JPH08214392

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DESCRIPTION JPH08214392
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
headset apparatus for voice interaction which can record and transmit external environmental
sound.
[0002]
In particular, by using between remote locations, the environment of the site can be transmitted
as sound simultaneously with conversation, and a two-way sound transmission with a sense of
reality becomes possible. It is particularly effective in the field of realistic communication where
the atmosphere of the acoustic space experienced by oneself is conveyed to the other party at a
remote place with the commentary etc. by one's own voice.
[0003]
2. Description of the Related Art Conventional headset microphones are mainly used for voice
recording such as conversation and singing, and there are ear-hook type microphones,
headphone-integrated type microphones and the like. In addition, there are also devices that have
a function to turn on / off the switch of the sound recording microphone by moving up and down
the sound recording microphone provided on the movable boom. Thus, the conventional headset
microphone is used as an apparatus for voice recording for conversation and the like.
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[0004]
[Problems to be solved by the invention] In the conventional headphone with a microphone for
voice interaction, only the voice of the user can only be transmitted in monaural, and the
atmosphere, situation, etc. of the place where the headphone user is Could not be communicated
to the other party's interlocutor.
[0005]
The present invention solves the above-mentioned problems, and enables the user to convey the
atmosphere of the place where the user is present as stereo sound at the same time as the
conversation voice, and provides a means for enabling a realistic remote interaction. The purpose
is
Here, naturally mixing conversational speech and external environmental sound, and depending
on the situation, depending on the situation, so that the external environmental sound at multiple
locations will not be confused and be heard by the listener It is desirable to take care that the
environmental noise of the
[0006]
FIG. 1 is a view for explaining the principle of the present invention. In FIG. 1, 1 is an audio signal
input terminal, 2 is a microphone for collecting environmental sound, 3 is a conversation
microphone with a boom, 4 and 5 are mixed volumes, 6 is an ear speaker for audio presentation
(headphones), and 7 is an audio signal output A terminal 8, an audio band checker 9, a boom
position detector 9, and a movable boom 10 are shown.
[0007]
According to the present invention, in order to solve the above-mentioned problems, in
particular, the headset device is provided with the environmental sound recording microphone 2
for recording the external environmental sound, and the external environmental sound and the
other party's speech input from the environmental sound recording microphone 2 The main
feature of the present invention is to provide mixing volumes 4 and 5 for mixing the voice of the
person or the voice of the person at different volume ratios.
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[0008]
The audio signal input terminal 1 is an input terminal for inputting an audio signal of mixed
sound of a conversational voice of a communicator at a remote place and an external
environmental sound.
The environmental sound recording microphone 2 is a microphone for recording an external
environmental sound around the user, and, for example, in order to record a sound similar to the
environmental sound that the user himself can hear, It is provided in the vicinity. The boomequipped conversational microphone 3 has a movable boom 10 and is a microphone for
recording the user's conversational sound.
[0009]
The mixing volume 4 is a circuit for mixing the audio signal from the audio signal input terminal
1 and the external environmental sound from the environmental sound recording microphone 2.
The mixing volume 4 changes the volume ratio between the audio input signal to be mixed and
the external environmental sound under the control of the audio band checker 8.
[0010]
The mixed volume 5 is a circuit that mixes the external environmental sound from the
environmental sound recording microphone 2 with the conversational sound from the boomed
conversational microphone 3. The mixing volume 5 changes the volume ratio of the external
environmental sound to be mixed and the speech sound according to the detection result of the
boom position detector 9.
[0011]
The ear presentation speaker for sound presentation 6 is a means for outputting a mixed sound
of the audio signal (the voice of the other party and the external environment sound of the other
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party) mixed by the mixing volume 4 and the external environmental sound of the user. The
audio signal output terminal 7 transmits to the other party an audio signal obtained by mixing
the external environment sound of the user's location input from the environment sound
recording microphone 2 and the user's own speech with the mixing volume 5 It is an output
terminal for audio output.
[0012]
The audio band checker 8 monitors the frequency band of the voice input from the audio signal
input terminal 1 to determine whether the input audio signal includes an external environmental
sound or only the other party's voice, The control signal of the mixing volume 4 for changing the
volume ratio of the audio signal from the audio signal input terminal 1 and the external
environmental sound from the environmental sound recording microphone 2 is sent out.
[0013]
The boom position detector 9 detects the boom position of the movable boom 10 provided in the
conversation microphone 3 with a boom, and the external environmental sound from the
environmental sound recording microphone 2 and the conversation sound from the conversation
microphone 3 with a boom And the control signal of ON / OFF of the microphone 3 for
conversation with a boom and the microphone 2 for environmental sound recording.
[0014]
For example, as shown in FIG. 1 (B), the boom position detector 9 detects the angle
corresponding to the vertical movement of the movable boom 10, so that the conversation
microphone 3 with the boom is close to the user's mouth In some cases, the mixing ratio of the
user's speech sound increases, and below that, the mixing ratio of the environmental sound from
the environmental sound recording microphone 2 increases according to the angle of the boom.
When in the upper OFF position, the mixing volume 5 and the microphone switch (not shown)
are controlled so that the switches of the environmental sound recording microphone 2 and the
boom-equipped conversational microphone 3 are turned OFF.
[0015]
In the present invention, the ratio between the external environmental sound and the
conversational sound in the audio output to the audio signal output terminal 7 can be changed
by the vertical movement of the movable boom 10 of the conversation microphone 3 with boom.
.
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Further, the mixing ratio of the external environmental sound and the audio input signal from the
other party can be changed for the output to the user's own ear speaker 6 for sound
presentation.
[0016]
For example, when the user A speaks between the user A and the user B, the audio signal from
the user A received by the user B is such that the volume ratio of the conversation sound to the
external environment sound is strong.
The user B normally hears the external environment sound around the user B's own user, but if
the input of the audio signal from the user A strongly includes the user A's external environment
sound, the user B's external environment It is controlled so that the ratio of the sound becomes
weak and the external environmental sound of the user A can be heard.
As a result, when a conversation is made between the user A and the user B, a situation in which
the environment sounds of each other are heard simultaneously and confused is prevented.
[0017]
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present
invention will be described below. FIG. 2 is a view showing the appearance of an embodiment of
the present invention.
[0018]
In FIG. 2, 20 represents an audio band checker / mixing volume unit, 21 represents a hair band,
22 represents a four-wire cable for stereo input / output, 23 represents an audio I / O connector,
24 represents a stereo input terminal, and 25 represents a stereo output terminal .
[0019]
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The present apparatus includes environmental sound recording microphones 2L and 2R
configured by unidirectional microphones in left and right ear pads of the closed air type
headphones 6L and 6R.
Alternatively, environmental sound recording microphones 2L 'and 2R' may be provided near the
left and right ears of the headband 21. With these left and right unidirectional microphones,
environmental sounds around the user can be recorded in stereo sound.
[0020]
The conversation microphone 3 is a microphone for recording the user's conversation. The
conversational microphone 3 can be freely moved by the movable boom 10 between the
uppermost OFF position, the set position of the mouth, and the lowermost position near the chin.
[0021]
The user moves the movable boom 10 up and down between the set position of the mouth and
the lowermost position, and uses it for recording with the speech sound and environmental
sound recording microphones 2L and 2R recorded with the conversation microphone 3 Change
the mixing ratio with the external environmental sound of the person. At the set position of the
mouth, the ratio of the speech sound is maximum, and at the lowermost position, the ratio of the
environmental sound is maximum. When not in use, the movable boom 10 is pushed up to set
the conversation microphone 3 to the OFF position. As a result, the switches of the
conversational microphone 3 and the environmental sound recording microphones 2L and 2R
are both turned off, and neither the conversational sound nor the external environmental sound
is recorded.
[0022]
The speech sound recorded by the speech microphone 3 and the external environmental sound
recorded by the environmental sound recording microphones 2L and 2R are separately mixed on
the left and right according to the mixing ratio set by the position of the movable boom 10, and
stereo input Audio is output from the stereo output terminal 25 of the audio I / O connector 23
via the output 4-wire cable 22.
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[0023]
The audio band checker / mixing volume unit 20 is a portion in which the circuits of the audio
band checker 8 and the mixing volumes 4 and 5 shown in FIG. 1 are arranged, and here the
center of the headband 21 in terms of weight balance and internal wiring. It is provided to be
located in
[0024]
The voice and the environmental sound from the other speaker are audio-input from the stereo
input terminal 24.
When environmental sound is strongly included in the audio input signal, the ratio of the audio
input signal from the stereo input terminal 24 is increased by the audio band checker / mixing
volume unit 20, or only the audio input signal is output to the headphones 6L and 6R. Output to
reduce the mixing ratio of one's external environmental sound.
When the other party's environmental sound is not included in the audio input signal, the
environmental sound recorded by the environmental sound recording microphones 2L and 2R is
mixed to some extent with the audio input signal from the stereo input terminal 24 to
headphones 6L and 6R. Output. In this way, it is possible to prevent a situation in which both
environmental sounds are heard simultaneously and confused when the user and the interlocutor
are in conversation.
[0025]
FIG. 3 is a circuit and wiring diagram of an embodiment of the present invention. As shown in
FIG. 3, the audio input (right) 1R from the stereo input terminal and the input from the
environmental sound recording microphone 2R are connected to the headphone (right) 6R via
the mixed volume 4R. Further, the audio input (right) 1R from the stereo input terminal is
connected to the audio band checker 8, and the audio band checker 8 determines whether the
frequency of the audio input is only the audio band.
[0026]
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Similarly, the audio input (left) 1L from the stereo input terminal and the input from the
environmental sound recording microphone 2L are connected to the headphone (left) 6L via the
mixing volume 4L. The audio input (left) 1L is likewise connected to the audio band checker 8
and the frequency is determined.
[0027]
The audio band checker 8 is connected to the mixed volumes 4R and 4L and sends out volume
control signals to each of them. Further, the inputs from the environmental sound recording
microphones 2R and 2L are connected to the audio outputs (right / left) 7R and 7L via the
mixing volumes 5R and 5L, respectively. The input from the conversational microphone 3
(monaural) is connected to the audio output (right / left) 7R, 7L via the mixing volumes 5R, 5L.
[0028]
The boom position detector 9 of the movable boom 10 is connected to the mixing volumes 5R
and 5L, and sends out a volume control signal according to the angle of the conversation
microphone boom. FIG. 4 is an explanatory view of the use state regarding the headphone output
in the embodiment. In particular, FIG. 4 (A) shows the case where the frequency of the audio
input is only the voice band, and FIG. 4 (B) shows the frequency of the audio input other than the
voice band. An example of the included case is shown.
[0029]
When it is determined by the audio band checker 8 that the audio inputs 1R and 1L from the
stereo input terminal 24 are only the conversational voice of the other party, as shown in FIG. 4
(A), the audio input (right) 1R is The mixed volume 4R mixes the voice of the other party's voice
with the environmental sound (right) recorded by the environmental sound recording
microphone 2R, and sends it to the headphone (right) 6R. Similarly, the other party's speech of
audio input (left) 1L is mixed with its own environmental sound (left) recorded by the
microphone 2L for environmental sound recording, and is sent to the headphone (left) 6L.
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[0030]
On the other hand, when it is determined by the audio band checker 8 that the audio inputs 1R
and 1L from the stereo input terminal 24 include a sound other than the conversational sound of
the other party, as shown in FIG. Right) The mixed voice of the other party's voice and the other
party's environmental sound (right) is sent to the headphone (right) 6R as it is, and its own
environmental sound from the environmental sound recording microphone 2R is cut off.
Similarly, the audio input (left) mixed with the voice of the other party's voice and the other
party's environmental sound (left) is sent out as it is to the headphone (left) 6L, and its own
environmental sound from the environmental sound recording microphone 2L is Cut off.
[0031]
FIG. 5 is an explanatory view of the use state regarding the audio output in the embodiment, and
FIG. 5 (A) is a state where the conversation microphone boom (movable boom 10) is set at the
mouth, and FIG. 5 (B) is the conversation microphone boom FIG. 5 (C) shows an example of the
case where the conversation microphone boom is pushed up in a state in which the key is
depressed.
[0032]
When the movable boom 10 of the microphone 3 for conversation is at the set position, as shown
in FIG. 5A, regarding the volume ratio of the recording of the voice of the user and the
environment sound of the user, the voice of the user is maximum Mix at the volume ratio you
want.
Therefore, a signal in which the user's environmental sound (right) from the environmental
sound recording microphone 2R is reduced and the speech of the conversation microphone 3 is
mixed a lot is output from the stereo output terminal 25 as the audio output (right) 7R. .
Similarly, a signal in which the user's ambient sound (left) from the ambient sound recording
microphone 2L is reduced and the speech of the conversation microphone 3's own voice is mixed
is output from the stereo output terminal 25 as the audio output (left) 7L. Do.
[0033]
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When the movable boom 10 of the conversation microphone 3 is depressed, as shown in FIG. 5
(B), the movable boom of the voice of the user and the recording of the user's environment is the
movable boom. As the position of 10 falls, the mixing volumes 5R and 5L are controlled so that
their own environmental sounds are mixed at a large ratio. Therefore, a signal in which the
environmental sound from the environmental sound recording microphone 2R is more (right)
and the speech of the conversation microphone 3 is less mixed is output from the stereo output
terminal 25 as the audio output (right) 7R. . Similarly, the stereo output terminal 25 outputs an
audio output (left) 7 L as a signal obtained by mixing much of the user's environmental sound
(left) from the environmental sound recording microphone 2 L and lessing the voice of the
microphone 3 for conversation. Do.
[0034]
When the movable boom 10 of the conversation microphone 3 is at the highest OFF position,
both the conversation microphone 3 and the environmental sound recording microphones 2R
and 2L are turned off as shown in FIG. 5C. , Speech sounds and environmental sounds are not
input, and audio output is not performed.
[0035]
As described above, a uni-directional microphone is built in the left and right ear pads of the
closed-air headphones 6L and 6R or in the headband 21 to enable external environmental sound
to be recorded in stereo, and a conversation microphone with a boom 3 can realize a stereo
headset device capable of recording voice conversations.
In voice communication at a remote location, the presence of speech can be enhanced by mixing
and transmitting the ambient sound around the user along with the voice. Users of this device
can usually hear the environmental sound acquired at their own location, but if the interlocutor
can hear the environmental sound mixed voice, the specific gravity of the environmental sound
on their side decreases, and the sound space on the other side is remote It becomes possible to
listen in
[0036]
As described above, according to the present invention, it is possible to convey the atmosphere of
the place where the user is present as stereo sound as well as the conversational voice. Also, by
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interrupting the environmental sound of the place where you are in according to the situation, it
is possible to have a remote conversation with a sense of reality, so that external environmental
sounds in multiple places will not be heard confusingly when listening It becomes.
[0037]
Brief description of the drawings
[0038]
1 is an explanatory view of the principle of the present invention.
[0039]
2 is a diagram showing the appearance of the embodiment of the present invention.
[0040]
3 is a circuit and wiring diagram of an embodiment of the present invention.
[0041]
It is a utilization state explanatory view regarding the headphone output in the FIG. 4 Example.
[0042]
5 is an explanatory view of a use state regarding audio output in the embodiment of FIG.
[0043]
Explanation of sign
[0044]
DESCRIPTION OF SYMBOLS 1 audio signal input terminal 2 microphone for environmental
sound recording 3 microphone for conversation with a boom 4 mixed volume 5 mixed volume 6
ear speaker for audio presentation (headphones) 7 audio signal output terminal 8 audio band
checker 9 boom position detector 10 movable boom
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