JP4910649B2 - Notification device and masking device - Google Patents

Description

  The present invention relates to a technique for notifying leakage of sound from room to room.

  In a conference room or apartment house where a plurality of rooms are adjacent to each other across a wall or floor, if the sound in the room is loud, the sound transmitted through the wall may cause discomfort to the person in the adjacent room. Therefore, an apparatus disclosed in Patent Document 1 has been devised as an apparatus for preventing the person in the adjacent room from feeling uncomfortable. The apparatus disclosed in Patent Document 1 measures the sound pressure of sound in a room with a sound pressure sensor provided in the room, and determines the level of transmitted sound transmitted to the adjacent room based on the sound insulation performance of the wall. calculate. When the calculated level exceeds a predetermined level, it is noted that sound is leaking to the adjacent room by issuing an alarm from the alarm device.

JP-A-8-233648

By the way, the transmitted sound transmitted to the adjacent room may be audible or difficult to hear in the adjacent room depending on the level of the background noise such as the sound of the air conditioning equipment in the adjacent room and the sound generated by the electric equipment. Specifically, if the level of background noise in the adjacent room is greater than the level of transmitted sound, the person who is in the adjacent room becomes difficult to hear the transmitted sound due to the high level of background noise. The sound from the next room does not feel uncomfortable. On the other hand, if the background noise level in the adjacent room is lower than the transmitted sound level, even if the transmitted sound level is the same, the person in the adjacent room will hear a transmitted sound with a high level, and the sound from the adjacent room will be heard. You will feel uncomfortable.
Thus, whether or not the person in the adjacent room feels the transmitted sound uncomfortable depends not only on the level of the transmitted sound but also on the level of the background noise in the adjacent room. However, in the conventional technology, an alarm is issued depending on the level of the transmitted sound, so the transmitted sound is not heard by the person in the adjacent room due to the level of background noise in the adjacent room, and the person in the adjacent room is uncomfortable. Even if you do not feel it, an alarm will be issued. Even if no alarm is issued, the transmitted noise is heard by the person in the adjacent room due to the low background noise level in the adjacent room, and the person in the adjacent room may feel uncomfortable.

  The present invention has been made under the above-described background, and an object thereof is to provide a technique for informing a person in a neighboring room how to hear a transmitted sound.

In order to solve the above-mentioned problems, the present invention collects sound in the first room, outputs first audio signal representing the collected sound, and sounds in the second room. A second sound collecting means for collecting and outputting a second audio signal representing the collected sound; obtaining a first sound pressure of the sound in the first room based on the first audio signal; and Sound pressure analysis means for obtaining a second sound pressure of the sound in the second room based on the signal, the first sound pressure, and sound insulation information relating to sound insulation performance between the first room and the second room. Based on the transmitted sound analyzing means for obtaining the third sound pressure after the sound represented by the first audio signal is transmitted to the second room, the operation element disposed in the second room, and the operation element changes in, changing the criterion is a value to be added to the second sound pressure according to the been operated And stage, based on the changed criterion in the changing means, determination means for determining the relationship between the result of adding the criteria to the second sound pressure and the third sound pressure, the first room and Provided is a notifying device provided in the second room and having a notifying means for notifying a judgment result of the judging means.
Further, the present invention collects sound in the first room and outputs a first audio signal representing the collected sound, and collects and picks up the sound in the second room. Second sound collecting means for outputting a second audio signal representing sound; and a first sound pressure of the sound in the first room based on the first audio signal; and the second sound signal based on the second audio signal. Based on sound pressure analysis means for obtaining a second sound pressure of the sound in the room, the first sound pressure, and sound insulation information relating to sound insulation performance between the first room and the second room, the first audio. A transmitted sound analyzing means for obtaining a third sound pressure after transmission of the sound represented by the signal into the second room, an operation element disposed in the first room, and an operation performed on the operation element and changing means for changing the value at which criterion to be added to the second sound pressure, varying in the changing means On the basis of the criteria, and determining means for determining the relationship between the result of adding the criteria to the second sound pressure and the third sound pressure, provided in the first room, the determination of the determination unit Provided is a notifying device having notifying means for notifying a result.

The notification device includes a masking sound signal output unit that outputs a masking sound signal according to a determination result of the determination unit, and a masking sound signal that is disposed in the second room and that is output from the masking sound signal output unit. Sound output means for outputting a masking sound.
In this notification device, the masking sound signal output means may change the sound pressure of the masking sound according to the determination result of the determination means.
Further, the present invention collects sound in the first room and outputs a first audio signal representing the collected sound, and collects and picks up the sound in the second room. Second sound collecting means for outputting a second audio signal representing sound; and a first sound pressure of the sound in the first room based on the first audio signal; and the second sound signal based on the second audio signal. Based on sound pressure analysis means for obtaining a second sound pressure of the sound in the room, the first sound pressure, and sound insulation information relating to sound insulation performance between the first room and the second room, the first audio. A transmitted sound analyzing means for obtaining a third sound pressure after transmission of the sound represented by the signal into the second room, an operation element disposed in the second room, and an operation performed on the operation element and changing means for changing the value at which criterion to be added to the second sound pressure, varying in the changing means On the basis of the criteria, and determining means for determining the relationship between the result of adding the criteria to the second sound pressure and the third sound pressure, provided in the first room and the second room, An informing means for informing the judgment result of the judgment means, a masking sound signal output means for outputting a masking sound signal according to the judgment result of the judgment means, and a masking sound signal output means arranged in the second room. There is provided a masking device having sound output means for outputting a masking sound in accordance with an output masking sound signal.
Further, the present invention collects sound in the first room and outputs a first audio signal representing the collected sound, and collects and picks up the sound in the second room. Second sound collecting means for outputting a second audio signal representing sound; and a first sound pressure of the sound in the first room based on the first audio signal; and the second sound signal based on the second audio signal. Based on sound pressure analysis means for obtaining a second sound pressure of the sound in the room, the first sound pressure, and sound insulation information relating to sound insulation performance between the first room and the second room, the first audio. A transmitted sound analyzing means for obtaining a third sound pressure after transmission of the sound represented by the signal into the second room, an operation element disposed in the first room, and an operation performed on the operation element and changing means for changing the value at which criterion to be added to the second sound pressure, varying in the changing means On the basis of the criteria, and determining means for determining the relationship between the result of adding the criteria to the second sound pressure and the third sound pressure, provided in the first room, the determination of the determination unit An informing means for informing the result, a masking sound signal output means for outputting a masking sound signal according to the judgment result of the judgment means, and a masking sound arranged in the second room and outputted from the masking sound signal output means There is provided a masking device having sound output means for outputting a masking sound in response to a signal.

  According to the present invention, it is possible to notify the person in the adjacent room how to hear the transmitted sound.

[Configuration of the embodiment]
First, the structure of the alerting | reporting system 1 which concerns on one Embodiment of this invention is demonstrated. FIG. 1 is a diagram schematically illustrating the overall configuration of the notification system 1 and a room in which the notification system 1 is arranged. In the figure, a room RA and a room RB are partitioned by a field wall C having a predetermined sound insulation performance. The notification system 1 includes a notification device 10, microphones 20A and 20B connected to the notification device 10, and display devices 30A and 30B connected to the notification device 10, and the microphones 20A and 20B are used to control the room RA and the room RB. This is a system that collects sound and notifies the person in the adjacent room how the transmitted sound generated in the room and transmitted through the wall C is heard.

  The microphone 20 </ b> A is installed in the room RA, collects sound in the room RA, and outputs an audio signal representing the collected sound to the notification device 10. The microphone 20B is installed in the room RB, collects sound in the room RB, and outputs an audio signal representing the collected sound to the notification device 10.

  The display device 30A is installed in the room RA, and is a device for informing how the transmitted sound that has passed through the wall C from the room RA and reached the room RB is heard in the room RB. Further, the display device 30B is installed in the room RB, and is a device for informing how the transmitted sound that has passed through the wall C from the room RB and reached the room RA is heard in the room RA. As shown in FIG. 1, the display device 30A includes a blue indicator lamp 31A, a yellow indicator lamp 32A, and a red indicator lamp 33A, and the display device 30B includes a blue indicator lamp 31B and a yellow indicator lamp. The lamp 32B and the red indicator lamp 33B are provided. The display devices 30 </ b> A and 30 </ b> B are lit according to a signal supplied from the notification device 10.

  Next, the configuration of the notification device 10 will be described. FIG. 2 is a block diagram illustrating a hardware configuration of the notification device 10. The notification device 10 includes a power source (not shown), and each unit of the notification device 10 operates with electric power supplied from the power source. Further, each unit of the notification device 10 is connected to the bus 101 as shown in the figure, and various signals and data are exchanged between the units via the bus 101.

The signal input unit 106 is connected to the microphones 20A and 20B, and receives audio signals output from the microphones 20A and 20B. The signal input unit 106 analyzes the input audio signal to determine the sound pressure level of the sound represented by the audio signal, and supplies sound pressure data indicating the calculated sound pressure level to a CPU (Central Processing Unit) 102.
The signal output unit 107 is connected to the display devices 30A and 30B, and outputs a signal for turning on the display lamps included in the display devices 30A and 30B to the display devices 30A and 30B under the control of the CPU 102.

  The storage unit 105 includes a nonvolatile memory that stores various data. The storage unit 105 stores sound insulation performance data indicating how much the sound pressure level of the sound is reduced before and after transmission through the wall C when the sound passes through the wall C. Specifically, as the sound insulation performance data (sound insulation information), a sound insulation grade representing the sound insulation performance of the wall C (JIS 1419-1: Evaluation method of sound insulation performance of buildings and building members Part 1: Air sound insulation performance), so-called The value of D grade (hereinafter referred to as D value) is stored. For example, when the value of the D value of the boundary wall C is “a”, when sound passes through the boundary wall C, the sound pressure level of 500 [Hz] of the transmitted sound decreases by a [dB].

  A ROM (Read Only Memory) 103 stores a control program executed by the CPU 102. The CPU 102 reads out a control program stored in the ROM 103 and executes the control program using a RAM (Random Access Memory) 104 as a work area. When the control program is executed by the CPU 102, each part of the notification device 10 is controlled by the CPU 102. In the notification device 10 in which the control program is executed, the sound of the room RA and the room RB is collected by the microphones 20A and 20B, and the sound generated in the room and transmitted through the wall C is in the next room. A function to notify how it sounds is realized.

[Operation of the embodiment]
(Operation when sound in rooms RA and RB is only background noise)
First, the operation of the notification system 1 when the sound in the rooms RA and RB is only background noise will be described. First, when power is supplied to each part of the notification device 10 from a power source (not shown), the CPU 102 executes a control program stored in the ROM 103. The microphone 20A picks up the sound of the room RA and outputs an audio signal, and the microphone 20B picks up the sound of the room RB and outputs the audio signal. Here, since the sound in room RA and room RB is only background noise, an audio signal representing background noise in room RA is output from microphone 20A, and an audio signal representing background noise in room RB is output from microphone 20B. .

  When this audio signal is input to the signal input unit 106, the signal input unit 106 analyzes the input audio signal, and from the sound pressure level A of the sound represented by the audio signal supplied from the microphone 20A and the microphone 20B. The sound pressure level B of the sound represented by the supplied audio signal is obtained. Then, the signal input unit 106 supplies the CPU 102 with sound pressure data D1 representing the obtained sound pressure level A and sound pressure data D2 representing the sound pressure level B.

  When the sound pressure data is supplied, the CPU 102 obtains the sound pressure level A1 of the transmitted sound transmitted from the room RA to the room RB and the sound pressure level B1 of the transmitted sound transmitted from the room RB to the room RA. Specifically, the CPU 102 first reads the D value stored in the storage unit 105, and subtracts the value of the D value from the sound pressure level represented by the sound pressure data D1, thereby transmitting from the room RA to the room RB. The sound pressure level A1 of the transmitted sound is obtained, and then the value of the D value is subtracted from the sound pressure level represented by the sound pressure data D2, thereby obtaining the sound pressure level B1 of the transmitted sound transmitted from the room RB to the room RA. Ask.

Thereafter, the CPU 102 compares the sound pressure level B with the sound pressure level A1. Here, when the sound pressure level A1 is smaller than the sound pressure level B (when the sound pressure level of the transmitted sound transmitted through the wall C from the room RA is smaller than the sound pressure level of the background noise in the room RB), the CPU 102 The signal output unit 107 is controlled to output a signal for lighting only the display lamp 31A of the display device 30A from the signal output unit 107 to the display device 30A. When this signal is input to the display device 30A, the display device 30A turns on only the blue indicator lamp 31A according to the input signal.
Further, the CPU 102 compares the sound pressure level A with the sound pressure level B1. Here, when the sound pressure level B1 is smaller than the sound pressure level A (when the sound pressure level of the transmitted sound transmitted through the wall C from the room RB is smaller than the sound pressure level of the background noise in the room RA), the CPU 102 The signal output unit 107 is controlled, and a signal for lighting only the display lamp 31B of the display device 30B is output from the signal output unit 107 to the display device 30B. When this signal is input to the display device 30B, the display device 30B turns on only the blue indicator lamp 31B according to the input signal.

  When the sound pressure level of the transmitted sound that has passed through the wall C from the room RA is smaller than the sound pressure level of the background noise in the room RB, the blue indicator lamp 31A, that is, the sound of the room RA is heard by the person in the room RB. Since it lights up when it cannot be heard, the person in the room RA can know that the sound in the room is not heard in the room RB in the adjacent room. Further, the blue indicator lamp 31B is used when the sound pressure level of the transmitted sound transmitted through the field wall C from the room RB is smaller than the sound pressure level of the background noise in the room RA, that is, for the person in the room RA. Since the light is turned on when no sound is heard, the person in the room RB can know that the sound in the room is not heard in the room RA in the adjacent room.

(Operation when the sound pressure level of conversation in the room RA changes)
Next, the operation when the sound pressure level of background noise in the rooms RA and RB is constant and the sound pressure level of the sound in the room RA changes will be described. First, when a person in the room RA performs a conversation while the indicator lamps 31A and 31B are lit, the voice of the conversation is collected by the microphone 20A, and an audio signal representing the collected sound is output. . Here, since no conversation is performed in the room RB, only the background noise of the room RB is collected in the microphone 20B, and an audio signal representing the collected background noise is output.

  When the audio signal output from each microphone is input to the signal input unit 106, the signal input unit 106 collects the sound pressure data D1 representing the sound pressure level A of the sound collected by the microphone 20A and the microphone 20B. The sound pressure data D2 representing the sound pressure level B of the sound that has been sounded is supplied to the CPU 102.

  When the sound pressure data D1 and D2 are supplied, the CPU 102 obtains the sound pressure level A1 of the transmitted sound transmitted from the room RA to the room RB and the sound pressure level B1 of the transmitted sound transmitted from the room RB to the room RA. Ask. Then, the CPU 102 compares the sound pressure level B with the sound pressure level A1. Here, the CPU 102 increases the sound pressure level of the sound in the room RA due to the conversation in the room RA, and accordingly, the sound pressure level A1 of the transmitted sound transmitted from the room RA to the room RB is When the sound pressure level B is equal to or higher than the sound pressure level B of the background noise of RB, it is determined whether the sound pressure level A1 is less than the sound pressure level B + 6 [dB]. Here, when the sound pressure level A1 is less than the sound pressure level B + 6 [dB], the transmitted sound transmitted from the room RA to the room RB can be heard by a person in the room RB. Therefore, the CPU 102 controls the signal output unit 107 to light only the display lamp 32A of the display device 30A in order to notify the person in the room RA that the sound in the own room is heard by the person in the adjacent room. A signal is output from the signal output unit 107. When this signal is input to the display device 30A, the display device 30A turns on only the yellow indicator lamp 32A according to the input signal. The person in the room RA can know that the person in the room RB can hear the conversation voice in the room RB because the indicator light lit in the display device 30A is a yellow indicator light.

  Thereafter, when the voice of the conversation in the room RA increases, the voice of the conversation is picked up by the microphone 20A, and an audio signal representing the picked-up sound is output. Here, since no conversation is performed in the room RB, only the background noise of the room RB is collected in the microphone 20B, and an audio signal representing the collected background noise is output. In the signal input unit 106 to which each audio signal is input, sound pressure data D1 representing the sound pressure level A of the sound collected by the microphone 20A and the sound pressure level B of the sound collected by the microphone 20B. Is output to the CPU 102.

  When the sound pressure data D1 and D2 are supplied, the CPU 102 obtains the sound pressure level A1 of the transmitted sound transmitted from the room RA to the room RB and the sound pressure level B1 of the transmitted sound transmitted from the room RB to the room RA. Ask. Then, the CPU 102 compares the sound pressure level B with the sound pressure level A1. Here, the voice of the conversation conducted in the room RA becomes louder, and the sound pressure level A1 of the transmitted sound transmitted from the room RA to the room RB is 6 dB or higher than the sound pressure level B of background noise in the room RB. If it is larger, the person in the room RB can clearly hear the transmitted sound transmitted from the room RA to the room RB, and can grasp the contents of the conversation in the room RA. Therefore, the CPU 102 controls the signal output unit 107 to turn on only the display lamp 33A of the display device 30A in order to notify the person in the room RA that the sound in the room is clearly audible to the person in the adjacent room. For this purpose is output from the signal output unit 107. When this signal is input to the display device 30A, the display device 30A turns on only the red indicator lamp 33A according to the input signal. The person in the room RA can know that the conversation sound in the room is clearly audible to the person in the adjacent room RB because the indicator light lit in the display device 30A is a red indicator light. it can.

(Operation when the loudness of conversation voice in room RA is suppressed)
If the person in room RA knows that the conversational voice in the room is clearly audible to the person in room RB because the red indicator light is lit, and the conversation voice is reduced, The sound is picked up by the microphone 20A and an audio signal is output. In the signal input unit 106, the sound pressure data D1 indicating the sound pressure level A of the sound picked up by the microphone 20A and the sound picked up by the microphone 20B are displayed. Sound pressure data D2 representing the sound pressure level B is output to the CPU 102.

  When the sound pressure data D1 and D2 are supplied, the CPU 102 obtains the sound pressure level A1 of the transmitted sound transmitted from the room RA to the room RB and the sound pressure level B1 of the transmitted sound transmitted from the room RB to the room RA. Ask. Then, the CPU 102 compares the sound pressure level B with the sound pressure level A1. Here, when the voice of the conversation conducted in the room RA is reduced, the sound pressure level A1 of the transmitted sound transmitted from the room RA to the room RB is less than the sound pressure level B of the background noise in the room RB. A person in the room RB cannot hear the transmitted sound transmitted from the room RA to the room RB. Therefore, the CPU 102 controls the signal output unit 107 to turn on only the indicator lamp 31A of the display device 30A in order to notify the person in the room RA that the sound in the own room is not heard by the person in the adjacent room. A signal is output from the signal output unit 107. When this signal is input to the display device 30A, the display device 30A turns on only the blue indicator lamp 31A according to the input signal. A person in the room RA can know that the conversation voice in the room RB is not heard by the person in the adjacent room RB because the indicator light lit in the display device 30A is a blue indicator light.

(Operation when the sound pressure level of background noise in the adjacent room increases)
Next, an operation when the sound pressure level of the background noise in the room RB is increased while the yellow indicator lamp is lit in the room RA will be described.
First, in the room RA, a conversation is performed by a person in the room RA, the voice of the conversation is collected by the microphone 20A, and an audio signal representing the collected sound is output from the microphone 20A. Here, in the room RB, for example, when the background noise increases due to the operation of the air conditioning equipment, the background noise increased in the room RB is collected by the microphone 20B, and an audio signal representing the collected background noise is collected. Is output from the microphone 20B. In the signal input unit 106 to which each audio signal is input, sound pressure data D1 representing the sound pressure level A of the sound collected by the microphone 20A and the sound pressure level B of the sound collected by the microphone 20B. Is output to the CPU 102.

  When the sound pressure data D1 and D2 are supplied, the CPU 102 obtains the sound pressure level A1 of the transmitted sound transmitted from the room RA to the room RB and the sound pressure level B1 of the transmitted sound transmitted from the room RB to the room RA. Then, the CPU 102 compares the sound pressure level B with the sound pressure level A1. Although the sound pressure level of the voice of the conversation conducted in the room RA has not changed, the sound pressure level of the background noise in the room RB has increased, and the sound pressure level of the transmitted sound transmitted from the room RA to the room RB. When A1 is lower than the sound pressure level B of the background noise in the room RB, the person in the room RB has a sound pressure level of the background noise higher than the sound pressure level of the transmitted sound. The transmitted sound transmitted to the RB cannot be heard. Therefore, the CPU 102 controls the signal output unit 107 to turn on only the indicator lamp 31A of the display device 30A in order to notify the person in the room RA that the sound in the own room is not heard by the person in the adjacent room. A signal is output from the signal output unit 107. When this signal is input to the display device 30A, the display device 30A turns on only the blue indicator lamp 31A according to the input signal. A person in the room RA can know that the conversation voice in the room RB is not heard by the person in the adjacent room RB because the indicator light lit in the display device 30A is a blue indicator light.

(Operation when the background noise level in the adjacent room decreases)
Next, an operation when the sound pressure level of the background noise in the room RB is reduced in a state where the yellow indicator lamp is lit in the room RA will be described.
First, in the room RA, a conversation is performed by a person in the room RA, the voice of the conversation is collected by the microphone 20A, and an audio signal representing the collected sound is output from the microphone 20A. Here, in the room RB, for example, the background noise is reduced by stopping the air conditioning equipment or stopping the electrical equipment. The reduced background noise is collected by the microphone 20B, and an audio signal representing the collected background noise is output from the microphone 20B. In the signal input unit 106 to which each audio signal is input, sound pressure data D1 representing the sound pressure level A of the sound collected by the microphone 20A and the sound pressure level B of the sound collected by the microphone 20B. Is output to the CPU 102.

  When the sound pressure data D1 and D2 are supplied, the CPU 102 obtains the sound pressure level A1 of the transmitted sound transmitted from the room RA to the room RB and the sound pressure level B1 of the transmitted sound transmitted from the room RB to the room RA. Then, the CPU 102 compares the sound pressure level B with the sound pressure level A1. Here, the sound pressure level of the voice of the conversation conducted in the room RA has not changed, but the sound pressure level of the background noise in the room RB is small. When the sound pressure level A1 of the transmitted sound transmitted from the room RA to the room RB is relatively higher than the sound pressure level B + 6 [dB] of the background noise of the room RB, a person in the room RB The transmitted sound transmitted to the room RB can be clearly heard. Therefore, the CPU 102 controls the signal output unit 107 and turns on only the display lamp 33A of the display device 30A in order to notify the person in the room RA that the sound in the room is clearly audible to the person in the adjacent room. Are output from the signal output unit 107. When this signal is input to the display device 30A, the display device 30A turns on only the red indicator lamp 33A according to the input signal. The person in the room RA can know that the conversation voice in the room is clearly audible to the person in the adjacent room RB because the indicator light lit in the display device 30A is a red indicator light. .

  As described above, according to the present embodiment, how to hear the transmitted sound in the adjacent room, that is, how to hear the sound in the adjacent room corresponding to the relative relationship between the transmitted sound to the adjacent room and the background noise in the adjacent room. Is notified. This allows persons in the room where the transmitted sound is generated to know how to hear the sound in the adjacent room, so as not to bother the adjacent room, or prevent the contents of the conversation from being known to the adjacent room. The sound in the room can be reduced.

[Modification]
As mentioned above, although embodiment of this invention was described, embodiment mentioned above is an example of embodiment which concerns on this invention, This invention is not limited to embodiment mentioned above, It can implement with other various forms. It is. For example, the present invention may be implemented by modifying the above-described embodiment as follows.

  In the above-described embodiments, the microphones 20A and 20B may be dynamic microphones, condenser microphones, or optical microphones that detect sound using light.

  In the above-described embodiment, as long as light is emitted, a light bulb, a fluorescent tube, an LED (Light Emitting Diode), or the like may be used as the display lamp of the display devices 30A and 30B. Further, when notifying how to hear a transmitted sound, for example, in a display device such as a liquid crystal display, a CRT (Cathode Ray Tube), or an EL (electro-luminescence) display, the way of hearing is notified using characters or figures. Good. In addition to notifying visually, for example, how to hear a transmitted sound may be notified by a change in sound or a change in vibration. Moreover, the lighting color, the number of display lamps, and the display mode of the display lamps in the display devices 30A and 30B are not limited to the above-described embodiments. Each indicator lamp may be blinked, and the manner in which each indicator lamp blinks may be different. In any case, any light emitting mode may be used as long as it can notify how to hear the transmitted sound.

In the above-described embodiment, an operator such as a keyboard may be provided in the notification device 10 and the D value stored in the storage unit 105 may be changed by operating the operator.
In the above-described embodiment, it is determined that the transmitted sound can be clearly heard when the sound pressure level of background noise is +6 [dB] or higher, but the value of +6 [dB] used for this determination is stored. This value may be stored in the unit 105 so that this value can be changed by an operator.
In this case, the user can change the stored value in accordance with the use time of the room (daytime, nighttime) or the purpose of use of the room (chat, important meeting).
In addition, the user can change the stored value according to the preference of the person using the room (sensitive to noise from the adjacent room, placing importance on the secret of conversation).
For example, it may be determined that the transmitted sound is clearly audible if the sound pressure level of the background noise is +5 [dB] or higher, or the transmitted sound is determined if the sound pressure level of the background noise is +7 [dB] or higher. You may decide that you can hear clearly. In this manner, in the aspect in which the determination criterion can be changed, a value (a value stored in the storage unit 105) that is used for the above-described determination by the operator who feels the transmitted sound uncomfortable operates the operation element. ) May be changed.

  In the embodiment described above, the microphone 20A (20B) and the display device 30A (30B) are separate, but as shown in FIG. 3, a device in which the microphone and the indicator lamp are integrated is used. Sound collection and notification may be performed. Further, as shown in FIG. 3, a level meter LEV for displaying the sound pressure level of the sound is provided so that the sound pressure level of the sound in the own room or the sound pressure level of the transmitted sound to the other room is represented by the level meter LEV. May be. In addition, the operation element K may be provided in the apparatus shown in FIG. 3, and the D value stored in the storage unit 105 and the value related to the determination criterion may be changed by the operation element K as described above.

In the embodiment described above, a configuration for masking the transmitted sound transmitted through each room may be provided. Hereinafter, a notification system having this configuration will be described.
FIG. 4 is a diagram showing an overall configuration of a notification system 1A having a configuration for masking sound transmitted to each room, and FIG. 5 shows a hardware configuration of a notification device 10A according to the notification system 1A. It is a block diagram. As shown in FIGS. 4 and 5, in this modified example, the point that the speaker SPA is provided in the room RA and the speaker SPB is provided in the room RB, and the point that the notification device 10 </ b> A includes the masking unit 108 are described above. Different from the embodiment. In addition, since it is the same as embodiment mentioned above about the structure other than this, about the same component as embodiment mentioned above in FIG.4, FIG.5, the same code | symbol as FIG.1, FIG.2 is attached | subjected and the description is abbreviate | omitted. To do.

  For example, the masking unit 108 generates a masking signal representing noise such as white noise, and is connected to the speaker SPA and the speaker SPB. The masking unit 108 separately generates a masking signal having a predetermined sound pressure level to be output to the speaker SPA and a masking signal having a predetermined sound pressure level to be output to the speaker SPB, and outputs the generated masking signal to the speakers SPA and SPB. .

  In the notification system 1A, for example, when the sound pressure level of the transmitted sound from the room RA to the room RB is larger than the sound pressure level of the background noise in the room RB, the masking unit 108 is controlled by the CPU 102, and the masking signal Is output to the speaker SPB. The speaker SPB supplied with the masking signal outputs white noise represented by the supplied masking signal. The transmitted white noise from the room RA to the room RB is masked by the output white noise, so that a person in the room RB cannot hear the transmitted sound from the room RA and does not feel uncomfortable due to the transmitted sound. .

  In the above-described notification system 1A, the sound pressure level of the white noise represented by the masking signal according to the difference between the sound pressure level of the transmitted sound from the room RA to the room RB and the sound pressure level of the background noise in the room RB. The sound pressure level of the white noise output in the room RB may be increased as the sound pressure level of the transmitted sound becomes higher than the sound pressure level of the background noise. Of course, the sound pressure level of the white noise represented by the masking signal is controlled according to the difference between the sound pressure level of the transmitted sound from the room RB to the room RA and the sound pressure level of the background noise in the room RA. As the pressure level becomes higher than the sound pressure level of background noise, the sound pressure level of white noise output in the room RA may be increased.

  When the room in the embodiment described above is a conference room in an office and a speaker for performing local broadcasting is installed in each room, the volume of sound output from the speaker increases as the sound pressure level of the transmitted sound increases. It may be made larger. In addition, when a speaker is provided in each room and background music is played from this speaker, the volume of sound output from the speaker may be increased as the sound pressure level of the transmitted sound increases.

  The display devices in the above-described embodiments may be collected in one room, and how the transmitted sound is heard in each room may be monitored. Moreover, in the aspect which collects each display apparatus in one room, and monitors how to hear the transmitted sound in each room, since the sound generation in each room can be known, the notification system 1 is used as a sound sensor. Can also be used to monitor the facility.

In the embodiment described above, the number of rooms is two, but the number of rooms is not limited to two, and may be three or more. When there are three or more rooms and there are two or more adjacent rooms, the sound pressure level of the transmitted sound to each adjacent room and the background noise of each adjacent room is obtained, and the transmitted sound is heard. The indicator lamp may be turned on by determining the direction. Further, when there are two or more rooms adjacent to a certain room, the sound insulation performance of the boundary wall may be different from each other. In the above-described embodiment, how to hear the transmitted sound transmitted to the adjacent room is determined. However, for the transmitted sound transmitted to the upper or lower room, how to hear the transmitted sound is determined. You may make it alert | report. In this case, the sound pressure level of the transmitted sound may be obtained using the L value representing the sound insulation performance of the floor.
In the above-described embodiment, the sound pressure level of the transmitted sound is obtained by using the D value representing the sound insulation performance of the boundary wall. In addition to the D value, a value representing the acoustic condition of the adjacent room is used. The sound pressure level of the transmitted sound may be obtained. That is, it may be an actual measurement value or a calculated value of the sound insulation performance of the field wall in a plurality of frequency bands (for example, every 1/1 octave band from 63 [Hz] to 4 [KHz]), or other sound insulation grade (STC curve). )
In the above-described embodiment, the room RA reports how to hear the transmitted sound transmitted from the room RA to the room RB. However, the room RA together with the room RA displays how to transmit the transmitted sound transmitted from the room RA to the room RB. You may make it alert | report.
Further, the rooms may not be adjacent to each other, and the room RA and the room RB may be arranged in a path through which the transmitted sound propagates. That is, in the above-described embodiment, one or more other spaces (for example, spaces such as corridors, halls, reception rooms, rest areas, staircases) are interposed between the room RA and the room RB. The present invention can also be applied to a relationship in which the room RB is arranged.

It is the figure which showed the whole structure of the alerting | reporting system which concerns on one Embodiment of this invention. It is the block diagram which showed the hardware constitutions of the alerting | reporting apparatus which concerns on the embodiment. It is an external view of the apparatus with which the microphone and the indicator lamp were united. It is the figure which showed the whole structure of the alerting | reporting system which concerns on the modification of this invention. It is the block diagram which showed the hardware constitutions of the alerting | reporting apparatus which concerns on the modification of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Notification system, 10 ... Notification device, 20A, 20B ... Microphone, 30A, 30B ... Display device, 31A-33A, 31B-33B ... Indicator lamp, 101 ... Bus, 102 ... CPU, 103 ... ROM, 104 ... RAM, 105 ... storage unit, 106 ... signal input unit, 107 ... signal output unit, RA, RB ... room

Claims (6)

First sound collecting means for collecting sound in the first room and outputting a first audio signal representing the collected sound;
Second sound collecting means for collecting sound in the second room and outputting a second audio signal representing the collected sound;
A sound pressure analyzing means for obtaining a first sound pressure of the sound of the first room based on the first audio signal and obtaining a second sound pressure of the sound of the second room based on the second audio signal;
Based on the first sound pressure and sound insulation information regarding sound insulation performance between the first room and the second room, the sound represented by the first audio signal is transmitted to the second room after transmission. Transmitted sound analysis means for obtaining a third sound pressure;
An operator disposed in the second room;
Changing means for changing a judgment criterion which is a value to be added to the second sound pressure in accordance with an operation performed by the operation element;
A determination unit based on the modified criteria to determine the relationship between the result of adding the criteria to the second sound pressure and the third sound pressure at the changing means,
An informing device provided in the first room and the second room, and informing means for informing a judgment result of the judging means. First sound collecting means for collecting sound in the first room and outputting a first audio signal representing the collected sound;
Second sound collecting means for collecting sound in the second room and outputting a second audio signal representing the collected sound;
A sound pressure analyzing means for obtaining a first sound pressure of the sound of the first room based on the first audio signal and obtaining a second sound pressure of the sound of the second room based on the second audio signal;
Based on the first sound pressure and sound insulation information regarding sound insulation performance between the first room and the second room, the sound represented by the first audio signal is transmitted to the second room after transmission. Transmitted sound analysis means for obtaining a third sound pressure;
An operator disposed in the first room;
Changing means for changing a judgment criterion which is a value to be added to the second sound pressure in accordance with an operation performed by the operation element;
A determination unit based on the modified criteria to determine the relationship between the result of adding the criteria to the second sound pressure and the third sound pressure at the changing means,
A notifying device provided in the first room and notifying means for notifying a determination result of the determining means. Masking sound signal output means for outputting a masking sound signal in accordance with the determination result of the determination means;
Sound output means arranged in the second room and outputting a masking sound according to the masking sound signal output from the masking sound signal output means;
The notification device according to claim 1, comprising: The notification apparatus according to claim 3, wherein the masking sound signal output unit changes a sound pressure of the masking sound according to a determination result of the determination unit. First sound collecting means for collecting sound in the first room and outputting a first audio signal representing the collected sound;
Second sound collecting means for collecting sound in the second room and outputting a second audio signal representing the collected sound;
A sound pressure analyzing means for obtaining a first sound pressure of the sound of the first room based on the first audio signal and obtaining a second sound pressure of the sound of the second room based on the second audio signal;
Based on the first sound pressure and sound insulation information regarding sound insulation performance between the first room and the second room, the sound represented by the first audio signal is transmitted to the second room after transmission. Transmitted sound analysis means for obtaining a third sound pressure;
An operator disposed in the second room;
Changing means for changing a judgment criterion which is a value to be added to the second sound pressure in accordance with an operation performed by the operation element;
A determination unit based on the modified criteria to determine the relationship between the result of adding the criteria to the second sound pressure and the third sound pressure at the changing means,
Informing means provided in the first room and the second room and informing the judgment result of the judging means;
Masking sound signal output means for outputting a masking sound signal in accordance with the determination result of the determination means;
And a sound output means disposed in the second room and outputting a masking sound in accordance with the masking sound signal output from the masking sound signal output means. First sound collecting means for collecting sound in the first room and outputting a first audio signal representing the collected sound;
Second sound collecting means for collecting sound in the second room and outputting a second audio signal representing the collected sound;
A sound pressure analyzing means for obtaining a first sound pressure of the sound of the first room based on the first audio signal and obtaining a second sound pressure of the sound of the second room based on the second audio signal;
Based on the first sound pressure and sound insulation information regarding sound insulation performance between the first room and the second room, the sound represented by the first audio signal is transmitted to the second room after transmission. Transmitted sound analysis means for obtaining a third sound pressure;
An operator disposed in the first room;
Changing means for changing a judgment criterion which is a value to be added to the second sound pressure in accordance with an operation performed by the operation element;
A determination unit based on the modified criteria to determine the relationship between the result of adding the criteria to the second sound pressure and the third sound pressure at the changing means,
An informing means provided in the first room for informing a judgment result of the judging means;
Masking sound signal output means for outputting a masking sound signal in accordance with the determination result of the determination means;
And a sound output means disposed in the second room and outputting a masking sound in accordance with the masking sound signal output from the masking sound signal output means.

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