JP2002196765

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DESCRIPTION JP2002196765
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
notification device, a musical instrument, and a sounding device for a vehicle.
[0002]
2. Description of the Related Art In recent years, noise has become an important issue in
preserving the living environment. Noise is said to be sensory pollution because it is dominated
by psychological and mental effects, and it accounts for a large proportion of the number of
complaints of various pollution. In recent years, the sources have also diversified from traffic
noise to nearby noise such as pianos and pets. Under such a background, in the transportation
field, development of electric cars with low noise level is underway, and in the music field, it has
mute performance function (headphone, performance function using electronic sound source)
Pianos are widely used, and this is creating a quiet environment.
[0003]
However, in the above-mentioned electric car, a so-called sound masking effect that the running
noise is erased by the running noise of another car because the noise level is low, so that a
contact accident is caused. There is a risk of triggering. In order to solve such a problem, an
electric car that always emits a warning sound as the vehicle travels has been proposed, but in a
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quiet environment, the warning sound causes noise. On the other hand, in a piano equipped with
a muffling function, it is up to the user to decide whether or not to perform muffling, so a user
who is not aware of this is usually playing at a loud volume despite the quietness of the
surroundings. There was a problem that they performed (such as playing with strings) and
caused trouble to the people around them. In addition, even if the surrounding environment
changes from a quiet state to a loud state, if the user who is not aware of this performs a mute
performance or performs a normal performance with a small volume, the performance sound will
not be heard. Problems had arisen. The present invention has been made in view of the abovedescribed circumstances, and it is an object of the present invention to provide a notification
device, a musical instrument, and a sound generation device for vehicles capable of appropriate
sound generation by detecting the physical quantity of the surrounding environment. Do.
[0004]
[Means for Solving the Problems] In order to solve the above-mentioned problems, a notification
device according to claim 1 is a notification device for notifying a user of information related to
setting of a sound generation device which generates a sound according to a user's instruction. It
comprises: detection means for detecting a physical quantity of the surrounding environment of
the sound generation device; and notification means for notifying a user of the recommended
setting of the sound generation device according to the physical quantity detected by the
detection means. It features.
[0005]
According to a second aspect of the present invention, there is provided an instrument,
comprising: a performance operator; sound generation means for generating a sound according
to an operation of the performance operator by the user; detection means for detecting a
physical quantity of an environment surrounding the sound generation means; According to the
physical quantity detected by the detection means, it is characterized by comprising: notification
means for notifying the user of the recommended setting of the sound generation means.
[0006]
According to a third aspect of the present invention, there is provided a musical instrument,
comprising: a performance operator; sound generating means for generating a sound according
to the user's operation of the performance operator; and a sensor for detecting a physical
quantity of an environment surrounding the sound generation means. And a notification unit for
notifying a user of recommended setting of the sound generation unit based on the detection
result received by the reception unit.
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[0007]
Further, the musical instrument according to claim 4 detects a physical property of an
environment surrounding the mechanical sound generation means, mechanical sound generation
means for mechanically generating a sound according to the operation of the performance
operation element, and the mechanical sound generation means. And control means for
controlling the mechanical sound generation means in accordance with the physical quantity
detected by the detection means.
[0008]
A musical instrument according to claim 5 is a musical instrument comprising a performance
operator and mechanical sounding means for mechanically generating a sound according to the
operation of the performance operator, wherein the mechanical sounding means Has a plurality
of performance modes and detects the physical quantity of the surrounding environment of the
mechanical sound generation means, a setting means for setting the performance mode to the
mechanical sound generation means, and the detection means And a play mode switching means
for switching the play mode set in the mechanical sound generation means according to the
physical quantity.
[0009]
According to a sixth aspect of the present invention, there is provided a vehicle sounding device
comprising: sound generation means for generating a sound directed to the surroundings
according to a user's instruction; detection means for detecting a physical quantity around the
sound generation means; It is characterized by comprising: notification means for notifying the
user of the recommended setting of the sound generation means according to the detected
physical quantity.
[0010]
According to a seventh aspect of the present invention, there is provided a vehicle sound
producing apparatus comprising: sound producing means for producing sound toward the
periphery; detection means for detecting the noise level of the sound producing means; and noise
detected by the detection means. And sound generation control means for controlling the
generation of sound by the sound generation means in accordance with the level.
[0011]
Further, in the vehicle sounding device according to claim 8, in the configuration according to
claim 7, the sounding control means is configured to generate the sound generated by the
sounding means according to the noise level detected by the detection means. At least one
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parameter of type, volume, and generation timing is controlled.
[0012]
Further, in the vehicle sound producing apparatus according to claim 9, in the configuration
according to claim 7, the sound producing means has a plurality of sound sources, and the sound
production control means has a noise level detected by the detection means. According to the
present invention, generation of sound by the sound generation means is controlled by selecting
a sound source to be used from among the plurality of sound sources.
[0013]
DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described
below in terms of application to an automatic piano and an electric car.
The embodiment shows one aspect of the present invention, and does not limit the present
invention, and can be arbitrarily changed within the scope of the technical idea of the present
invention.
[0014]
A.
First Embodiment (1) Configuration of Embodiment A-1.
Automatic Piano 200 FIG. 1 is a view showing an appearance configuration of the automatic
piano 200 according to the present embodiment, and FIG. 2 is a view showing a configuration of
main parts of the automatic piano 200. As shown in FIG.
The automatic piano 200 has an action mechanism 3 for transmitting the motion of the key 1 to
the hammer 2, a string 4 struck by the hammer 2, a damper 5 for blocking the drive of the string
4, and the hammer 2 after striking. It has a back check 6 to prevent runaway, a solenoid 7 which
is controlled by a servo controller 12 described later and drives the key 1, and a key sensor 8
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which detects the movement of the key 1. These configurations are generally automatic It is
similar to the piano.
Further, the automatic piano 200 includes a muffling mechanism 10 configured of a stopper 9
and a motor (not shown), and a controller 300 described later rotates the motor (a stopper 9
shown by a broken line in FIG. 2). , It is possible to block the stroke by the hammer 2.
[0015]
Furthermore, an ambient environment measuring device 100 for detecting a predetermined
physical quantity (for example, noise level etc.) around the automatic piano 200 is connected to
the automatic piano 200 via a cable 10 (see FIG. 1).
The ambient environment measuring device 100 is installed, for example, in a lobby of a hotel
and detects a noise level and the like in the lobby.
The auto piano 200 is installed in the next room of the lobby, etc., and based on the detection
result supplied from the ambient environment device 100 via the cable 10, the noise level etc. of
the lobby where the ambient environment device 100 is installed is grasped. And execute various
controls (described later).
[0016]
A−2.
Controller 300 FIG. 3 is a block diagram showing a schematic configuration of a controller
according to the present embodiment.
The controller includes a CPU 301 for controlling each part of the automatic piano, a ROM 302
for storing various control programs, control data, etc., a RAM 303 for temporarily storing
various data, and a panel switch section 304 provided with various control switches. A tone
signal is generated based on performance control data such as a key number (= key code),
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velocity (data corresponding to the strength of key depression), key on signal, hammer on, key
off signal supplied from the CPU 301, and a speaker A sound source circuit 310 for supplying SP
or headphones HP is provided.
[0017]
In addition, the controller 300 drives the muffling mechanism 10 under the control of the CPU
301 and the sensor I / F 220 that outputs to the CPU 301 a signal corresponding to the light
reception state of the key sensor 8 provided corresponding to each key 1 Temporarily stored in
the RAM 303, the disk drive 250 for writing / reading performance information to / from the
recording medium 251 such as a compact disk, floppy (registered trademark) disk, etc. The servo
controller 12 generates a solenoid drive signal based on the performance information and
supplies the generated drive signal to the solenoid 7 so as to enable automatic performance.
[0018]
Furthermore, the controller 300 is provided with a liquid crystal display device 305 that displays
various messages and the state (for example, playing state etc.) of the automatic piano under the
control of the CPU 301.
A transparent touch panel 306 is disposed on the surface of the liquid crystal display device 305,
and the user can operate the touch panel 306 while checking the display screen displayed on the
liquid crystal display device 305. There is.
[0019]
FIG. 4 is a view exemplifying a play mode setting screen displayed on the liquid crystal display
device 305. As shown in FIG. As shown in the figure, on the performance mode setting screen of
the liquid crystal display device 305, various performance modes such as a "string sound
performance mode", an "electronic sound performance mode", and a "combination performance
mode" are displayed. The string playing mode ( 1 ) is a playing mode in which the string 4 of
the corresponding pitch is struck by the hammer 2 in response to the pressing operation of the
key 1. When the user operates the touch panel 306 to select the string playing mode ( 1
shown in FIG. 4), the controller 300 drives the muffling mechanism 10 to move the stopper 9 to
the withdrawal position where the stringing is not blocked ( See the stopper 9 shown by a solid
line in FIG. The electronic sound performance mode ( 2 ) is a performance mode in which a
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corresponding electronic sound signal is output from the sound source circuit 310 to the speaker
SP or the headphone HP in response to the pressing operation of the key 1. When the user
operates the touch panel 306 to select the electronic sound playing mode ("2" shown in FIG. 4),
the controller 300 drives the muffling mechanism 10 to move the stopper 9 to the blocking
position where the string is blocked. (Refer to the stopper 9 shown by a broken line in FIG. 2)
The sound source circuit 310 is set in the operating state.
[0020]
In the combination performance mode ("3"), the string 4 of the corresponding pitch is struck by
the hammer 2 in response to the pressing operation of the key 1, while the corresponding
electronic sound signal is generated in response to the pressing operation of the key 1. This is a
performance mode that is output from the circuit 310 to the speaker SP or the headphone HP,
and is configured such that the stringed sound by the hammer 2 and the electronic sound
corresponding to the stringed sound are simultaneously generated. Note that the user can select
whether to output the electronic sound signal generated in the sound source circuit 310 from the
speaker SP or output from the headphone HP by operating the touch panel 306, but the
following description will be made. These figures assume that the electronic sound signal
generated in the sound source circuit 310 is output from the speaker SP in the initial state.
[0021]
Referring back to FIG. 3 again, the controller 300 further includes an external device I / F 223.
The external device I / F 223 includes a connection terminal for the ambient environment
measurement apparatus 100, in addition to a MIDI terminal, a connection terminal for
connecting a personal computer, and the like. By connecting the ambient environment measuring
device 100 to the external device I / F 223, the controller 300 can transmit commands and the
like to the ambient environment measuring device 100, receive detection results from the
ambient environment measuring device 100, and the like. Become.
[0022]
A−3. Ambient Environment Measuring Device 100 The ambient environment measuring
device 100 is a device that detects a predetermined physical quantity around the automatic
piano 200. The ambient environment measuring device 100 according to the present
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embodiment includes a microphone, converts sound input to the microphone into an electrical
signal, and detects the ambient noise level by measuring the level of the converted electrical
signal. When the ambient environment measuring apparatus 100 detects a noise level, the
detection result is read into the CPU 301 as a measurement value S. In the present embodiment,
it is assumed that the CPU 301 reads the noise level detected in the ambient environment
measuring apparatus 100 as the measurement value S. For example, the ambient noise level
detected by the ambient environment measuring apparatus 100 is always Alternatively, it may be
configured to output to the automatic piano 200 at predetermined time intervals.
[0023]
After reading the measured value S, the CPU 301 searches the noise reference table TA stored in
the RAM 303 using the measured value S as a search key. FIG. 5 is a diagram for explaining the
noise reference table TA stored in the RAM 303. As shown in FIG. The noise reference table TA is
a table in which the noise level measured in the ambient environment measuring apparatus 100
is associated with setting information (hereinafter referred to as recommended setting as
appropriate) regarding the performance mode to be recommended to the user and the volume
etc. .
[0024]
For example, when the content shown in FIG. 5 is stored in the noise reference table TA, the CPU
301 detects that the ambient environment device 100 detects that the noise level is 40 to 50 dB
(day of quiet residential area), With reference to the recommended setting information
corresponding to noise level; 40 to 50 , it is recommended for the user to set the
performance mode to electronic sound performance mode and to set the volume level of
electronic sound to 4 . On the other hand, when the ambient environment device 100 detects
that the noise level is 80 to 90 dB (noisy street), the CPU 301 refers to the recommended setting
information corresponding to noise level; 80 to 90 . It is recommended for the user to set the
performance mode to "combination mode" and to set the volume level of the electronic sound to
"7". Furthermore, when the ambient environment device 100 detects that the noise level is 30 dB
or less (a quiet residential area at night), the CPU 301 refers to the recommended setting
information corresponding to the noise level; It is recommended to the user that the output
setting should be switched from the speaker SP to the headphone HP while the mode is set to the
"electronic sound playing mode".
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[0025]
As described above, when the CPU 301 reads the measured value S from the ambient
environment measuring apparatus 100, the CPU 301 refers to the noise reference table TA and
reads the recommended setting information corresponding to the measured value S. Then, the
CPU 301 creates a message related to the read recommended setting information (hereinafter
referred to as a recommended setting message), and displays the message on the liquid crystal
display device 305 to notify the user of the recommended setting. Hereinafter, an operation until
the automatic piano 200 according to the present embodiment notifies the user of the
recommended setting will be described in detail.
[0026]
(2) Operation of the Embodiment The user who desires to play the automatic piano 200 first
presses the recommended setting button (not shown) of the panel switch 304. When the CPU
301 detects that the recommendation setting button has been pressed, it initializes a register,
flag, etc. defined in the RAM 303, and a command to start measurement of the noise level
(hereinafter referred to as a measurement start command). Are supplied to the ambient
environment measuring apparatus 100 via the external device I / F 223. When the ambient
environment measuring apparatus 100 receives a measurement start command via the cable 10,
it converts the sound input from the microphone into an electrical signal and starts detection of
the noise level by measuring the level of the converted electrical signal. Do.
[0027]
On the other hand, when the CPU 301 outputs a measurement start command to the ambient
environment measuring apparatus 100, the CPU 301 executes recommended setting notification
processing in accordance with the recommended setting notification processing program stored
in the ROM 302. FIG. 6 is a flowchart showing a flow of recommended setting notification
processing. When the CPU 301 reads the measured value S corresponding to the noise level
detected by the ambient environment measuring device 100 in step S1, the noise reference table
TA (FIG. 5) is stored in the RAM 303 using the read measured value S as a search key. Refer to)
(step S2). When the CPU 301 determines that the read measured value S is, for example, 48 dB
and the noise level is in the range of 40 to 50 dB, the recommended setting information
associated with the noise level (performance mode; "Mode", volume level; "4") is read out. Then,
based on the read recommended setting information, the CPU 301 creates a recommended
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setting message, displays the message on the liquid crystal display device 305 (step S3), and
ends the process.
[0028]
FIG. 7 is a view exemplifying a screen on which a recommended setting message is displayed on
the liquid crystal display device 305. As shown in the figure, on the display screen, a selection
button for selecting whether or not to make settings in accordance with the recommended
setting message and the message content ("YES" button, "NO" button shown in FIG. 7) Is
displayed. If the user determines from the recommended setting message that the surrounding
environment is quiet and that the performance based on the recommended setting should be
performed, the user presses the "YES" button displayed on the display screen. When detecting
that the YES button is pressed, the CPU 301 executes control based on the above-mentioned
recommended setting. Specifically, when it is detected that the "electronic sound performance
mode" is selected as the performance mode and "4" is selected as the volume level, the CPU 301
supplies a drive current to the muffling mechanism drive circuit 208, as shown in FIG. The motor
9 is rotated to move the stopper 9 to the blocking position for blocking the string, and the sound
source circuit 310 is set to the operating state to adjust the volume level to "4".
[0029]
On the other hand, when the user presses the NO button, the CPU 301 displays the display
screen shown in FIG. 4 on the liquid crystal display device 305. In this case, the user selects one
performance mode from a plurality of performance modes displayed on the display screen by
manual operation, and adjusts the volume etc. by operating the panel switch 304, and performs
settings relating to performance. . The operation after the selection of the performance mode, the
adjustment of the volume level, and the like is similar to that of the conventional automatic piano,
and thus the description thereof is omitted.
[0030]
As described above, the automatic piano 200 according to the present embodiment recognizes
the noise level and the like of the surrounding environment before the user starts playing. A
noise reference table TA in which the noise level and the recommended setting information are
associated is stored in the RAM 303 of the automatic piano, and when the automatic piano 200
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reads the noise level detected by the ambient environment measuring device, the noise By
displaying a recommendation setting message on the liquid crystal display device 305 with
reference to the reference table TA, the user is notified of the recommendation setting.
[0031]
Therefore, when starting the performance, the user checks the recommended setting message
displayed on the liquid crystal display device 305 to select the optimal performance mode
according to the ambient noise level and perform the optimal volume adjustment etc. This can,
for example, suppress the problem that a user who is not aware of this may play the piano at a
large volume, even though the surrounding environment is quiet, and cause inconvenience to the
people around him. It becomes possible.
[0032]
On the other hand, if the surrounding area is noisy, for example, a recommended setting message
to be played by raising the volume is displayed on the liquid crystal display device 305.
By setting based on the message, the user can suppress the problem that the performance sound
can not be heard.
[0033]
In addition, below the display screen on which the recommendation setting message is displayed,
a selection button for selecting whether to perform setting according to the content of the
message ("YES" button, "NO" button shown in FIG. 7) Is displayed. When the user determines that
the setting should be made in accordance with the content of the message, the user can select the
optimum performance mode and perform the optimum volume adjustment etc. by the simple
operation of pressing the "YES" button. .
[0034]
(3) Modifications Although the embodiment of the present invention has been described above,
the above embodiment is merely an example, and various modifications may be added to the
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above embodiment without departing from the spirit of the present invention. it can. As a
modification, for example, the following can be considered.
[0035]
<Modification 1> The automatic piano 200 according to the above-described embodiment is
configured to execute the recommended setting notification process shown in FIG. 6 when the
user presses the recommended setting button (not shown) of the panel switch 304. However, the
recommended setting notification process may be executed at predetermined time intervals by
using, for example, a timer (not shown). For example, when the noise level detected in the middle
of playing becomes lower than the noise level detected at the start of playing, a message to the
effect that the volume should be suppressed is given to the liquid crystal display device 305.
While displaying, when the noise level detected in the middle of playing becomes higher than the
noise level detected when starting the performance, the liquid crystal display device displays a
message indicating that the volume should be increased to perform Displayed on 305. As
described above, by switching the message content displayed on the liquid crystal display device
305 at predetermined time intervals, the user who is not aware of the above-mentioned problem,
that is, the environment around the automatic piano 200 is quiet, is loud. It is possible to further
suppress the problem of playing at the same time and causing inconvenience to the surrounding
people.
[0036]
<Modification 2> When the automatic piano 200 according to the present embodiment described
above reads the measured value S from the ambient environment measuring apparatus 100, the
recommended setting message is created with reference to the noise reference table TA stored in
the RAM 303. However, it is also possible to create a recommendation setting message without
using the noise reference table TA. FIG. 8 is a flowchart showing a flow of recommended setting
notification processing according to the second modification. In this modification, as in the first
modification described above, it is assumed that the recommended setting notification process is
executed at predetermined time intervals using a timer (not shown). When the CPU 301 reads
the measured value S1 corresponding to the noise level detected by the surrounding
environment measuring apparatus 100 in step Sa1, the CPU 301 measures the difference A
between the read measured value S1 and the measured value S0 detected by the surrounding
environment measuring apparatus 100 last time. It is determined whether or not the absolute
value ¦ A ¦ of the difference is equal to or less than the reference difference value A0 stored in
the RAM 303 (step Sa2).
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[0037]
If the CPU 301 determines that the absolute value ¦ A ¦ of the calculated difference is less than or
equal to the reference difference value A0 in step Sa2, the CPU 301 skips step Sa3 and ends the
process. On the other hand, if it is determined in step Sa2 that the absolute value ¦ A ¦ of the
calculated difference is larger than the reference difference value A0, the CPU 301 refers to the
sign of the calculated difference to determine whether the noise level has become low or It is
judged whether it has become high (for example, if the sign is + , it is judged that the noise
level has become low, etc.). Based on the determination result, for example, the CPU 301 creates
a recommended setting message indicating that the volume should be reduced and that the user
should play a performance, and displays this on the liquid crystal display device 305 (step Sa3),
and ends the processing.
[0038]
FIG. 9 is a view exemplifying a screen displayed on the liquid crystal display device 305. As
shown in the figure, on the upper side of the display screen, a message indicating that the noise
level has decreased and a recommended setting message indicating that the volume should be
suppressed are displayed. When the user confirms the contents of the display screen, the user
operates the panel switch 304 to perform setting for suppressing the volume and playing. Thus,
the difference A between the noise level detected this time and the noise level detected last time
is determined, and the above-mentioned message is displayed only when the absolute value ¦ A ¦
of the difference is larger than the reference difference value A0. It may be displayed on the
display device 305. In this modification, the message indicating that the noise level has
decreased and the recommended setting message indicating that the sound volume should be
reduced are displayed. However, one of the messages (for example, the noise level) has been
described. May be displayed only).
[0039]
<Modification 3> FIG. 10 is a flow chart showing a flow of recommendation setting notification
processing according to a modification 3. The recommended setting notification process flow
shown in the figure is obtained by providing steps Sb3 and Sb4 with respect to the recommended
setting notification process flow shown in FIG. In the second modification described above, the
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recommended setting message is displayed only when the calculated absolute value ¦ A ¦ of the
difference becomes larger than the reference difference value A0, for example, as shown in FIGS.
11 (a) and 11 (b). As shown in), when the noise level changes gradually, the recommendation
setting message is not displayed on the display screen. In this modification, even when the noise
level changes gradually, the recommendation setting message is displayed under predetermined
conditions.
[0040]
If the CPU 301 determines in step Sa2 that the absolute value ¦ A ¦ of the calculated difference is
less than or equal to the reference difference value A0, the process proceeds to step Sb3, and the
measured value S1 is the lowest noise reference level stored in the RAM 303. Compare with the
value Smin. If the CPU 301 determines that the measured value S1 is smaller than the minimum
noise reference level Smin in step Sb3, the process proceeds to step Sa3 and the detected noise
level (measured value S1) falls below the minimum noise reference level Smin. A message
indicating the effect and a recommended setting message indicating that the performance should
be performed while suppressing the volume is created, the created message is displayed on the
liquid crystal display device 305, and the process is ended.
[0041]
On the other hand, when the CPU 301 determines in step Sb3 that the measured value S1 is
equal to or higher than the lowest value Smin of the noise reference level, it proceeds to step Sb4,
and the measured value S1 and the highest value Smax of the noise reference level stored in the
RAM 303. Compare with. If the CPU 301 determines in step Sb4 that the measured value S1 is
larger than the maximum value Smax of the noise reference level, the process proceeds to step
Sa3 and a message and a volume indicating that the detected noise level exceeds the maximum
value Smax of the noise reference level. Is raised to create a recommended setting message
indicating that the user should play, the generated message is displayed on the liquid crystal
display device 305, and the process is ended. When the CPU 301 determines that the measured
value S1 is smaller than the maximum value Smax of the noise reference level in step Sb4, the
CPU 301 skips step Sa3 and ends the process.
[0042]
As described above, it may be determined whether or not to display the above message by using
the minimum value Smin of the noise reference level and the maximum value Smax of the noise
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reference level stored in the RAM 303.
[0043]
<Modification 4> Further, in the present embodiment, a microphone for detecting a noise level is
illustrated as a means for detecting the physical quantity of the surrounding environment, but for
example, an imaging means (for example, a video camera etc.) for imaging the surrounding
situation It can be used.
When the imaging unit is used, the controller 300 detects the movement of a person or the like
based on the image data supplied from the imaging unit, and displays a recommended setting
message concerning the performance on the liquid crystal display device 305 based on the
detection result. . As described above, the recommendation setting message may be displayed
based on the image data around the automatic piano 200 supplied from the imaging unit.
[0044]
Further, as another detection means, an optical sensor for detecting light and dark of light can be
used. When a light sensor is used, the controller 300 detects the light and dark of the
illumination of the room where the auto piano 200 is installed and the light and dark of the
outside light which is easily affected by the weather, based on the detection result supplied from
the light sensor. Based on the detection result, a recommended setting message relating to the
performance is displayed on the liquid crystal display device 305. For example, when it is
detected that the illumination in the room is dark, the liquid crystal display device 305 displays a
recommended setting message indicating that the user should play at a small volume.
[0045]
Further, as another detection means, a temperature sensor for detecting temperature or a
humidity sensor for detecting humidity can be used. When this temperature sensor or humidity
sensor is used, the controller 300 detects the temperature or humidity of the place where the
auto piano 200 is installed based on the detection result supplied from the temperature sensor or
humidity sensor, and based on the detection result The recommended setting message relating to
the performance is displayed on the liquid crystal display device 305. Further, as other detection
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means, a magnetic sensor for detecting the amount of magnetism, a pressure sensor for detecting
the atmospheric pressure or the like can be used, and even if it is other than these sensors, some
physical quantity of the surrounding environment can be measured. It is possible to apply to the
present invention as long as it is one.
[0046]
Furthermore, for example, the control described below can be performed by using a clock timer
that measures time as a unit that measures a physical quantity. The user operates the touch
panel or the like to input a time zone in which a particularly quiet environment is to be
maintained (for example, a time zone in which a child studies) on the automatic piano. The clock
timer measures time, and when the set time comes, notifies the CPU 301 to that effect. When the
CPU 301 receives the notification, the CPU 301 displays on the liquid crystal display device 305
a message indicating that the set time has come and a recommended setting message to be
notified at the set time. The user confirms the displayed text message and sets the performance
mode. As described above, the recommended setting character message may be displayed on the
liquid crystal display device 305 in the time zone set by the user.
[0047]
<Modification 5> Further, although the present embodiment is configured to exchange data by
wire connecting the automatic piano 200 and the ambient environment measuring apparatus
100 using the cable 10 or the like, wireless communication (for example, Data may be
transmitted and received using IEEE 802.11b, Bluetooth, White Cap, IEEE 802.11a, Wireless
1394), infrared communication (for example, IrDA), or the like. The ambient environment
measuring device 100 may be mounted on the automatic piano 200, and the ambient
environment measuring device 100 may be disposed on the upper surface of the main body of
the auto piano 200, the playing surface, or the like. When the ambient environment measuring
device 100 is disposed on the upper surface of the main body of the automatic piano 200, the
playing surface, or the like, it is necessary to distinguish between the user's playing sound and
the ambient noise. The noise level may be measured, for example, by arranging it toward the
person side (that is, in the direction in which the playing sound is not easily input to the
microphone).
[0048]
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<Modification 6> In the above-described embodiment, the present invention is applied to the
grand piano type automatic piano 200. However, the present invention is also applicable to, for
example, an upright piano. The present invention is not limited to keyboard instruments, and can
be applied to any instruments (for example, string instruments such as violins, percussion
instruments such as drums, wind instruments such as trumpet, etc.).
[0049]
<Modification 7> Further, in the above-described embodiment, the user is notified of the
recommended setting by displaying a text message on the liquid crystal display device 300.
However, the recommended setting is displayed on the user by blinking an LED, for example. You
may make it alert ¦ report. Moreover, it is also possible to notify using a voice message, a
warning sound, etc. instead of a text message, for example. In the case of notifying a user using a
voice message, a warning sound or the like, the display means is not necessary, so the present
invention can be easily applied to a musical instrument not having a display device.
[0050]
B. Second Embodiment The automatic piano according to the above-described first
embodiment is configured to notify the user of recommended settings and the like regarding the
performance according to the noise level detected by the surrounding environment measuring
device. On the other hand, the automatic piano according to the second embodiment
automatically controls switching of the performance mode, the volume and the like according to
the noise level detected by the ambient environment measuring device. In addition, since the
structure of the automatic piano which concerns on this embodiment is the same as that of the
structure (refer above-mentioned FIGS. 1-3) of the automatic piano which concerns on 1st
Embodiment, description is abbreviate ¦ omitted.
[0051]
FIG. 12 is a flowchart showing a flow of performance control processing executed by the CPU
301. The performance control process flow shown in this figure is provided with step Sc3 instead
of step S3 shown in FIG. The other steps are the same as in FIG. 6 above, so the corresponding
steps are given the same reference numerals and descriptions thereof will be omitted. When the
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CPU 301 reads the measured value S0 from the ambient environment measuring apparatus 100
in step S1, the CPU 301 searches the noise reference table TA (see FIG. 5) stored in the RAM 303
using the read measured value as a search key. The CPU 301 should switch the performance
mode from, for example, the string playing mode to the electronic playing mode and set the
volume level of the electronic sound to 4 based on the read measured value S0 (= 48 dB). If so,
the drive current is supplied to the muffling mechanism drive circuit 208, the motor (not shown)
is rotated, the stopper 9 is moved to the blocking position for blocking the stringing, and the
sound source circuit 310 is set to the operating state. The level is adjusted to 4 (step Sc3),
and the process is ended.
[0052]
As described above, by automatically controlling the performance mode, the volume and the like
according to the noise level detected by the ambient environment measuring apparatus 100, the
user can always perform without worrying about the ambient environment. . Further, according
to the present embodiment, since it is not necessary to notify the user of the recommended
setting relating to the performance, the present invention is also applicable to an automatic piano
or the like which is not provided with the notification means such as the liquid crystal display
device 305.
[0053]
<Modification 1> In the above-described embodiment, the driving of the stopper 9 is controlled
in accordance with the ambient noise level, but the configuration related to the other mechanical
sound generation mechanism mounted on the piano can be used as the ambient environment. It
may be controlled accordingly. For example, conventionally, there have been proposed many
pianos equipped with an escapement timing adjustment mechanism that makes the escapement
timing earlier than when playing in the string playing mode when the stopper 9 is in the blocking
position not blocking the stringing. It is done. When the present embodiment is applied to a
piano provided with the escape timing adjustment mechanism, not only the stopper but also the
escape timing adjustment mechanism may be controlled together.
[0054]
Further, as a mechanism for adjusting the escape timing, a mechanism (hereinafter referred to as
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"weak tone mechanism") that enables low tone performance is disclosed, for example, in
Japanese Patent Laid-Open No. 7-319452. The weak tone mechanism disclosed in the above
publication is provided with a second regulating button in addition to a normal regulating button,
and the second regulating button is made to enter the movement range of the jack during a weak
tone playing to escape. The timing is made earlier, which makes it possible to play a soft sound.
When the present invention is applied to a piano provided with such a weak sound mechanism,
when the noise level detected by the ambient environment measuring apparatus 100 is low, the
second regulating button is automatically set within the movement range of the jack. You can
move to the position of to realize a low-key performance.
[0055]
<Modification 2> Further, in the above-described embodiment, a string playing mode ( 1 ) in
which the string 4 of the corresponding pitch is struck by the hammer 2 in response to the
pressing operation of the key 1; The electronic sound performance mode ("2") in which the
corresponding electronic sound signal is output from the sound source circuit 310 to the speaker
SP or the headphone HP in response to the pressing operation, the string 4 of the corresponding
pitch corresponding to the pressing operation of the key 1 The combination performance mode
("3") in which the electronic sound signal corresponding to the pressing operation of the key 1 is
struck by the hammer 2 and outputted from the sound source circuit 310 to the speaker SP or
the headphone HP For example, the solenoid drive signal is generated based on the performance
information read from the recording medium 251 such as a floppy disk, for example, and the
generated drive signal is supplied to the solenoid 7. When performing playback it is also possible
to apply the present embodiment.
[0056]
For example, when the noise level detected by the ambient environment measuring apparatus
100 is low, the CPU 301 notifies the servo controller 12 that the volume should be reduced and
that the performance should be performed.
Based on the notification, the servo controller 12 supplies the solenoid 7 with a drive current
having a smaller current value than that during the normal automatic performance. The solenoid
7 drives the key 1 with a weak force on the basis of the given drive current, whereby a weak
sound performance is performed. As described above, the volume adjustment at the time of
automatic performance may be automatically controlled according to the ambient noise level.
Further, also in the present embodiment, all the modified examples according to the abovedescribed first embodiment can be applied.
01-05-2019
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[0057]
C. Third Embodiment In the first and second embodiments described above, the case where
the present invention is applied to a musical instrument (such as an automatic piano) has been
described. In the third embodiment described below, a case where the present invention is
applied to a road transportation means (electric car or the like) will be described.
[0058]
(1) Configuration of Embodiment FIG. 13 is a view showing an appearance of an electric vehicle
400 according to the present embodiment. A sounding device 500 for a vehicle is mounted on
the electric vehicle 400, and an ambient environment measuring device 520 for detecting a noise
level around the vehicle is installed on the upper surface 401. A sound generation device 530 is
provided to notify the presence to the surroundings. FIG. 14 is a block diagram showing the
configuration of a vehicle-sounding device 500. As shown in FIG. The vehicle sounding device
500 includes a controller 510, an ambient environment device 520, a sounding device 530, and
a liquid crystal display device 540. The controller 510 includes a CPU, a ROM, a RAM, and the
like, and plays a role of controlling each part of the vehicle sound producing device.
[0059]
The ambient environment measurement device 520 includes a microphone having
predetermined directivity and a sound collection range, converts sound data input from the
microphone into an electrical signal, and converts the converted electrical signal into noise raw
data to the controller 510. Supply. The sound generator 530 includes a plurality of types of
digital sound sources or analog sound sources (for example, a sound source that generates a bell
sound, a sound source that generates a bird cries, a sound source that generates a tone, a sound
source that generates a buzzer sound, etc.) Under the control of the controller 510, it is possible
to switch the type of sound, adjust the volume, etc. in accordance with the ambient noise level.
The liquid crystal display device 540 displays map information supplied from a navigation device
(not shown) and positional information indicating the current position of the vehicle under
control of the controller 510, and also displays a notification message and the like for the user.
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[0060]
(2) Operation of Embodiment When the user starts driving operation, the controller 510
transmits a command to the ambient environment measuring device 520 to detect the noise
level. When the ambient environment measuring device 520 receives the command, it converts
sound data input from the microphone into an electrical signal, and sequentially supplies the
converted electrical signal as noise raw data to the controller 510. When the controller 510
receives raw noise data from the ambient environment measuring device 520, a band pass filter
(not shown), a weighting network (A: upper and lower noise cut, B: cut a level close to the human
ear, C: B In addition, rough noise evaluation is performed by cutting the upper and lower levels, D
(for aircraft noise measurement, etc.), and noise evaluation at peak / non-peak noise levels is
performed.
[0061]
FIG. 15 is a diagram for explaining the noise evaluation graph SG created by the controller 510.
As shown in FIG. The vertical axis of the noise evaluation graph SG shown in the figure is the
sound level SPL (Sound Pressure Level), and the horizontal axis is the time T. When the controller
receives the raw noise data from the ambient environment measuring device, it sequentially plots
in corresponding positions. Then, the controller 510 performs the following processing at
predetermined time intervals (T0 shown in FIG. 15) to perform noise evaluation at peak / nonpeak of the noise level.
[0062]
When T0 has elapsed since the start of reception of noise raw data, controller 510 uses the
following equation (1) and equation (2) to determine peak average noise level SPL1 and nonpeak average noise level in unit time (T0) Calculate SPL2. Then, the controller substitutes the
calculated peak average noise level SPL1 and the non-peak average noise level SPL2 into the
following equation (3) to calculate the estimated noise level SPL3 and calculates the estimated
noise level SPL3 and the RAM And the noise reference table TB stored in. The controller 510
executes such processing every T0.
[0063]
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FIG. 16 is a diagram for explaining the noise reference table TB. The noise reference table TB is a
table in which the noise level is associated with the recommended setting information related to
the sound emitting device 530. The recommended setting information includes information on
the type of sound source to be used and volume information. For example, when the estimated
noise level SPL3 is 30 dB to 40 dB, the type of sound source to be used is "bird's cry" And the
volume level is set to "3".
[0064]
When the controller 510 reads the recommended setting information corresponding to the
estimated noise level SPL3 obtained from the RAM by referring to the noise reference table TB,
the read recommended setting information matches the recommended setting information read
from the RAM last time. Determine if you want to The controller 510 creates a recommendation
setting message only when determining that the recommendation setting information read this
time is different from the recommendation setting information read last time, and supplies this to
the liquid crystal display device 540.
[0065]
FIG. 17 is a view exemplifying a display screen displayed on the liquid crystal display device 540.
As shown in the figure, on the display screen, a selection button for selecting whether or not to
make settings in accordance with the recommended setting message and the message content
("YES" button, "NO" button shown in FIG. 17) Is displayed. When the user confirms this display
content, the user presses the "YES" button displayed on the display screen. When the controller
510 detects that the YES button has been pressed, the controller 510 executes control on
the sound generation device 530 based on the above-mentioned recommended setting. Here,
since the recommended setting is to set the type of sound source to be used to "bird's call" and
set the volume level to "3," the controller 510 activates the sound generation device 530 to
generate a bird's call While selecting a sound source, set the volume level to "3".
[0066]
When such a setting is performed, the sound producing device 530 generates a bird's cry at the
volume level "3". When the sound generation device 530 generates sound with a sound volume
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and sound source according to the ambient noise level, pedestrians and the like present in the
surroundings can recognize the approach of the electric vehicle 400, thereby suppressing the
risk of contact accidents and the like. can do.
[0067]
As described above, the vehicle sounding device 500 switches the volume setting of the sounding
device to be notified to the user according to the detected noise level of the surrounding
environment. That is, when the detected noise level is high, the user is informed that the sound
should be generated at a large volume, and when the detected noise level is low, the user is
notified that the sound should be generated at a small volume. Thus, when the traffic volume is
high and the noise level is high, the vehicle sound producing device 500 can cause the pedestrian
to recognize the approach of the vehicle by producing loud noise, while the traffic volume is low
and the noise level is low. In this case, it is possible to make the pedestrian recognize the
approach of the car and to control so as not to bother the nearby people by pronouncing at a
small volume.
[0068]
Further, the sound generation device 530 has a plurality of sound sources, and the vehicle sound
generation device 500 switches the sound source setting of the sound generation device to be
notified to the user according to the detected noise level of the surrounding environment. These
sound sources include sound sources that give a pleasant sense of hearing, such as sound
sources that generate bird calls. By using such sound sources according to the ambient noise
level, pedestrians can comfortably perceive the approach of the car It can be done.
[0069]
(3) Modifications <Modification 1> Although the vehicle sound producing device 500 according
to the embodiment described above is configured to notify the user of the recommended setting
regarding the sound producing device 530 according to the noise level of the surrounding
environment, As in the second embodiment described above, the setting (the type of the sound
source, the volume, and the like) of the sound generator 530 may be automatically controlled in
accordance with the noise level of the surrounding environment. As a result, the user does not
need to check whether or not the recommended setting message is displayed on the liquid crystal
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display device 540, and the user can concentrate on driving. The method of automatic control
can be described in the same manner as the second embodiment described above, and thus the
description thereof is omitted.
[0070]
<Modification 2> FIG. 18 is a view for explaining a noise reference table TC according to
modification 2. As shown in FIG. The noise reference table TC shown in the figure is the
recommended setting information shown in FIG. 16 added with information on the on / off of the
sound generator 530, and when the detected noise level is 70 dB or more, the sound generator It
is set that 530 turns off. By configuring the noise reference table in this manner, the vehicular
sound producing device 500 produces a small volume only when the traffic volume is low and
the noise level is low. As a result, it is possible to make the pedestrian recognize the approach of
the car and to suppress the problem that the vehicle sound generating device 500 generates a
large noise.
[0071]
<Modification 3> Further, in the above-described embodiment, the display screen of the liquid
crystal display device 540 displays a recommended setting message and a selection button for
selecting whether or not to perform setting in accordance with the content of the message.
However, for example, only the recommended setting message is displayed on the display screen
of the liquid crystal display device 540, and the user operates the sound generation device
operation mechanism (not shown) provided in the vicinity of the driver's seat. Switching, volume
adjustment, etc. may be performed.
[0072]
<Modification 4> Further, in the above-described embodiment, the user is notified of the
recommended setting and the like by using the text message, but as in the above-described
modification 7 according to the embodiment, the voice message is used. Thus, it is possible to
notify the user of recommended settings and the like.
For example, a speaker for voice message output, a microphone for inputting a voice of a driving
user, and a voice recognition device in which waveform data related to the voice of the user and
a command related to the voice generation device 530 are registered. The user utters a command
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relating to the sound generation device 530 based on the voice message output from the
speaker. The command uttered by the user is input to the speech recognition apparatus via the
microphone, and after phoneme analysis, matching of waveform data and the like are performed,
the analysis result is output to the controller 510. The controller 510 selects a sound source of
the sound producing device, adjusts the volume, etc. based on the analysis result supplied from
the voice recognition device, whereby the sound producing device 530 emits a controlled sound
according to the noise level.
[0073]
According to such a configuration, the user can input a command relating to the sound
generation device 530 by voice, so confirmation of whether or not the recommended setting
message is displayed on the liquid crystal display device 530 is unnecessary, and control based
on the setting Also, no input operation is required to execute. This allows the user to concentrate
on driving, and can suppress problems such as distraction to the surroundings.
[0074]
<Modification 5> Furthermore, although the vehicle sounding device 500 according to the
present embodiment described above is configured to detect the noise level around the vehicle, it
is configured to detect, for example, the level of noise emitted by the vehicle. You may.
Specifically, the microphone is disposed facing the host vehicle, and the microphone collects
noise emitted from the host vehicle to the surroundings. The controller 510 sends a command to
the ambient environment measuring device 520 to detect the noise level. Based on the command,
the ambient environment measuring device 520 converts the sound input from the microphone
(that is, the sound emitted from the vehicle to the surroundings) into an electrical signal, and the
converted electrical signal is sequentially transmitted to the controller 510 as noise raw data. We
will supply. When the controller 510 receives the noise raw data from the ambient environment
measuring device 520, it detects the noise level based on the noise raw data and compares it
with the noise reference table TD (see FIG. 19) stored in the RAM.
[0075]
As described above, in order to detect the level of the noise emitted by the own vehicle, the
vehicle sound generating apparatus 500 according to the present modification example includes
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the recommended setting information constituting the noise reference table TD and the noise
reference table TB shown in FIG. It is different from the recommended setting information to be
configured. When the controller 510 reads out the recommended setting information
corresponding to the detected noise level from the RAM by referring to the noise reference table
TD, does the read recommended setting information match the previously read recommended
setting information? Decide whether or not. Only when it is determined that the recommended
setting information read out this time is different from the recommended setting information
read out last time, the controller 510 creates the recommended setting message read out this
time and displays this on the liquid crystal display device 540. In addition, about subsequent
operation ¦ movement, since it can be demonstrated similarly to this embodiment mentioned
above, it omits.
[0076]
As described above, the vehicle sound generating device 500 according to the present
modification detects the level of the noise emitted by the host vehicle, and informs the user of the
recommended setting related to the sound generation device 530 according to the detected noise
level. When the setting based on the recommended setting is performed by the user, the sound
generation device 530 starts sound generation to notify pedestrians and the like present in the
vicinity of the approach of the vehicle. As a result, as in the above-described embodiment, a
pedestrian or the like can recognize the approach of the vehicle and can suppress the danger
such as a contact accident.
[0077]
In addition, by applying the above-described modification 1 to the present modification, it is
configured to automatically control the setting (type of sound source, volume, etc.) regarding the
sound generation device 530 according to the level of noise emitted by the vehicle. Also good. As
a result, the user does not need to check whether the recommended setting message is displayed
on the liquid crystal display device 540 or the like, and the user can concentrate on driving.
[0078]
<Modification 6> Furthermore, although an electric car is illustrated as an example of the road
transportation means in the present embodiment, any road such as a car powered by an internal
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combustion engine, a bicycle, a motorcycle, a wheelchair, a tricycle, a walking assistance machine
It is possible to apply this embodiment to transportation means. It is needless to say that the
modification according to the above-described first and second embodiments can be applied to
this embodiment as well.
[0079]
As described above, according to the present invention, the setting relating to the sound
generation of the sound generation device has the effect of being able to perform the optimum
setting according to the surrounding environment.
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