042]
The display unit 190 may display a screen of the mobile device provided by the control of the
control unit 110. The display unit 190 may include a touch screen, but the touch screen may
provide a user with a user interface corresponding to various services (e.g., calling, data
transmission, broadcasting, photographing). The touch screen may transmit an analog signal
corresponding to at least one touch input to the user interface to the control unit 110. The touch
screen can receive at least one touch through the user's body (e.g., a finger including a thumb) or
touchable input means (e.g., a stylus). Also, the touch screen may receive the continuous
movement of one touch among the at least one touch. The touch screen may transmit an analog
signal corresponding to the continuous movement of the input touch to the control unit 110.
[0043]
In the present invention, the touch is not limited to contact between the touch screen and the
user's body or touchable input means, but is non-contact (eg, detectable distance between the
touch screen and the user's body or touchable input means) May include the predetermined
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interval or less). The detectable distance of the touch screen may be changed according to the
performance or structure of the mobile device 100. The touch screen may be implemented, for
example, in a resistive manner, a capacitive manner, an infrared manner, or an ultrasonic
manner.
[0044]
The controller 110 may convert an analog signal received from the touch screen into a digital
signal (e.g., X and Y coordinates). The control unit 110 can control the display unit 190 using a
digital signal. For example, the control unit 110 may cause the shortcut icon displayed on the
display unit 190 to be selected or execute the shortcut icon in response to the touch.
[0045]
FIG. 2 is a front view of a mobile device according to an embodiment of the present invention.
[0046]
Referring to FIG. 2, the mobile device 100 can include at least one audio output means 164.
The audio output unit 164 can provide a user with a reception sound by reproducing the audio
data signal and outputting the signal outside the mobile device 100. In this case, since the audio
output unit 164 may be plural, the first audio output unit 200, the second audio output unit 202,
the third audio output unit, and the like can be included in the mobile device 100. However,
although FIG. 2 shows an example in which two audio output means 164 are formed by the first
audio output means 200 and the second audio output means 202, the present invention is not
limited to this. And, the audio output means may be formed of various receivers such as a
dynamic receiver and a balanced armature. In this case, as the receiver, various types of existing
receivers can be used, and the type can be easily understood by those skilled in the art to the
present invention. In this case, the dynamic receiver means a receiver which reproduces an audio
data signal by supplying a current to a coil attached to a diaphragm and vibrating the diaphragm
using a permanent magnet. The dynamic receiver is a type of transducer in which a diaphragm
connected to a central coil moving up and down in a magnetic field generated by a permanent
magnet is used to convert an electrical signal into an acoustic signal by the vibration of the
diaphragm. . The above-mentioned dynamic receiver has a characteristic of effectively
reproducing the low frequency and medium frequency reproduction frequency bands. The
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balanced armature is a type of transducer in which the receiving sound is reproduced by
vibrating the interlocked diaphragm by moving an electric signal into the armature wound by the
coil and moving between the permanent magnets. . The balanced armature has a characteristic of
effectively reproducing the high frequency reproduction frequency band. Therefore, according to
the embodiment of the present invention, the dynamic receiver for reproducing the bass band
and the balanced armature for reproducing the treble band are simultaneously reproduced to
reproduce in the reproduction frequency bands of both the bass band and the high band. This
has the advantage of being able to effectively provide the user with listening sound in all
reproduction frequency bands.
[0047]
FIG. 3 is an internal block diagram of a mobile device according to an embodiment of the present
invention.
[0048]
Referring to FIG. 3, the mobile device according to the first embodiment of the present invention
may include an audio data signal input unit 300, an audio signal processing unit 310, at least one
audio output unit 200, and a balance armature 202.
The at least one audio output means may be formed by various receivers such as a dynamic
receiver and a balanced armature. Therefore, according to an embodiment of the present
invention, the audio data signal is output through at least one audio output means 200 and a
balanced armature 202 which is one of the types of audio output means, and a plurality of audio
data signals are output. The audio data signal can be output by the output means. In this case,
the balance armature 202 may be located near the at least one audio output means 200. And, the
at least one audio output unit 200 may be plural, and includes a first audio output unit, a second
audio output unit, a third audio output unit, and an N-th audio output unit. Although possible, the
following description will be made based on the first audio output means. The audio data signal
input unit 300 and the audio signal processing unit 310 may be included in the control unit 110
or may be separately formed and controlled by the control unit 110.
[0049]
The audio data signal input unit 300 is included in the mobile device 100, is controlled by the
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control unit 110, and receives an audio data signal. The audio data signal input unit may include
a mobile communication data reception unit 302. In this case, the mobile communication data
receiving unit 312 can receive the audio data signal using the voice communication service of the
mobile communication network. Then, the audio data signal is generated based on an audio
frequency band. The audio data signal refers to an electrical signal that is reproduced by the
audio output unit of the mobile device 100 and is output to the outside of the mobile device 100
and is provided to the user. For example, the audio data signal may be an electrical signal
including information on voice and sound of another user of the external mobile device received
through the mobile communication data receiving unit 302 using the communication modules
120 to 130 of the mobile device 100. Can. In this case, the voice or sound signal of another user
of the external mobile device is converted into an electrical signal inside the external mobile
device, and the converted electrical signal is mobile through the mobile communication data
receiving unit 302 using the communication module. The device 100 receives it. Thus, the
electrical signal received by the user's mobile device 100 can be an audio data signal that is
output to the outside of the mobile device and provided to the user.
[0050]
The first audio output unit 200 and the balance armature 202 receive the audio data signal from
the audio signal processing unit 310 described below and reproduce it, thereby outputting the
audio data signal to the outside of the mobile device for the user To provide. The first audio
output means 200 can reproduce the first reproduction frequency band of the audio data signal,
and the balance armature 202 reproduces the second reproduction frequency band of the audio
data signal. Can. The first reproduction frequency band may be a band different from the second
reproduction frequency band, but overlapping bands may also be present. FIG. 4 is a diagram
showing a reproduction frequency band of a mobile device including one audio output means
according to an embodiment of the present invention, and FIG. 5 is a reproduction of a mobile
device including a balanced armature according to an embodiment of the present invention It is a
figure which shows a frequency band. Referring to FIG. 4A, a mobile device 400 including one
audio output means 402 is shown, but in the mobile device 400 of FIG. 4A, one audio output
means is played. Referring to FIG. 4B, the frequency spectrum 412 of the audio data signal
reproduced by one audio output unit 402 is shown. The X-axis of the graphic of FIG. 4B is
frequency, and the Y-axis is Sound Pressure Level (SPL). Therefore, the graphic of FIG. 4B means
a spectrum 412 in which sound pressure according to the frequency of the one audio output
means 402 is indicated. Therefore, the band which can be reproduced by the one audio output
means 402 is the same as the reproduction frequency band 420 shown in FIG. 4B. Referring now
to FIG. 5A, a mobile device 100 is shown that includes a balanced armature that is a first
embodiment of the present invention. Referring to FIG. 5B, the frequency spectrum 210, 212 of
the audio data signal reproduced by the first audio output means and the balance armature 200,
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202 is shown. The x-axis of the graphic of FIG. 5B is frequency and the y-axis is sound pressure.
Thus, the graphic of FIG. 5B means the spectrum 210, 212 in which the sound pressure
according to the frequency of the first audio output means and the balanced armature is shown.
FIG. 5B shows a first reproduction frequency band 510 reproduced by the first audio output
means and a second reproduction frequency band 512 reproduced by the balance armature.
Thus, in the mobile device according to one embodiment of the present invention, the frequency
spectrum 210 of the first audio output means 200 and the frequency spectrum 212 of the
balanced armature 202 are combined to generate the frequency spectrum 214. Thus, according
to the combined frequency spectrum 214, the reproduction frequency band 500 according to an
embodiment of the present invention is wider than the reproduction frequency band 420 of the
mobile device including one audio output means of FIG. 4B. Therefore, according to one
embodiment of the present invention, there is an advantage that the reproduction frequency
band in which the audio data signal is reproduced is widened by using a plurality of audio output
means.
[0051]
The audio signal processing unit 310 is included in the mobile device 100, is controlled by the
control unit 110, and uses at least one filter to control the first reproduction frequency band of
the first audio output unit 200 and the balance armature 202. Adjust the second reproduction
frequency band. In this case, the at least one filter may perform filtering by frequency. FIG. 6 is a
diagram showing the contents of the audio signal processing unit adjusting the first reproduction
frequency band of the first audio output means according to an embodiment of the present
invention. FIG. 7 is a diagram showing the contents of the audio signal processing unit according
to an embodiment of the present invention adjusting the second reproduction frequency band of
the balanced armature. First, referring to FIG. 6, in FIG. 6A, a spectrum 610 showing sound
pressure (SPL) according to the frequency of the audio data signal of the first audio output
means 200 is shown. In FIG. 6B, the frequency response graphic for the low pass filter 620 used
in the audio signal processing unit 310 is shown. In this case, the audio signal processing unit
310 cuts the high frequency band reproduced by the first audio output means 200 using the low
pass filter shown in FIG. Thus, the first reproduction frequency band of the first audio output
means can be adjusted. Thus, FIG. 6C shows a spectrum 630 showing sound pressure by
frequency for the audio data signal filtered by low pass filter 620. In this case, comparing the
reproduction frequency band 640 of FIG. 6A before filtering with the reproduction frequency
band 650 of FIG. 6C after filtering, it is understood that the high band is cut and the low band is
stored. Next, referring to FIG. 7, in FIG. 7A, a spectrum 710 showing sound pressure (SPL)
according to the frequency of the audio data signal of the balanced armature 202 is shown. In
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FIG. 7B, the frequency response graphic for the high pass filter 720 used in the audio signal
processing unit 310 is shown. In this case, as shown in FIG. 7B, the audio signal processing unit
310 cuts the low frequency band reproduced by the balanced armature 202 using a high-pass
filter and performs filtering for storing the high frequency band to perform balance. The second
reproduction frequency band of the armature can be adjusted.
Thus, FIG. 7C shows a spectrum 730 indicating the sound pressure by frequency for the audio
data signal filtered by the high-pass filter 720. In this case, comparing the reproduction
frequency band 740 of FIG. 7A before filtering and the reproduction frequency band 750 of FIG.
7C after filtering, it can be seen that the bass band is cut and the treble band is stored. Finally,
referring to FIG. 8, FIG. 8 shows the frequency spectrum 630 of the first audio output means for
reproducing the first reproduction frequency band whose reproduction frequency band is
adjusted by the audio signal processing unit and the second reproduction frequency. A frequency
spectrum 800 is shown in which the frequency spectrum 730 of the balanced armature that
reproduces the band is combined. Therefore, when an audio data signal is reproduced by the first
audio output means and the balance armature according to an embodiment of the present
invention, the audio data signal may be generated without dip in a wide reproduction frequency
band as shown in FIG. Can be played. Therefore, the mobile device including the balanced
armature according to one embodiment of the present invention can adjust the reproduction
frequency band of each of the plurality of audio output means to reproduce the audio data signal
through the audio signal processing unit. There is.
[0052]
FIG. 9 is an internal block diagram of a mobile device according to another embodiment of the
present invention.
[0053]
Referring to FIG. 9, the mobile device according to another embodiment of the present invention
may have a crossover frequency other than the audio data signal input unit 300, the audio signal
processing unit 310, the at least one audio output unit 200, and the balance armature 202. The
change unit 900 may further be included.
The crossover frequency changing unit 900 may be included in the control unit 110 or may be
separately formed and controlled by the control unit 110. Here, the audio data signal input unit
300, the audio signal processing unit 310, the audio output unit 200, and the balance armature
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202 are the same as the descriptions in FIG. 3 to FIG.
[0054]
The crossover frequency changing unit 900 is used to adjust the frequency response of the first
filter used to adjust the reproduction frequency band of the first audio output means in the audio
signal processing unit, and to adjust the reproduction frequency band of the balanced armature.
Change the crossover frequency at which the frequency response of the second filter is crossed.
FIG. 10 is a diagram showing crossover frequency according to an embodiment of the present
invention. In FIG. 10A, the frequency response 1010 of the first filter used for adjusting the
reproduction frequency band of the first audio output means in the audio signal processing unit,
and the frequency response 1010 for adjusting the reproduction frequency band of the balance
armature A two filter frequency response 1020 is shown. The frequency at the intersection of the
frequency response 1010 of the first filter and the frequency response 1020 of the second filter
is the crossover frequency 1030. The crossover frequency changing unit 900 may change the
crossover frequency to increase or decrease the crossover frequency. FIG. 10B shows an example
in which the crossover frequency is increased. As the crossover frequency 1032 is increased, the
frequency response 1012 of the first filter used for adjusting the reproduction frequency band of
the first audio output means becomes wider in application range as compared with FIG. 10A and
vice versa. The frequency response 1022 of the second filter used for adjusting the reproduction
frequency band of the balanced armature is narrower in application range than that of FIG. 10A.
Therefore, if the crossover frequency is increased, for example, in the case of FIG. 10B, the
application range of the low pass filter as the first filter is broadened, and conversely, the high
pass filter as the second filter is As the application range becomes narrow and the application of
the low-pass filter becomes relatively large and the bass band is emphasized and filtered
compared to FIG. 10A before the adjustment of the crossover frequency, the first audio output
The bass band can be emphasized and reproduced by means and a balance armature, and an
audio data signal can be outputted to the user. On the contrary, FIG. 10C shows an example in
which the crossover frequency is reduced. As the crossover frequency 1034 decreases, the
frequency response 1014 of the first filter used to adjust the reproduction frequency band of the
first audio output means becomes narrower in application range compared with FIG. 10A and
vice versa The frequency response 1024 of the second filter used to adjust the reproduction
frequency band of the balanced armature is more flexible than in FIG. 10A.
Therefore, if the crossover frequency is to be reduced, for example, in the case of FIG. 10C, the
application range of the low pass filter which is the first filter is narrowed, and conversely, the
high pass filter which is the second filter is Since the application range becomes wider, the
application of the high-pass filter becomes relatively larger than that in FIG. 10A before the
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adjustment of the crossover frequency, and the high-pass band is emphasized and filtered.
Therefore, the treble band is emphasized and reproduced by the first audio output means and the
balance armature, and an audio data signal can be output to the user. Therefore, according to
another embodiment of the present invention, there is an advantage that the tone range band
emphasized through the change of the crossover frequency can be changed to reproduce the
receiver. And, the change of the crossover frequency may be determined by the crossover
frequency changing unit 900, or the input from the user may be received to determine the
change of the crossover frequency.
[0055]
FIG. 11 is an internal block diagram of a mobile device according to another embodiment of the
present invention.
[0056]
Referring to FIG. 11, the mobile device according to another embodiment of the present
invention may output audio in addition to the audio data signal input unit 300, the audio signal
processing unit 310, the at least one audio output unit 200, and the balanced armature 202. It
may further include means usage determining unit 1100 and a reproduction frequency band
adjustment input unit 1110.
The audio output unit use determination unit 1100 and the reproduction frequency band
adjustment input unit 1110 may be included in the control unit 110, may be separately formed,
and may be controlled by the control unit 110. Here, the audio data signal input unit 300, the
audio signal processing unit 310, the at least one audio output unit 200, and the balance
armature 202 are the same as the descriptions in FIG. 3 to FIG.
[0057]
The audio output means use determining unit 1100 determines whether to use the first audio
output means and the balanced armature. The audio output means usage determining unit 1100
can determine whether to use each of the first audio output means and the balanced armature.
Therefore, when the audio output means usage judging unit 1100 decides to use the first audio
output means and decides not to use the balanced armature, the audio data signal is reproduced
only by the first audio output means. It can be provided to the user. The determination of use for
09-05-2019
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each audio output means may be determined by the audio output means usage determination
unit 1100, but may also be determined whether to receive an input from the user and use it.
[0058]
The reproduction frequency band adjustment input unit 1110 receives an input for adjusting the
first reproduction frequency band of the first audio output means and the second reproduction
frequency band of the balance armature. An input for adjusting the first reproduction frequency
band of the first audio output means and the second reproduction frequency band of the balance
armature may be received from the user through the reproduction frequency band adjustment
input unit 1110. In this case, the reproduction frequency band adjustment input unit 1110 may
use the button 161 included in the input module 160 of the mobile device 100, the keypad 166,
the touch screen, or the like to transmit the above-mentioned first audio output unit An input
may be received to adjust the one reproduction frequency band and the second reproduction
frequency band of the balanced armature.
[0059]
A mobile device including a balanced armature according to another embodiment of the present
invention determines whether a wideband voice call service supporting a wideband playback
frequency band is available in the mobile device or not. Can be further included.
[0060]
A wideband determination unit determines whether a wideband voice call service supporting a
wideband reproduction frequency band is available in the mobile device.
The wide band reproduction frequency band has an audio data signal reproduction frequency
band wider than the narrow band reproduction frequency band. The wide band reproduction
frequency band may be 50 to 7000 Hz, and the narrow band reproduction frequency band may
be 300 to 3400 Hz. The wide band reproduction frequency band may communicate with a base
station or determine a carrier by using the communication modules 120 to 132 or the GPS
module 155 included in the mobile device, for the audio data signal. It can be determined
whether the audio channel information is in the wide band reproduction frequency band.
09-05-2019
21
[0061]
The control unit 110 controls the wide band determination unit, and from the wide band
determination unit, information indicating that the wide band voice communication service
supporting the wide band reproduction frequency band is available in the mobile device is
received. I can receive it. For example, the first audio output means for reproducing the first
reproduction frequency band is a dynamic receiver for reproducing the bass band, and the
balanced armature for reproducing the second reproduction frequency band reproduces the
treble band. Explain. Thus, the control unit 110 can control the audio output means usage
determining unit 1100 described with reference to FIG. 11 to perform control using both the first
audio output means and the balance armature. This is because the wideband reproduction
frequency band supports reproduction not only in the bass band but also in the treble band, so it
is necessary to use both of the first audio output means and the balanced armature.
[0062]
The control unit 110 controls the audio signal processing unit 310 to adjust the first
reproduction frequency band using a low pass filter for the dynamic receiver which is the first
audio output unit, For balanced armatures, a high pass filter can be used to adjust the second
playback frequency band. In this case, FIG. 12A shows a spectrum 1200 showing sound pressure
by frequency for the first audio output means and a spectrum 1202 showing sound pressure by
frequency for the balanced armature. A frequency response 1210 for the low pass filter used in
the first audio output means and a frequency response 1220 for the high pass filter used in the
balanced armature are shown in FIG. 12B. Here, the frequency at the intersection of the
frequency response 1210 for the low pass filter used in the first audio output means and the
frequency response 1220 for the high pass filter used in the balanced armature is shown as a
crossover frequency 1230. It is done. Then, a spectrum 1240 indicating the sound pressure by
the frequency for the adjusted first reproduction frequency band, a spectrum 1250 indicating the
sound pressure by the frequency for the adjusted second reproduction frequency band, and the
first reproduction frequency band and the above A spectrum 1260 is shown in FIG. 12C showing
the sound pressure due to the combined frequency of the second reproduction frequency band.
Therefore, referring to FIGS. 12A to 12C, the control unit 110 controls the audio signal
processing unit 310 when the wideband voice call service supporting the wideband reproduction
frequency band is available to the mobile device. Then, by adjusting the reproduction frequency
band to the first audio output means and the balance armature, the audio data signal is
reproduced to both the low band and the high band as shown in FIG. 12C. Can be provided to the
user.
09-05-2019
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[0063]
However, the control unit 110 controls the wideband determination unit to receive, from the
wideband determination unit, information indicating that the wideband voice communication
service supporting the wideband reproduction frequency band can not be used by the mobile
device. There is also something to do. In this case, the control unit 110 can control to output the
entire reproduction frequency band of the audio data signal received by any one of the first
audio output means or the balance armature. For example, in the above case, the control unit
110 can use the first audio output unit from the audio output unit usage determination unit
1100 and can receive information indicating that the balance armature is not used. This is
because, in an area where the wide band reproduction frequency band is not supported, it
corresponds to the narrow band reproduction frequency band, and the high frequency band is
relatively narrowly supported in the narrow band reproduction frequency band. This is because
the control unit 110 can transmit information indicating that the balance armature, which is the
balance armature corresponding to the above, is not used.
[0064]
However, even when the control unit 110 controls the wideband determination unit to receive,
from the wideband determination unit, information indicating that the mobile device is located in
an area where the wideband reproduction frequency band is not supported, Information
indicating that the balance armature is to be used may be received from the use determining unit
1100. This is because, even when the mobile device is in the narrow band reproduction
frequency band, the high band is supported in a certain area. In this case, the control unit 110
can control the crossover frequency changing unit 900 so as to reduce the crossover frequency.
Decreasing the crossover frequency relatively improves the reproduction for the treble band.
This is because the narrow band reproduction frequency band has narrow support for the high
frequency band. Therefore, the control unit 110 can reduce the crossover frequency to improve
the reproduction with respect to the high sound range. FIG. 13 shows the case where the
dynamic receiver and the balance armature are simultaneously used in the narrow band
reproduction frequency band. Referring to FIG. 13, a spectrum 1300 showing sound pressure by
frequency for the first audio output means and a spectrum 1302 showing sound pressure by
frequency for the balanced armature are shown in FIG. 13A. A frequency response 1310 for the
low pass filter used in the first audio output means and a frequency response 1320 for the high
pass filter used in the balanced armature are shown in FIG. 13B. Here, the frequency at the
intersection of the frequency response 1310 for the low pass filter used in the first audio output
means and the frequency response 1320 for the high pass filter used in the balanced armature is
09-05-2019
23
indicated as a crossover frequency 1330. It is done. In this case, the crossover frequency 1330 is
reduced compared to the crossover frequency 1230 of FIG. 12B. This is a result of improving the
reproduction with respect to the high frequency band by the control unit 110 controlling the
crossover frequency changing unit 900 to reduce the crossover frequency. Then, a spectrum
1340 indicating the sound pressure by the frequency for the adjusted first reproduction
frequency band, a spectrum 1350 indicating the sound pressure by the frequency for the
adjusted second reproduction frequency band, and the first reproduction frequency band and the
above A spectrum 1360 is shown in FIG. 13C showing the sound pressure due to the combined
frequency of the second reproduction frequency band.
Therefore, as shown in FIG. 12C, according to another embodiment of the present invention, even
when the mobile device is located in the narrow band reproduction area, not only the dynamic
receiver but also the balance armature is reproduced, and the high band is By filtering so as to be
sufficiently reproduced, reproduction of an audio data signal richer in the high-frequency band
can be output as compared to the sound pressure spectrum 1370 according to a frequency at
which only one dynamic receiver is reproduced.
[0065]
The mobile device according to another embodiment of the present invention may further
include a surrounding environment stuttering judging unit that determines stuttering with
respect to the surrounding environment of the mobile device.
[0066]
The surrounding environment stuttering determination unit determines stuttering with respect to
the surrounding environment of the mobile device.
The surrounding environment stuttering determination unit may determine stuttering of the
surrounding environment using the microphone 162 or the like included in the sensor module
170 or the input / output module 160 of the mobile device 100. Then, the surrounding
environment roaring judgment unit can judge whether the roaring noise belongs to the high
sound range or the low sound range. Therefore, when the ambient environment noise of the
mobile device is equal to or greater than a predetermined level determined by the ambient
environment noise assessment unit, the control unit 110 controls the crossover frequency
change unit 900 to change the crossover frequency. it can. For example, the case where a
dynamic receiver and a balance armature are used as the first audio output means will be
09-05-2019
24
described. In this case, when it is determined that the roaring noise belongs to the low frequency
band by the surrounding environment roaring sound judging unit, the control unit 110 reduces
the crossover frequency, and the reproduction to the high sound frequency band is effective. The
balanced armature can be relatively fully regenerated. On the other hand, when it is determined
that the roaring noise belongs to the treble band by the surrounding environment roaring
judgment unit, the control unit 110 increases the crossover frequency to effectively reproduce
the bass band. The dynamic receiver, which is the first audio output means, can also be played
relatively well. At the same time, when the noise is in the low frequency band, the control unit
110 controls the audio signal processing unit 310 to band the first filter used in the dynamic
receiver as the first audio output means. It can also be applied as a pass filter. Therefore, as
shown in FIG. 14, according to another embodiment of the present invention, a band pass filter
having a frequency response 1400 for cutting the lowest band is used in the first audio output
means, the dynamic receiver. By using a high pass filter in the balanced armature, the audio data
signal can be effectively reproduced from the vicinity where the whistle of the bass band occurs.
[0067]
The mobile device according to another embodiment of the present invention may further
include a region determining unit determining a country or region in which the mobile device is
located.
[0068]
The area determination unit determines the country in which the mobile device is located.
The region determination unit analyzes information on a base station or a carrier connected to
the mobile device using the communication modules 120 to 132 of the mobile device to
determine a country or a region where the mobile device is located. can do.
[0069]
In this case, the control unit 110 can change the crossover frequency by receiving the
information on the country or region where the mobile device 100 is located from the region
determination unit and controlling the crossover frequency change unit. For example, the case
where a dynamic receiver and a balance armature are used as the first audio output means will
be described. In this case, when the control unit 110 receives, from the area determination unit,
09-05-2019
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information indicating that the mobile device is located in the rice / maroon area, the control unit
110 determines that the user of the rice / maroon area is audio data of a high sound range
Depending on the predetermined criteria of preferring the signal, the crossover frequency can be
reduced to allow the balance armature to be reproduced more fully. On the contrary, when the
control unit 110 receives the information that the mobile device is located in the European
region from the region determination unit, the control unit 110 instructs the user in the
European region to prefer the audio data signal in the bass band. According to the predetermined
criteria, the crossover frequency can be increased to more fully reproduce the first audio output
means, the dynamic receiver.
[0070]
According to another aspect of the present invention, a mobile apparatus including a balanced
armature can change the crossover frequency in response to an input for changing the crossover
frequency from the reproduction frequency band adjustment input unit.
[0071]
As described with reference to FIG. 11, the reproduction frequency band adjustment input unit
has an input for adjusting the first reproduction frequency band of the first audio output means
and the second reproduction frequency band of the balance armature. receive.
In this case, the frequency response of the first filter used for adjusting the reproduction
frequency band of the first audio output means from the reproduction frequency band
adjustment input unit and the reproduction frequency band of the balance armature are adjusted.
An adjustment may be input to change the crossover frequency at which the frequency responses
of the two filters intersect. Then, the reproduction frequency band adjustment input unit may
receive an input for adjusting the crossover frequency from the user using the touch screen. For
example, the case where a dynamic receiver and a balance armature are used as the first audio
output means will be described.
[0072]
15A and B show the process in which the reproduction frequency band adjustment is performed.
Referring to FIG. 15A, when the user desires a soft voice from the touch screen 190 included in
the mobile device, the left side 1510 may receive an input of a touch toward the right side 1520
09-05-2019
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when a clear voice is desired. it can. When the control unit 110 detects the touch received as
described above and the left touch 1510 corresponding to the soft voice is detected, the control
unit 110 increases the crossover frequency 1530 as shown in FIG. 15B (1545). By expanding the
frequency response 1540 of the low pass filter corresponding to the low frequency band, the
dynamic receiver corresponding to the first audio output means can be reproduced sufficiently.
On the contrary, when the right touch 1520 corresponding to the clear voice is detected, the
control unit 110 decreases the crossover frequency 1530 as shown in FIG. 15B (1555), and the
high pass filter corresponding to the high range band By expanding the frequency response
1550, the balanced armature can be reproduced sufficiently. Therefore, according to another
embodiment of the present invention, it is possible to receive an input for a desired voice from a
user and reproduce a user's desired audio data signal using a plurality of audio output means.
For example, when the user uses a mobile device to make a call, the user can listen to the desired
audio data signal according to the tone color of the other party, and the user can use the tone
color even if the call is difficult. It can also be adjusted to hear the desired audio data signal.
[0073]
FIG. 16 is a flowchart of a control method of the mobile device according to the first embodiment
of the present invention.
[0074]
Referring to FIG. 16, first, the mobile device receives at least one audio output means of the
mobile device and an audio data signal to be reproduced by the balance armature (step 1600).
[0075]
Next, using the at least one filter to reproduce the first reproduction frequency band of the audio
data signal of the mobile device, the first reproduction frequency band of the first audio output
means and the audio data signal of the mobile device The second reproduction frequency band of
the balanced armature that reproduces the second reproduction frequency band is adjusted (step
1610).
In this case, the at least one filter may perform filtering by frequency.
For example, a low pass filter is used to adjust the playback frequency band for the first playback
band of the first audio output means, and a high pass filter is used for the second playback band
09-05-2019
27
of the balanced armature. The reproduction frequency band can be adjusted. In this case, the first
audio output means for reproducing the first reproduction frequency band is a dynamic receiver
for reproducing the bass band, and the balanced armature for reproducing the second
reproduction frequency band is the high band Can be a balanced armature to play
[0076]
Next, the first audio output means is reproduced in the adjusted first reproduction frequency
band, and the balanced armature is reproduced in the adjusted second reproduction frequency
band, to the outside of the mobile device. The audio data signal is output (step 1620). That is, by
reproducing the acoustic signal by reproducing the first audio output means in the adjusted first
reproduction frequency band and reproducing the balanced armature in the adjusted second
reproduction frequency band, The audio data signal is output to the user outside the mobile
device.
[0077]
FIG. 17 is a flowchart of a control method of a mobile device according to another embodiment
of the present invention.
[0078]
Referring to FIG. 17, first, the mobile device receives at least one audio output means of the
mobile device and an audio data signal to be reproduced by the balanced armature (step 1700).
[0079]
Next, a crossover is made by crossing the frequency response of the first filter used for adjusting
the reproduction frequency band of the first audio output means and the frequency response of
the second filter used for adjusting the reproduction frequency band of the balance armature.
The frequency is changed (step 1710).
The crossover frequency is a cross between the frequency response of the first filter used for
adjusting the reproduction frequency band of the first audio output means and the frequency
response of the second filter used for adjusting the reproduction frequency band of the balance
armature. Frequency.
09-05-2019
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Therefore, changing the crossover frequency causes the frequency response of the first filter and
the frequency response of the second filter to change.
[0080]
Next, using the at least one filter to reproduce the first reproduction frequency band of the audio
data signal of the mobile device, the first reproduction frequency band of the first audio output
means and the audio data signal of the mobile device And the second reproduction frequency
band of the balanced armature that reproduces the second reproduction frequency band (step
1720). The first reproduction frequency band of the first audio output means is adjusted using
the first filter changed in step 1710, and the second reproduction of the balance armature is
performed using the second filter changed. The frequency band can be adjusted. In this case, the
first audio output means for reproducing the first reproduction frequency band is a dynamic
receiver for reproducing the bass band, and the audio output means for reproducing the second
reproduction frequency band is for reproducing the treble band Can be a balanced armature.
[0081]
Next, the first audio output means is reproduced in the adjusted first reproduction frequency
band, and the balanced armature is reproduced in the adjusted second reproduction frequency
band, to the outside of the mobile device. The audio data signal is output (step 1730). That is, the
mobile device is configured to reproduce the first audio output means in the adjusted first
reproduction frequency band, and reproduce the balance armature in the adjusted second
reproduction frequency band to reproduce the acoustic signal. The audio data signal is output to
the outside of the device and provided to the user.
[0082]
FIG. 18 is a flowchart of a control method of a mobile device according to another embodiment
of the present invention.
[0083]
Referring to FIG. 18, first, at least one audio output means of the mobile device and an audio data
signal to be reproduced by the balanced armature are received (step 1800).
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29
[0084]
Next, it is determined whether to use the first audio output means and the balance armature
(step 1810).
That is, it can be determined whether to use each of the first audio output means and the balance
armature.
For example, if it is decided to use the first audio output means and decide not to use the
balanced armature, an audio data signal can be reproduced and provided to the user only at the
first audio output means. . In this case, the first audio output means for reproducing the first
reproduction frequency band is a dynamic receiver for reproducing the bass band, and the
balanced armature for reproducing the second reproduction frequency band reproduces the
treble band. It may be a balanced armature.
[0085]
Next, the playback frequency band is adjusted using at least one filter for each audio output
means determined to be used (step 1820). In this case, the at least one filter may perform
filtering by frequency.
[0086]
Next, each audio output means determined to be used in the adjusted reproduction frequency
band is reproduced to output the audio data signal to the outside of the mobile device (step
1830). That is, the audio data signal is output to the outside of the mobile device and provided to
the user by reproducing the audio signal by reproducing each audio output means determined to
be used in the adjusted reproduction frequency band.
[0087]
FIG. 19 is a flowchart of a control method of a mobile device according to another embodiment
09-05-2019
30
of the present invention.
[0088]
Referring to FIG. 19, first, at least one audio output means of the mobile device and an audio data
signal to be reproduced by the balanced armature are received (step 1900).
[0089]
Next, an input for adjusting the first reproduction frequency band of the first audio output means
and the second reproduction frequency band of the balance armature is received (step 1910).
In this case, it is possible to receive an input from the user for adjusting the first reproduction
frequency band of the first audio output means and the second reproduction frequency band of
the balanced armature.
In this case, the first audio output means for reproducing the first reproduction frequency band
is a dynamic receiver for reproducing the bass band, and the balanced armature for reproducing
the second reproduction frequency band reproduces the treble band. Can be a balanced
armature.
[0090]
Next, using the at least one filter to reproduce the first reproduction frequency band of the audio
data signal of the mobile device, the first reproduction frequency band of the first audio output
means and the audio data signal of the mobile device The second reproduction frequency band of
the balanced armature for reproducing the second reproduction frequency band is adjusted at
each reproduction frequency band received in step 1910 (step 1920). In this case, the at least
one filter may perform filtering by frequency. For example, a low pass filter is used to adjust the
playback frequency band for the first playback band of the first audio output means, and a high
pass filter is used for the second playback band of the balanced armature. The frequency band
can be adjusted.
[0091]
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31
Next, the first audio output means is reproduced in the adjusted first reproduction frequency
band, and the balanced armature is reproduced in the adjusted second reproduction frequency
band, to the outside of the mobile device. The audio data signal is output (step 1930). That is, the
mobile device is configured to reproduce the first audio output means in the adjusted first
reproduction frequency band, and reproduce the balance armature in the adjusted second
reproduction frequency band to reproduce the acoustic signal. The audio data signal is output to
the outside of the device and provided to the user.
[0092]
FIG. 20 is a flowchart for a control method of another embodiment mobile device of the present
invention.
[0093]
Referring to FIG. 20, first, at least one audio output means of the mobile device and an input of
an audio data signal reproduced by the balance armature are received (step 2000).
[0094]
Next, the control unit 110 determines whether a wideband voice call service supporting a
wideband reproduction frequency band is available in the mobile device (step 2002).
In this case, the wide band reproduction frequency band has an audio data signal reproduction
frequency band wider than the narrow band reproduction frequency band.
Then, the control unit 110 communicates with the base station or determines the carrier using
the communication module or the GPS module included in the mobile device, and the voice
channel information for the audio data signal is reproduced in wide band by judging the carrier.
It can be determined whether it is a frequency band.
[0095]
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32
Next, the control unit 110 can reproduce the audio data signal through both the audio output
means and the balanced armature, if a wideband voice call service is available on the mobile
device (step 2004). For example, the first audio output means for reproducing the first
reproduction frequency band is a dynamic receiver for reproducing the bass band, and the
balanced armature for reproducing the second reproduction frequency band reproduces the
treble band. Explain the case. In the above case, if the wideband voice call service is available,
playback is supported not only for the bass frequency band but also for the treble frequency
band. Therefore, the control unit 110 can reproduce the audio data signal in both the low
frequency band and the high frequency band by reproducing the audio data signal through both
the audio output means and the balanced armature.
[0096]
However, the control unit 110 may reproduce the audio data signal through any one of the audio
output means and the balance armature when the wideband voice call service is not available in
the mobile device (step 2006). ). When the wide-band voice call service is not available, playback
is not supported for both the low frequency band and the high frequency band, so audio data
may be transmitted through any one of the audio output means and the balance armature. The
signal can be played back.
[0097]
It is understood that embodiments of the present invention can be realized in the form of
hardware, software, or a combination of hardware and software. Any such software, whether or
not removable or re-recordable, for example, volatile or non-volatile storage such as a storage
device such as a ROM or, for example, RAM, memory Memory, such as a chip, device or
integrated circuit, or optically or magnetically recordable as well as machine-readable (for
example, computer) storage, such as, for example, CD, DVD, magnetic disk or magnetic tape It
can be a medium. In addition, an embodiment of the present invention may be embodied by a
computer or a portable terminal including a control unit and a memory, and the memory is a
machine suitable for storing a program including an instruction embodying the embodiment of
the present invention. It can be seen that it is an example of a storage medium that can be read
by Therefore, the present invention includes a program including code for embodying the device
or method described in any claim of the present specification, and a storage medium readable by
a machine (such as a computer) storing such a program. Also, such programs may be
electronically transported through any medium, such as communication signals conveyed
through wired or wireless connections, and the invention suitably includes equivalent.
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[0098]
Also, the mobile device can receive and store the program from a program providing device
connected by wire or wirelessly. The program providing apparatus includes a program including
an instruction for performing the embodiment of the present invention, a memory for storing
information and the like necessary for the embodiment of the present invention, and wired or
wireless communication with the mobile device. The communication unit may include a
communication unit to perform, and a control unit to transmit the corresponding program to the
transmission / reception apparatus upon request of the mobile apparatus or automatically.
[0099]
110 control unit 120 mobile communication module 130 sub communication module 140
multimedia module 150 camera module 155 GPS module 160 input / output module 170 sensor
module 175 storage unit 180 power supply unit 190 display unit
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