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DESCRIPTION JP2007256606

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DESCRIPTION JP2007256606
[PROBLEMS] To provide a low-budget and simple system for protecting speech during a meeting
from outside. SOLUTION: When the speaking voice in a meeting is leaked to the next room, the
speaking voice in the meeting can be heard in the next room by outputting music such as BGM to
the next room at a volume higher than the leaked voice. To prevent. [Selected figure] Figure 2
Sound emission system
[0001]
The present invention relates to a sound output system, and more particularly to a sound output
system in which it is possible to make it difficult to listen to the contents of an indoor speech in
an adjacent room or the like with a simple system so as to protect the contents of speech.
[0002]
For example, when an important meeting is held, it is natural that it is not preferable that the
speech of a close room etc. is leaked because the contents of the meeting have many secret
matters.
However, it would be costly to introduce soundproofing equipment and noise reduction
equipment into the conference room.
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[0003]
On the other hand, it is not uncommon to play background music (hereinafter referred to as
"BGM"), which is said to be effective for improving work efficiency, in office buildings and the
like. Here, BGM is a concept that includes sounds such as river serpents and birds' singing.
[0004]
As a technique using such BGM, there is one adopted in a telephone system capable of
conference calls (see, for example, Patent Document 1).
[0005]
This is a system in which BGM is turned off when voice is detected in a conference call, and BGM
is flowed otherwise.
JP 2004-88211 A
[0006]
However, the technique of Patent Document 1 described above turns off BGM when it detects
speech, and does not protect the speaking voice during the conference from the outside.
However, there are many cases where it is not necessary to introduce soundproofing equipment
at a great cost.
[0007]
The object of the present invention is to provide a sound output system capable of simply
preventing the user from hearing the speech during a meeting or the like in the next room
without much capital investment such as introduction of soundproofing equipment. There is.
[0008]
In the present invention according to claim 1, sound collecting means for collecting a
predetermined room sound, sound outputting means installed in a space adjacent to the
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predetermined room, and sound data collected by the sound collecting means And a sound
output control unit configured to control a sound of a predetermined volume according to the
volume to be output from the sound output unit.
[0009]
According to a second aspect of the present invention, in the sound output system according to
the first aspect, the sound output from the sound output means is a music.
[0010]
In the sound output system according to claim 1 or 2, the sound output control means is
configured to make it difficult to hear the sound in the room based on the element of the
collected sound in the room. It is characterized in that sound is emitted from the sound output
means.
[0011]
In the sound output system according to any one of claims 1 to 3, in the present invention
according to claim 4, the sound output control means comprises wavelength detection means for
detecting the wavelength of the collected indoor sound. According to the detected wavelength, it
is characterized in that a sound which makes it difficult to hear the indoor sound is outputted
from the sound output means.
[0012]
According to the present invention, it is possible to make it difficult for a person outside the
room to hear indoor speech, etc., even with a simple system.
[0013]
The sound output system according to the present embodiment includes a sound collection unit
that collects a predetermined indoor sound, a sound output unit installed in a space adjacent to
the predetermined room, and sound data collected by the sound collection unit. And a sound
output control unit configured to control a sound of a predetermined volume according to the
volume of the sound output from the sound output unit.
[0014]
Here, the predetermined room corresponds to, for example, a meeting room in which there are
many cases where proceedings that you do not want to be informed by other than the meeting
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attendees often occur.
[0015]
Further, as the sound collection means, it is preferable to use a microphone which can efficiently
take in the sound in the room.
[0016]
In addition, as the sound output means, a speaker or the like installed in a general building may
be used.
[0017]
Further, as the sound output control means, a control circuit provided with a CPU, a ROM, a
RAM, a dedicated circuit for sound control, and the like can be considered.
Then, various types of sounds (including music and the like) are stored in the ROM.
[0018]
If the sound output system configured as described above is built in, for example, an office
building or the like, the sound in the conference room is taken in by a microphone, and the
volume according to the volume of the voice, that is, the sound according to the volume of the
audio in the conference room It is possible to make it difficult for the person outside the
conference room to hear even if voice leaks from the conference room, even if the voice leaks
from the conference room.
[0019]
Since such a system configuration is extremely simple, it can be realized without much cost, even
when it is adopted in a new building or in a case where it is constructed later in an existing
building.
[0020]
Further, in the sound output system configured as described above, the sound output from the
sound output means can be used as music.
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[0021]
That is, although it is difficult to hear the speaking voice in the meeting room, it can be made to
be so-called "BGM" by playing music, and the effect of improving the work efficiency of the
people outside the meeting room can also be expected.
[0022]
Further, in the sound output system described above, it is preferable that the sound output
control means outputs, from the sound output means, a sound that makes it difficult to listen to
the indoor sound based on the element of the collected indoor sound.
[0023]
That is, the speech collected by the microphone as the sound collecting means is analyzed, and
not only the volume but also the music such as BGM is changed to the up-tempo music according
to the tempo of the speech, or the frequency of the collected speech The sound in the conference
room is made more difficult to hear by, for example, selecting and emitting a sound (music)
whose frequency is as close as possible to the main frequency.
[0024]
Furthermore, in the sound output system described above, the sound output control means
includes wavelength detection means for detecting the wavelength of the collected indoor sound,
and the sound output that makes it difficult to hear the indoor sound according to the detected
wavelength is output. Sound can also be output from the sound means.
[0025]
Here, since a frequency can also be detected when detecting a wavelength, for example, among
sounds (voices) of various frequencies collected, the frequency of a sound having a large average
amplitude, that is, a frequency of a large voice While selecting the sound which approximates to,
it makes an opposite phase and outputs from sound output means.
This utilizes the phenomenon that the sound waveform is offset and the sound disappears.
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[0026]
Alternatively, the collected sound (speaking voice etc.) is synthesized to generate a synthesized
sound, and a sound or music approximate to the frequency of the synthesized sound is selected,
and the sound output means reverses the frequency of the selected sound. Can be output.
[0027]
Hereinafter, preferred embodiments of the present invention will be described more specifically
based on the drawings.
[Configuration of Sound Output System] FIG. 1 is an explanatory view showing a configuration of
a sound output system in the present embodiment, and in this case, a floor on which a
conference room A and a rest room B are juxtaposed is illustrated.
[0028]
As shown in FIG. 1, the sound output system according to the present embodiment includes a
sound collection microphone 1 as a sound collection unit according to the present invention, a
speaker 2 as a sound output unit, and sound collection from the sound collection microphone 1.
The sound output control device 3 performs control of outputting from the speaker 2 a sound of
a predetermined volume according to the volume obtained from the sound data.
[0029]
The sound collection microphone 1 is installed on the ceiling of the conference room A as shown
in the drawing, and the speaker 2 is installed on the ceiling of the rest room B of the adjacent
room.
Furthermore, according to the volume of audio data collected from the sound collection
microphone 1 installed in the conference room A, the speaker 2 installed in the break room B in
the next room emits music such as BGM at a predetermined volume. The sound output control
device 3 that performs control is connected to the sound collection microphone 1, the speaker 2,
and the wiring cable and the like, and is installed at an arbitrary place.
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[Outline of Sound Output System] The outline of sound output setting in the present embodiment
will be described with reference to FIG.
First, as shown in (a) of FIG. 2, in the left meeting room A, a meeting by several persons is held,
and in the right stop room B, a person unrelated to the meeting is having a chat etc. .
Here, when the conference held in the left meeting room A is heated, the voice volume naturally
becomes large, so the contents may be leaked to the resting room B on the right.
FIG. 2A shows that one person in the break room B on the right side notices a conversation in the
next room.
[0030]
Therefore, as shown in (b) of FIG. 2, when the sound output control device 3 detects that the
volume of the conference room A on the left side collected by the sound collection microphone 1
exceeds a certain fixed volume, the speaker For 2, the predetermined music (for example, BGM
etc.) is emitted at a predetermined volume.
As a result, the person in the rest room B on the right side is prevented from hearing about the
contents of the conversation in the meeting room A because the human voice leaked from the
meeting room A is not annoyed.
[0031]
Generally, the soundproofing effect changes depending on the difference in the structure
(wooden or reinforced concrete, etc.) of the building, the material of the wall and the shape of the
window and the door.
As shown in FIG. 2, the meeting room A and the rest room B are separated by walls, and although
a certain soundproofing effect can be expected, it can not be said that it is sufficient.
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If possible, it is desirable to assign a room suitable for soundproofing, especially for a conference
room, because of its confidentiality.
However, in reality, it is difficult to provide a dedicated conference room suitable for
soundproofing from the aspect of cost.
[0032]
Therefore, by providing the sound collecting microphone 1, the speaker 2, and the sound output
control device 3 for controlling the same as in the present embodiment, at least the contents of
the meeting can be prevented from being transmitted to the next room accurately. As it can be
done, it is not necessary to make a large-scale soundproofing work, etc., and it is cost-effective
and efficient.
[0033]
Although the soundproofing is not enough, the meeting room A and the rest room B are
separated by a wall (see FIG. 2), so that a certain level of soundproofing performance can be
expected.
Here, the soundproof performance (also referred to as sound insulation performance) can be
briefly described from the conference room A at a frequency of 500 Hz (this “Hz representing
the frequency of sound is the number of times of amplitude of sound repeated in one second. It
is.
In other words, a 500 Hz sound is a sound that performs 500 times a second.
If the sound insulation performance of the wall is 30 dB and the sound isolation performance of
the wall is 30 dB, the sound volume of 70 dB in the break room B is emitted when the sound
volume is 100 dB (this “dB” is generally a unit representing the loudness). Sounds will be
transmitted.
That is, assuming that the wall between the conference room A and the break room B has a
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sound insulation performance of 30 dB, even if the conference room A talks at a volume of less
than 30 dB, the break room B of the next room will sound Will not be transmitted.
[0034]
Therefore, in the present embodiment, the value of the sound insulation performance
(hereinafter referred to as sound insulation volume) is stored in advance in the sound output
control device 3, and the volume collected from the conference room A falls below the sound
insulation volume. In this case, the process of stopping the sound output to the break room B in
the next room is performed.
Therefore, it is possible to eliminate noise and reduce noise efficiently.
For example, assuming that the sound insulation volume stored in the sound control device 3 is
30 dB, the sound control device 3 determines that the volume of the collected speech in the
conference room A is less than 30 dB of the sound insulation volume. If this is the case, it is not
necessary to emit sound to the break room B in the next room.
Alternatively, even during the sound output, the sound output may be stopped or the volume
may be reduced.
[0035]
Furthermore, since the frequency of the voice emitted by human beings is 85 Hz to 1100 Hz, the
sound output control device 3 in the present embodiment is configured to include means capable
of analyzing not only the volume but also the frequency of the sound.
For example, even when the sound output control device 3 detects a sound volume of 30 dB or
more, which is the sound insulation volume, from the conference room A, when it is determined
that the frequency of the sound is not in the frequency band of the voice emitted by human
beings, By performing the process of stopping the sound output to the rest room B of the
adjacent room, the unnecessary sound output can be eliminated. [Electric Configuration of Sound
Output Control Device] Here, the control circuit 4 of the sound output control device 3 in the
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present embodiment will be described with reference to FIG. FIG. 3 is a block diagram showing
the control circuit 4 of the sound output control device 3 in the present embodiment.
[0036]
As shown in FIG. 3, the control circuit 4 of the sound output control device 3 according to the
present embodiment is a main CPU (Central Processing Unit, abbreviation for central processing
unit) 10 as a control means, a main ROM storing various programs ( A Read Only Memory, an
abbreviation for read only memory 11, and a main RAM (Random Access Memory, an
abbreviation for read / write memory) 12 having a function as identification information storage
means are provided. Functions as a control means across the network.
[0037]
As shown in FIG. 3, a main ROM 11 and a main RAM 12 are connected to the main CPU 10, and
the main CPU 10 has a function of executing various processes in accordance with a program
stored in the main ROM 11.
As described above, the main CPU 10 functions as various means, for example, functions as a
determination means of the volume collected by the sound collection microphone 1 and a sound
output means for outputting BGM or the like at a predetermined volume by the speaker 2 It will
be done.
[0038]
The main RAM 12 has a function of storing values of various flags and variables as a temporary
storage area of the main CPU 10.
[0039]
The control circuit 4 further includes a reset clock pulse generation circuit 15 that generates a
clock pulse of a predetermined frequency, and is connected to the main CPU 10.
The reset clock pulse generation circuit 15 generates a clock pulse every predetermined period
(for example, 2 milliseconds) in order to execute a system timer interrupt process described later.
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[0040]
Furthermore, various control circuits are connected to the main CPU 10. For example, the sound
input control circuit 13 and the sound output control circuit 14 are connected.
[0041]
The sound input control circuit 13 performs control to send the volume and frequency of the
sound collected by the sound collection microphone 1 to the main CPU 10 as sound data.
[0042]
The sound output control circuit 14 performs control to output various sounds such as BGM
from the speaker 2 at a predetermined volume from sound data supplied from the main CPU 10.
[0043]
In the present embodiment, the control circuit 4 is configured to use the main ROM 11 as
storage means for storing a program etc. However, the present invention is not limited to this
and it may be a computer-readable storage medium provided with control means. For example,
the program and the like may be recorded in a storage medium such as a hard disk drive and a
ROM cartridge.
Further, these programs may not be stored in advance, but may be downloaded after power on
and stored in the main RAM 12 or the like.
In the present embodiment, the main RAM 12 is used as a temporary storage area of the main
CPU 10. However, the present invention is not limited to this, and any other readable and
writable storage medium may be used. [Operation of Sound Output System] The processing
executed by the sound output control device 3 will be described below with reference to FIGS. 4
to 7. [Main Process] First, as shown in FIG. 4, the main CPU 10 executes an initial setting process
such as RAM access permission, backup recovery process, and work area initialization (step S11).
Then, sound output processing, which is the main function of the sound output system in the
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present embodiment, is executed (step S12). As described above, in the main processing, after the
initial setting processing in step S11 is completed, the processing in step S12 is repeatedly
executed. [System Timer Interruption Process] The main CPU 10 may interrupt the main process
and execute the system timer interruption process even when the main CPU 10 is executing the
main process. The following system timer interrupt processing is executed according to clock
pulses generated from the reset clock pulse generation circuit 15 at predetermined intervals (for
example, 2 milliseconds). The system timer interrupt process will be described with reference to
FIG.
[0044]
First, as shown in FIG. 5, in step S22, the main CPU 10 selects the frequency and volume of the
sound collected by the sound collection microphone 1 and sent from the sound input control
circuit 13 in a predetermined area of the main RAM 12 Remember to
[0045]
Next, in step S23, the main CPU 10 monitors various timers stored in a predetermined area of the
main RAM 12 (for example, although the details will be described later, in the sound output
processing of FIG. The timer and the sound output stop monitoring timer, etc., are stored and
updated every time an interrupt is generated (for example, 2 milliseconds).
[0046]
Then, in step S24, the main CPU 10 performs a process of outputting sound data to the sound
output control circuit 14 in accordance with an output request of the sound data stored in a
predetermined area of the main RAM 12.
Thus, music such as BGM having a predetermined volume is output from the speaker 2.
Here, the sound data output to the sound output control circuit 14 is determined by the sound
output process to be executed in step S12 (see FIG. 4) of the main process, which will be
described later in detail, for example. Are stored as sound data. When this process ends, the
present subroutine ends, the address before the occurrence of the interrupt is restored, and the
main process is executed. [Sound Output Processing] The sound output processing performed in
step S12 of FIG. 4 will be described with reference to FIG.
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[0047]
In step S31, the main CPU 10 determines whether or not there is an input of sound from the
sound collection microphone 1. Furthermore, the main CPU 10 determines the frequency of the
sound input from the sound collection microphone 1, and shifts the process to step S32 when the
frequency is in the frequency band of human voice (85 Hz to 1100 Hz). On the other hand, when
there is no input of sound or when the main CPU 10 determines that the input sound is not
human voice, the process proceeds to step S34. In step S32, the main CPU 10 stores the volume
of the sound input from the sound collection microphone 1 in a predetermined area of the main
RAM 12 as an input volume, and then shifts the processing to step 33.
[0048]
In step S33, the main CPU 10 compares the input sound volume stored in step S32 with the
preset sound insulation volume (volume naturally isolated by a wall provided between the rooms,
etc.) If the volume is higher than the sound insulation volume, the process proceeds to step S38.
If not, the process proceeds to step S34. That is, in this process, the main CPU 10 compares the
input sound volume with the sound insulation volume, and checks whether the sound volume of
the sound detected by the sound collection microphone 1 leaks to the next room.
[0049]
In step S34, main CPU 10 determines whether or not there is a sound output stop monitoring
request. If there is a sound output stop monitoring request, the process proceeds to step S43. If
not, the current is processed in step S35. It is determined from the speaker 2 whether or not
music such as BGM is being output. If the sound is not being output, this subroutine is ended. On
the other hand, when the sound is being output, the main CPU 10 sets the sound output stop
monitoring request in the process of step S36, and further waits for the sound output stop
monitoring timer to stop the sound output in the process of step S37. The setting (for example, 3
seconds) is set and stored in a predetermined area of the main RAM 12, and this subroutine is
ended.
[0050]
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In step S43, the main CPU 10 checks whether or not the sound output stop monitoring timer has
timed out (that is, has it become "0"), and when the time has not timed out, this subroutine is
ended. On the other hand, when the time is up, in the process of step S44, the main CPU 10
stores the sound output stop request from the speaker 2 in a predetermined area of the main
RAM 12, and ends the present subroutine. The sound output stop request from the speaker 2
stored in the main RAM 12 in step S44 is output from the main CPU 10 to the sound output
control circuit 14 in the output process of step S24 (see FIG. 5) of the system timer interrupt
process. The sound output in 2 will be stopped.
[0051]
In step S38, main CPU 10 determines whether or not there is a sound output start monitoring
request. If there is no sound output start monitoring request, the process proceeds to step S39. If
there is a sound output start monitoring request, the process proceeds to step S45. Move.
[0052]
In step S39, the main CPU 10 checks whether sound is currently being output from the speaker 2
or not. If not, the process proceeds to step S41.
On the other hand, if the sound is being output, the main CPU 10 checks in step S40 whether the
input volume from the sound collection microphone 1 has changed. If it is determined that there
is a change in the input volume, the process proceeds to step S41. If it is determined that there is
no change in the input volume, the present subroutine ends.
[0053]
In step S41, main CPU 10 sets a sound output start monitoring request, and next, in step S42,
sets a waiting time (for example, 3 seconds) until sound output is started to the sound output
start monitoring timer, and main RAM 12 The present subroutine is stored in a predetermined
area of
[0054]
In step S45, the main CPU 10 checks whether or not the sound output start monitoring timer has
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timed out (that is, "0"), and if the time has not timed out, the present subroutine ends.
On the other hand, when the time is up, in the process of step S46, the main CPU 10 performs an
operation to determine the sound output volume for sound output from the speaker 2. First, the
main CPU 10 subtracts the sound insulation volume from the input sound volume input by the
sound collection microphone 1, and with respect to the difference thereof, the ratio of the
speaker 2 at a predetermined numerical value (the value obtained by subtracting the sound
insulation volume from the input sound volume A product with the value to determine whether
to increase the volume of BGM or the like to be output is calculated. For example, assuming that
the input volume is "40 dB", the sound insulation volume is "20 dB", and the predetermined value
is "1.05", the required output volume is [(40-20) × 1.05 = 21], which is 21 dB. The output
volume of is determined. That is, in the present embodiment, as shown in FIG. 2, music such as
BGM is emitted from the speaker 2 to the rest room B at a volume slightly larger than the volume
transmitted from the meeting room A to the rest room B. It will be done. Then, the determined
sound output volume is stored in a predetermined area of the main RAM 12, and the process
proceeds to step S47.
[0055]
In step S47, the main CPU 10 determines sound data to be output from the speaker 2 (see (b) of
FIG. 2) of the break room B. In the present embodiment, main CPU 10 determines sound data
with reference to the sound selection table of FIG. 7 according to the output sound volume
determined in step S46. Specifically, when the main CPU 10 determines the sound output volume
21 dB in step S46, the main CPU 10 selects the sound data S3 by referring to the sound selection
table of FIG. Then, the sound data determined here is stored in a predetermined area of the main
RAM 12, and the present subroutine is ended. In the present embodiment, in the processing of
step S47, output to the rest room B (see FIG. 2) of the adjacent room. A plurality of sound data
(see FIG. 7) to be output is prepared in accordance with the sound output volume. That is, when
the volume in the conference room A is raised, not only the volume of music such as a
predetermined BGM is raised and output, but also the music such as BGM is also changed to the
up-tempo music etc. Will be done. As a result, it can be expected that the sound leaked from the
meeting room A to the rest room B in the next room can be more surely prevented from being
heard by another person.
[0056]
Then, the sound data such as the sound output volume and the BGM determined in step S46 or
step S47 and stored in the main RAM 12 is sounded from the main CPU 10 in the output process
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of step S24 (see FIG. 5) of the system timer interrupt process. The sound is output to the output
control circuit 14 and output from the speaker 2 (see FIG. 2) of the rest room B at a
predetermined volume as music such as BGM.
[0057]
Furthermore, in the present embodiment, music such as BGM output as an obstacle to listening
from the speaker 2 uses the sound in this frequency band with reference to the frequency band
of human voice (85 Hz to 1100 Hz). It is assumed that the music configured as described above
is used, and the output timing is output at the timing opposite to the frequency of the sound
input from the sound collection microphone 1.
Due to this, when so-called active muffling (this active muffling is superimposed on the waveform
of a sound, the waveform of that sound is turned upside down), the waveform of the sound is
canceled by the principle of superposition and the sound disappears Because it is possible to aim
at the effect of (a means of muffling using the phenomenon of), it is possible to make it more
difficult to hear speech such as speech more reliably.
[0058]
As described above, in the sound output processing (see FIG. 6) executed in the sound output
control device 3 according to the present embodiment, as shown in FIG. The sound is collected by
the sound collection microphone 1 and it is judged whether or not the volume leaks to the rest
room B in the next room, and when it is judged that it leaks to the rest room B, the speaker 2
installed in the rest room B The music such as BGM is output at a predetermined volume in
consideration of the soundproof performance (sound insulation performance) of the above.
Further, the volume of music such as BGM output from the speaker 2 of the break room B
follows the change of the volume during the conference collected by the sound collection
microphone 1 of the conference room A. For example, in the sound output control device 3, when
it is determined that the volume of the conference room A is increased, the volume of music such
as BGM output from the speaker 2 of the rest room B is also increased. By using means for
changing music such as BGM according to the volume, the voice during the meeting being held in
the meeting room A can be more surely heard by the other person in the next break room B The
effect of preventing
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[0059]
In the present embodiment, as shown in FIG. 2, the sound volume of the sound output from the
speaker 2 in the break room B in the next room, the sound data of music such as BGM, etc. is
data that becomes a predetermined sound insulation volume. Is registered as internal data of the
sound output control device 3, but the transmission of sound is so subtle as to be influenced by
the weather of the day, such as temperature and humidity. Furthermore, even if it is a
conversation in a meeting in general, the characteristic will differ by the person who comprises
the meeting. For example, males generally have lower frequencies in voice than females, and lowfrequency sounds are easier to transmit. Therefore, BGM and the like emitted from the speaker 2
of the break room B based on the volume of the sound of the conference room A collected by the
sound collection microphone 1 and the sound insulation volume set inside the sound output
control device 3 In the present embodiment in which the volume of the music is determined, it is
possible that the efficient sound insulation effect can not be obtained. Therefore, it may be coped
with by setting the volume of the sound output from the speaker 2 to be larger.
[0060]
Also, for example, volume sensing means capable of measuring the volume or frequency of the
sound leaking from the conference room A is additionally installed near the wall of the break
room B in the next room, and the volume actually outputted from the speaker 2 is It may be
determined based on the volume data added from the volume sensing means. In this case, the
effect of preventing the leakage of the conversation from the conference room A is more surely
enhanced.
[0061]
Furthermore, the volume sensing means installed in the break room B analyzes the frequency of
the voice from the conference room A which is actually leaking into the break room B, and for
example, the above-mentioned active to the voice with the highest volume frequency. If the voice
of the same frequency is outputted from the speaker 2 of the break room B at the opposite phase
timing aiming at the effect of muffling, people who are in the break room B hear the leak of the
conversation from the conference room A Can be more effectively prevented.
[0062]
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The arrangement of the sound collection microphone 1, the speaker 2, and the sound output
control device 3 (see FIG. 1) installed in the present embodiment is not limited to this.
In particular, the arrangement of the speakers 2 can be appropriately changed in consideration
of the shape of the room, the sound effect, and the like.
[0063]
Further, in the present embodiment, the number of installed sound collecting microphones 1 and
the number of speakers 2 are not particularly limited as long as they are more in line with the
object of the present invention.
[0064]
As mentioned above, although the Example of this invention was described, it only illustrated the
specific example and does not limit this invention in particular.
That is, according to the present invention, mainly, sound collecting means for collecting the
sound of a predetermined room, sound outputting means installed in a space adjacent to the
predetermined room, and sound data collected by the sound collecting means Although the
system is constituted by a sound output control means for controlling a sound of a
predetermined volume according to the volume to be emitted from the sound output means, the
specific configuration of each of the means etc. can be appropriately changed in design is there.
[0065]
The effects described in the examples of the present invention merely list the most preferable
effects arising from the present invention, and the effects according to the present invention are
limited to those described in the examples of the present invention. is not.
[0066]
It is a figure which shows the outline of the sound output system of one Embodiment of this
invention.
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It is a figure which shows the flow of the sound output system of one Embodiment of this
invention. It is a block diagram which shows the control circuit comprised in the sound output
system of one Embodiment of this invention. It is a flowchart which shows the control processing
performed in the sound output system of one Embodiment of this invention. It is a flowchart
which shows the control processing performed in the sound output system of one Embodiment
of this invention. It is a flowchart which shows the control processing performed in the sound
output system of one Embodiment of this invention. It is a sound data selection table referred in
the sound output system of one embodiment of the present invention.
Explanation of sign
[0067]
DESCRIPTION OF SYMBOLS 1 sound collection microphone 2 speaker 3 sound output control
apparatus 4 control circuit 10 main CPU 11 main ROM 12 main RAM 13 sound input control
circuit 14 sound output control circuit 15 clock pulse generation circuit
10-04-2019
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