JP6866764B2 - Speech processing system and speech processor - Google Patents

Description

The present invention relates to a voice processing system and a voice processing device.

In recent years, it has been practiced to provide a meeting booth for meetings, business negotiations, etc. by dividing an indoor space such as an office by a partition. By providing a meeting booth with partitions in this way, it is possible to efficiently use the indoor space and enhance the vitality of the entire indoor space.

The meeting booth is desired to exist near an indoor office space or the like from the viewpoint of efficient use of the indoor space and activation of the indoor space. Further, it is desired that a sufficient number of the meeting booths exist from the above viewpoint, and therefore each meeting booth is being reduced in size.

However, when the size of the meeting booth is reduced, there is a high possibility that the conversation in the meeting booth will be leaked to the outside of the meeting booth. From this point of view, a technique has been put into practical use today in which a speaker is provided in the partition and a masking sound is emitted so that the conversation in the meeting booth cannot be heard outside (Japanese Patent Laid-Open No. 2012-82585). See Gazette).

Japanese Unexamined Patent Publication No. 2012-82585

The masking sound as described in the above-mentioned publication is a sound that is not usually related to the conversation in the meeting booth. Such masking sounds are required to conceal the conversation content in the meeting booth and to be controlled to a volume that does not reduce the work efficiency of people outside the meeting booth. However, it is difficult to control the volume that is not noticeable to people outside the meeting booth because it depends on the volume of conversation leaking from the meeting booth, the type of masking sound, and the like.

In view of such inconvenience, the present invention presents a voice processing system and a voice processing device capable of making it difficult for the conversation contents in the booth to be transmitted to the outside of the booth while suppressing giving a feeling of noise to a person existing outside the booth. The challenge is to provide.

The present invention made to solve the above problems is used in an indoor space including a main space and one or a plurality of booths divided by the main space and a partition, and is emitted in the one or a plurality of booths. A first indistinct sound generation mechanism that generates an indistinct sound from a sound, and a mechanism that emits an indistinct sound based on the indistinct sound generated by the first indistinct sound generation mechanism into the main space. It is a voice processing system including.

The first obscure sound generation mechanism may have a means for reducing the high frequency component of the sound emitted in the booth and a means for adding reverberation to the sound after the reduction of the high frequency component.

A second indistinct sound generation mechanism for generating an indistinct sound from a sound emitted outside the booth is further provided, and the sound emission mechanism is based on the indistinct sound generated by the second indistinct sound generation mechanism. The obscured sound may be emitted into the main space.

A mechanism for mixing the sound obtained by the first indistinct sound generation mechanism and the sound obtained by the second indistinct sound generation mechanism is further provided, and the sound emitting mechanism is mixed by the mixing mechanism. It is advisable to emit an obscured sound.

Further, the present invention made to solve the above-mentioned problems is used in an indoor space including a main space and one or a plurality of booths divided by the main space and a partition, and is used in the one or a plurality of booths. The microphone that collects the sound, the obscuring processing unit that obscures the sound collected by the microphone, and the obscuring sound based on the obscuring sound generated by the obscuring processing unit are described above. It is a sound processing device including a speaker that emits sound in the main space.

In the present invention, the "indistinct sound" means a sound in which the original sound is hard to hear by performing voice processing on the original sound. The “high frequency component” refers to a sound having a predetermined frequency or higher, for example, a sound having a frequency of 500 Hz or higher. "Reverberation" refers to a group of reflected sounds that cannot be separated as individual reflected sounds among the reflected sounds, and refers to reflected sounds that arrive after the arrival of the initial reflected sound.

The voice processing system according to the present invention generates an unclear sound from sounds emitted in one or more booths, and emits an unclear sound based on the unclear sound to the main space, so that a conversation in the booth is performed. It is possible to make it difficult for the contents to be transmitted outside the booth. Further, in the voice processing system, since the obscured voice is derived from the sound emitted in the booth, it is easy to match the sound pressure level of the obscured voice with the sound pressure level of the sound emitted in the booth. Therefore, the voice processing system can make it difficult for the person who exists outside the booth to be aware of the obscured voice, so that it is difficult to give a sense of noise to the person who exists outside the booth.

Since the voice processing device according to the present invention is configured to be able to emit the obscured sound based on the unclear sound generated by the obscuring processing unit from the sound collected by the microphone into the main space, it is possible to emit the unclear sound in the booth. It is possible to make it difficult for the content of the conversation to be transmitted outside the booth. Further, since the voice processing device derives the obscured voice from the sound emitted in the booth, it is easy to match the sound pressure level of the obscured voice with the sound pressure level of the sound emitted in the booth. Therefore, the voice processing device can make it difficult for the person who exists outside the booth to be aware of the obscured voice, so that it is difficult to give a sense of noise to the person who exists outside the booth.

It is a schematic diagram which shows the room space of the voice processing system which concerns on one Embodiment of this invention. It is a schematic diagram which shows the voice processing system in the room space of FIG. It is a figure which shows the detail of the obscure sound generation mechanism of the voice processing system of FIG. It is a schematic diagram which shows the voice processing system which concerns on the form different from the voice processing system of FIG. It is a schematic diagram which shows the voice processing system which concerns on the form different from the voice processing system of FIG. 2 and FIG. It is a schematic diagram which shows the voice processing system which concerns on the form different from the voice processing system of FIG.2, FIG.4 and FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.

[First Embodiment]
<Voice processing system>
The voice processing system according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 3. As shown in FIG. 1, the audio processing system is used in an indoor space including a main space X1 and a plurality of booths Y1 divided by the main space X1 and a partition P1. The indoor space is not particularly limited, and examples thereof include an office space. When this indoor space is an office space, the main space X1 is typically an office space, and the booth Y1 is a meeting booth for meetings, business negotiations, and the like. In the present embodiment, three booths Y1 are provided on one end side of the indoor space. The specific structure of the partition P1 is not particularly limited, and may be a mobile type or a fixed type fixed to a wall defining an indoor space. However, since the voice processing system is suitable when the conversation content in the booth Y1 is leaked to the main space X1, a preferable partition P1 is, for example, a type in which a space is formed between the booth Y1 and the ceiling. Be done.

In the present embodiment, each booth Y1 is provided with a table A1 and a plurality of chairs B1. The table A1 has, for example, a top plate having a substantially rectangular shape in a plan view. Further, a pair of chairs B1 are arranged in the vicinity of the pair of side edges of the top plate facing each other. In the present embodiment, for example, one party of the business negotiation is seated on the pair of chairs B1 arranged in the vicinity of one side edge of the top plate, and the other side facing the one side edge of the top plate. The other party to the negotiation is seated in the pair of chairs B1 located near the rim.

As shown in FIG. 2, the voice processing system is generated by a first unclear sound generation mechanism 1 and a first unclear sound generation mechanism 1 that generate unclear sounds from sounds emitted in each booth Y1. It is provided with a sound emitting mechanism 2 that emits an obscured sound based on the unclear sound to the main space X1. Although only one booth Y1 is shown in FIG. 2, the voice processing system also generates a first unclear sound from the sound emitted in the booth Y1 for the other booths Y1. It includes a mechanism 1 and a sound emitting mechanism 2 that emits an unclear sound based on the unclear sound generated by the first unclear sound generation mechanism 1 to the main space X1.

(Unclear sound generation mechanism)
As shown in FIG. 3, the first unclear sound generation mechanism 1 includes a sound collecting means 3, a high frequency component reducing means 4, and a reverberation adding means 5. Further, the first unclear sound generation mechanism 1 divides the sound signal collected by the sound collecting means 3 into the signal dividing means 6 and the sound signal divided by the signal dividing means 6 on the time axis. Further provided are a signal processing means 7 that performs processing along the line, and a synchronization means 8 that synchronizes the timing at which the conversation in each booth Y1 leaks into the main space X1 and the timing at which the above-mentioned obscured sound is emitted into the main space X1. You may be. In the first indistinct sound generation mechanism 1, the high frequency component reducing means 4, the reverberation adding means 5, the signal dividing means 6, the signal processing means 7, and the synchronizing means 8 collect the sound collected by the sound collecting means 3. It is configured as an obscuring processing means for obscuring processing.

<Sound collecting means>
The sound collecting means 3 collects the sound in each booth Y1. Specifically, the sound collecting means 3 collects sounds of conversations such as business negotiations held in each booth Y1. The sound collecting means 3 is composed of microphones 11a and 11b. In the present embodiment, the microphones 11a and 11b are provided near the edge of the table top plate on the side where one party is seated and near the edge on the side where the other party is seated. As a result, the sound collecting means 3 is configured to be able to easily and surely collect the conversation at a stage earlier in time than the conversation in each booth Y1 leaks out of the booth Y1. Even if the audio signal (analog signal) collected by the sound collecting means 3 is converted into a digital signal by an A / D conversion means (not shown) composed of an A / D conversion unit or the like, if necessary. Good.

<Signal dividing means>
The signal dividing means 6 divides the audio signal collected by the sound collecting means 3 in a short time of, for example, 1 sec or more and 5 sec or less. The signal dividing means 6 is composed of a signal dividing unit including a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. The signal dividing means 6 may divide the audio signal collected by the sound collecting means 3 at equal time intervals or at random time intervals. When the signal dividing means 6 divides the audio signal collected by the sound collecting means 3 in the time units, the conversation content of the first few seconds in each booth Y1 may be leaked to the outside. However, when the signal dividing means 6 divides the voice signal collected by the sound collecting means 3 in the time unit, it is easy to maintain the spectral characteristics of the conversation voice. Therefore, it is possible to make it difficult for the contents of the conversation as a whole to be transmitted outside each booth Y. Further, according to this configuration, the consciousness of the person existing in the main space X1 can be made difficult to be directed to the obscured voice emitted by the sound emitting mechanism 2, so that the person existing in the main space X1 feels noisy. Hard to give.

<Signal processing means>
The signal processing means 7 inverts a part or all of the audio signals divided by the signal dividing means 6 along the time axis or rotates them with reference to the time axis, and then crossfades them. The signal processing means 7 is composed of a signal processing unit including a CPU, a ROM, a RAM, and the like. It is preferable that the signal processing means 7 performs pitch conversion on the audio signal divided by the signal dividing means 6 and then inverts the audio signal along the time axis or rotates the audio signal with reference to the time axis.

<Means for reducing high frequency components>
The high frequency component reducing means 4 reduces the high frequency component of the sound emitted in each booth Y1. The high frequency component reducing means 4 is composed of, for example, a low-pass filter. The high frequency component reducing means 4 reduces high frequency components having a frequency of, for example, 500 Hz or higher. The voice processing system does not necessarily have to have the above-mentioned signal dividing means 6 and signal processing means 7. When the voice processing system does not have the above-mentioned signal dividing means 6 and signal processing means 7, the high frequency component reducing means 4 is a voice signal (analog signal) collected by the sound collecting means 3 or a digital signal if necessary. Reduces the high frequency component of the audio signal converted to. Further, when the voice processing system has the above-mentioned signal dividing means 6 and signal processing means 7, the high frequency component reducing means 4 reduces the high frequency component of the voice signal processed by the signal processing means 7.

<Means for adding reverberation>
The reverberation adding means 5 adds reverberation to the sound whose high frequency component is reduced by the high frequency component reducing means 4. The reverberation adding means 5 is composed of a reverberation adding unit including a CPU, a ROM, a RAM, and the like. The reverberation adding means 5 adds reverberation having a high initial reflection density and a short reverberation time to an audio signal whose high frequency component has been reduced by, for example, the high frequency component reducing means 4. Specifically, the reverberation adding means 5 performs a plurality of delay processes (delays) on the audio signal whose high frequency component is reduced by the high frequency component reducing means 4, and adds the delayed audio signals to a plurality of reflected sounds. Is added. The reverberation adding means 5 is generated by the first indistinct sound generation mechanism 1 by adding a reverberation having a high initial reflection density and a short reverberation time to a voice signal whose high frequency component has been reduced by the high frequency component reducing means 4. While controlling the amount of energy of the entire voice, the tone color and volume of the voice can be easily and surely controlled. The "initial reflection density" refers to the number of reflected sounds per unit time.

<Synchronization means>
In the synchronization means 8, the first obscure sound generation mechanism 1 is provided so that the timing at which the obscured sound is emitted from the sound emitting mechanism 2 described later overlaps with the timing at which the conversation in each booth Y1 leaks to the main space X1. The timing at which the audio signal is output to the sound emitting mechanism 2 is adjusted. The synchronization means 8 is composed of a synchronization unit including a CPU, ROM, RAM, and the like. The synchronization means 8 corresponds to the time when the conversation in each booth Y1 is propagated to the main space X1, for example, calculated based on the distance between the speaker and the main space X1 assumed in each booth Y1. The timing at which the audio signal is output from the indistinct sound generation mechanism 1 of 1 to the sound emission mechanism 2 is delayed. When it is not necessary to adjust the timing at which the obscured voice is emitted from the sound emitting mechanism 2 and the timing at which the conversation in each booth Y1 leaks to the main space X1, the voice processing system does not necessarily have the synchronization means 8 It is not necessary to have.

In the voice processing system, since the first unclear sound generation mechanism 1 includes the high frequency component reducing means 4 and the reverberation adding means 5, it is possible to easily and surely generate unclear sound. In particular, when the first obscure sound generation mechanism 1 has the high frequency component reducing means 4 and the reverberation adding means 5, it has a different meaning from the conversation spoken in each booth Y1 while suppressing the change in the sound pressure level. Since it is possible to emit a non-existent word sequence, it is difficult to give a sense of noise to the listener who hears the obscured sound based on the unclear sound generated by the unclear sound generation mechanism 1 in the main space X1.

Further, in the voice processing system, when the first unclear sound generation mechanism 1 has the signal dividing means 6 and the signal processing means 7, the conversation in each booth Y1 and the first unclear sound generating mechanism 1 generate the sound. Since the electrical signal correlation with the unclear sound to be generated can be easily and surely reduced, it is easy to suppress the generation of unpleasant sounds such as howling. Further, according to this configuration, it is easy to enhance the effect of producing the liveliness of the main space X1, which makes it difficult for the consciousness of the person existing in the main space X1 to be directed by the conversation in each booth Y1.

When the first unclear sound generation mechanism 1 has the synchronization means 8, the voice processing system emits an unclear sound in accordance with the remark only when the speaker speaks in each booth Y1. be able to. Therefore, it is possible to reliably suppress the leakage of the conversation content in each booth Y1 to the main space X1, and it is possible to more accurately suppress the generation of noise due to the obscured voice.

(Sound release mechanism)
The sound emitting mechanism 2 is composed of a speaker. This speaker is attached to, for example, the side surface of the partition P1 that separates each booth Y1 and the main space X1 on the main space X1 side. The sound emitting mechanism 2 is an unclear sound generated by the first unclear sound generating mechanism 1 and converted into an analog signal by a D / A conversion means (not shown) composed of a D / A conversion unit as needed. The sound is emitted to the main space X1 as an obscuring sound.

<Voice processing device>
Subsequently, the voice processing device constituting the hardware of the voice processing system will be described. The audio processing device is used in an indoor space including a main space X1 and a plurality of booths Y1 divided by the main space X1 and a partition P1. The voice processing device includes microphones 11a and 11b that collect the sounds in each booth Y1, an obfuscation processing unit 12 that obscures the sounds collected by the microphones 11a and 11b, and an obscuration process. A speaker (speaker constituting the above-mentioned sound emitting mechanism 2) that emits an unclear sound based on the unclear sound generated by the unit 12 in the main space X1 is provided. The obfuscation processing unit 12 has the above-mentioned low-pass filter and reverberation adding unit. Further, the obscuring processing unit 12 may further include the above-mentioned signal dividing unit, signal processing unit, and synchronization unit.

<Advantage>
The voice processing system generates an unclear sound from the sounds emitted in the plurality of booths Y1 and emits the unclear sound based on the unclear sound to the main space X1, so that the conversation content in the booth Y1 can be displayed. It can be difficult to convey to the outside of booth Y1. Further, in the voice processing system, since the obscured voice is derived from the sound emitted in the booth Y1, it is easy to match the sound pressure level of the obscured voice with the sound pressure level of the sound emitted in the booth Y1. .. Therefore, the voice processing system can make it difficult for the person who exists outside the booth Y1 to be aware of the obscured voice, so that it is difficult to give a sense of noise to the person who exists outside the booth Y1.

Since the voice processing system generates the obscured voice by using the voice of the conversation in each booth Y1, it is unlikely that the unnaturalness caused by emitting the obscured voice is generated. Therefore, the voice processing system can easily make the above-mentioned obscured voice function as a voice for simply creating an atmosphere of an indoor space.

Since the voice processing device is configured to be able to emit the obscured sound based on the unclear sound generated by the obscuring processing unit 12 from the sound collected by the microphones 11a and 11b to the main space X1. It is possible to make it difficult for the conversation content in each booth Y1 to be transmitted to the outside of the booth Y1. Further, in the voice processing device, since the obscured voice is derived from the sound emitted in the booth Y1, it is easy to match the sound pressure level of the obscured voice with the sound pressure level of the sound emitted in the booth Y1. .. Therefore, the voice processing device can make it difficult for the person who exists outside the booth Y1 to be aware of the obscured voice, so that it is difficult to give a sense of noise to the person who exists outside the booth Y1.

[Second Embodiment]
Next, the voice processing system according to the second embodiment of the present invention will be described with reference to FIG. The audio processing system is used in an indoor space including a main space X2, the main space X2, and one or more booths Y2 separated by a partition P2. The indoor space is not particularly limited, and examples thereof include an office space as in the first embodiment. When this indoor space is an office space, the main space X2 is typically an office space, and the booth Y2 is a meeting booth for meetings, business negotiations, and the like. The audio processing system is configured as a remote conference system capable of conducting a remote conference between the booth Y2 and another booth Y3 provided in an indoor space separate from the booth Y2 (note that it will be described below). For convenience of convenience, the booth Y2 separated by the main space X2 and the partition P2 is referred to as "first booth Y2", and the other booth Y3 provided in the indoor space separate from the first booth Y2 is referred to as "second booth Y3". Sometimes). The specific configuration of the partition P2 is not particularly limited, and the same partition 1 as in the voice processing system of FIGS. 1 to 3 can be used.

In the present embodiment, the first booth Y2 is provided with a table A2 and a plurality of chairs B2. Further, remote conference terminals 23a and 23b are arranged in the first booth Y2 and the second booth Y3. In the first booth Y2, the remote conference terminal 23a is placed on the table A2. The remote conference terminals 23a and 23b have a speaker and a microphone, and the sound collected by the microphone of one remote conference terminal 23a and 23b can be emitted from the speaker of the other remote conference terminals 23a and 23b. ing.

The voice processing system has a first indistinct sound generation mechanism 21 that generates an indistinct sound from a sound emitted in the first booth Y2, and a first indistinct sound that generates an indistinct sound from a sound emitted outside the first booth Y2. In the unclear sound generation mechanism 22 of 2, the unclear sound based on the unclear sound generated by the first unclear sound generation mechanism 21, and the unclear sound generated by the second unclear sound generation mechanism 22 It is provided with a sound emitting mechanism 24 that emits an obscured sound based on the sound in the main space X2. Further, the voice processing system includes a mixing mechanism 25 that mixes the sound obtained by the first unclear sound generation mechanism 21 and the sound obtained by the second unclear sound generation mechanism 22, and emits sound. The mechanism 24 is configured to emit the obscured sound mixed by the mixing mechanism 25.

(Indistinct sound generation mechanism)
The first obscure sound generation mechanism 21 has the same configuration as the first obscure sound generation mechanism 1 of the voice processing system of FIGS. 1 to 3 except that the sound collecting means is composed of the microphone of the remote conference terminal 23a. Can be.

The second unclear sound generation mechanism 22 generates an unclear sound from the sound emitted in the second booth Y3. The second obscure sound generation mechanism 22 has the same configuration as the first obscure sound generation mechanism 1 of the voice processing system of FIGS. 1 to 3 except that the sound collecting means is composed of the microphone of the remote conference terminal 23b. Can be.

(Mixing mechanism)
The mixing mechanism 25 is composed of a mixing device including a CPU, a ROM, a RAM, and the like. The specific mixing method by the mixing mechanism 25 is not particularly limited, and a known method can be adopted. As long as the mixing mechanism 25 is configured to mix the sound obtained by the first unclear sound generation mechanism 21 and the sound obtained by the second unclear sound generation mechanism 22, for example, the first unclear sound. The sounds collected by the microphone of the generation mechanism 21 and the microphone of the second obscure sound generation mechanism 22 may be mixed, and the obscure sound generated by the first obscure sound generation mechanism 21 and the second obscure sound generation mechanism 21 may be mixed. The unclear sound generated by the unclear sound generation mechanism 22 may be mixed. However, since the mixing mechanism 25 can easily control the degree of ambiguity and the mixing level independently, the unclear sound generated by the first unclear sound generation mechanism 21 and the second unclear sound generation mechanism It is preferable to mix the obscure sound generated in 22. Further, when the mixing mechanism 25 mixes the sound collected by the microphone of the first obscure sound generation mechanism 21 and the microphone of the second obscure sound generation mechanism 22, the sound mixed by the mixing mechanism 25 is mixed. Therefore, the obfuscation process may be performed by the above-mentioned high frequency component reducing means 4, reverberation adding means 5, signal dividing means 6, signal processing means 7, synchronization means 8, and the like. Further, when the mixing mechanism 25 mixes the sounds collected by the microphone of the first obscure sound generation mechanism 21 and the microphone of the second obscure sound generation mechanism 22, the first obscure sound generation mechanism 21 and It is not necessary for the second obscure sound generation mechanism 22 to have the above-mentioned obfuscation processing means, respectively, and the first obscure sound generation mechanism 21 and the second obscure sound generation mechanism 22 are one in common. It suffices to have a chemical processing means.

(Sound release mechanism)
The sound emitting mechanism 24 is composed of a speaker. This speaker is attached to, for example, the side surface of the partition P2 that separates the first booth Y2 and the main space X2 on the main space X2 side. The sound emitting mechanism 24 is obscured by the first obscure sound generation mechanism 21 and the second obscure sound generation mechanism 22, and after being mixed by the mixing mechanism 25, D / A conversion is performed as necessary. The obscured sound converted into an analog signal by the D / A conversion means (not shown) composed of the parts is emitted to the main space X2.

<Voice processing device>
Subsequently, the voice processing device constituting the hardware of the voice processing system will be described. The audio processing device is used in an indoor space including a main space X2 and one or a plurality of first booths Y2 divided by the main space X2 and a partition P2. The audio processing device is configured as a remote conference device capable of conducting a remote conference between the first booth Y2 and the second booth Y3 provided in an indoor space separate from the first booth Y2.

The voice processing device obscures the first microphone (the microphone provided in the remote conference terminal 23a described above) that collects the sound in the first booth Y2 and the sound collected by the first microphone. The sound is collected by the first obscuring processing unit to be processed, the second microphone (the microphone provided in the remote conference terminal 23b described above) that collects the sound in the second booth Y3, and the second microphone. The second obfuscation processing unit that obscures the sound and the sound collected by the first microphone and the second microphone, or the first obscuring processing unit and the second obscuring processing. A mixing device that mixes the unclear sound generated by the unit (the mixing device that constitutes the above-mentioned mixing mechanism 25) and a speaker that emits the obscured sound mixed by this mixing device (the above-mentioned sound emitting mechanism 24). It is equipped with a speaker). The specific configuration of the first obscuration processing unit and the second obscuration processing unit can be the same as that of the obscuration processing unit 12 in the first embodiment.

<Advantage>
The voice processing system includes a second unclear sound generation mechanism 22 that generates unclear sound from the sound emitted outside the first booth Y2, and the sound emitting mechanism 24 is generated by the first unclear sound generation mechanism 21. In addition to the obscured sound based on the unclear sound, the obscured sound based on the unclear sound generated by the second unclear sound generation mechanism 22 is emitted to the main space X2, so that a remote conference is held. Even if it is, the obscuring sound can be emitted over the conversations that are held at different places. Therefore, in addition to the content of the remarks made at the first booth Y2, it is possible to accurately suppress the sound emitted from the remote conference terminal 23b from leaking to the main space X2.

Further, the voice processing system includes a mixing mechanism 25 for mixing the sound obtained by the first unclear sound generation mechanism 21 and the sound obtained by the second unclear sound generation mechanism 22, and the sound emitting mechanism 24. Dissipates the obscured sound mixed by the mixing mechanism 25, so that the effect of concealing the conversation content with respect to the person existing in the main space X2 can be enhanced. That is, for example, rather than emitting the obscured voice based on the remarks of one speaker existing in the first booth Y2 to the main space X2, the obfuscated voice based on the remarks of a plurality of speakers is emitted in the main space. By emitting sound to X2, it is possible to make it more difficult to convey the conversation content to the person existing in the main space X2, and it is possible to make it more difficult for the consciousness of the person existing in the main space X2 to be directed to the conversation content.

Similar to the voice processing system, the voice processing device can accurately suppress the voice emitted from the remote conference terminal 23a from leaking to the main space X2 in addition to the content of the speech at the first booth Y2. .. Further, the voice processing device, like the voice processing system, can easily make the voice emitted in the main space X2 function as the voice for creating the atmosphere of the indoor space.

[Other Embodiments]
The embodiments do not limit the configuration of the present invention. Therefore, it is possible to omit, replace or add components of each part of the embodiment based on the description of the present specification and common general technical knowledge, and all of them are construed as belonging to the scope of the present invention. Should be.

For example, the audio processing system may be used in an indoor space including a main space and one booth divided by the main space and a partition. Further, even when the voice processing system is used in an indoor space having a plurality of booths, it does not necessarily generate an unclear sound from the sounds emitted in all the booths and emits an unclear sound based on the unclear sound. It is not necessary to make a sound, and the unclear sound may be generated only from the sound emitted in one or a specific booth, and the obscured sound based on this unclear sound may be emitted. Further, when the voice processing system is used in an indoor space having a plurality of booths, the voice processing system may be configured to be capable of emitting unclear voice to adjacent booths.

In the above-described embodiment, the configuration in which the indistinct sound generation mechanism has the high frequency component reducing means and the reverberation adding means has been described, but the indistinct sound generating mechanism does not necessarily have to include the high frequency component reducing means and the reverberation adding means. .. The obscure sound generation mechanism may have, for example, only the above-mentioned signal dividing means and signal processing means.

When the voice processing system includes a second obscure sound generation mechanism that generates an unclear sound from the sound emitted outside the booth, the second obscure sound generation mechanism is not necessarily the other in which the remote conference terminal is arranged. There is no need to generate obscure sounds from the sounds emitted at the booth. For example, the second obscure sound generation mechanism may generate an unclear sound from the sound emitted in the main space.

Further, even when the second unclear sound generation mechanism generates unclear sound from the sound emitted at another booth in which the remote conference terminal is arranged, the voice processing system is specific to the other booth. The composition is not limited.

The voice processing system does not necessarily have to include the above-mentioned mixing mechanism even when the obscured sound based on the unclear sound generated by the second unclear sound generation mechanism is emitted in the main space. An example in the case where the above-mentioned mixing mechanism is not provided will be described with reference to FIG.

The audio processing system of FIG. 5 is used in an indoor space including a main space X3 and a booth Y4 (hereinafter, also referred to as “first booth Y4”) divided by the main space X3 and the partition P3. The voice processing system enables remote conferences between the first booth Y4 and another booth Y5 (hereinafter, also referred to as "second booth Y5") provided in an indoor space separate from the first booth Y4. It is configured as a remote conference system. In the voice processing system, remote conference terminals 33a and 33b are arranged in the first booth Y4 and the second booth Y5. The remote conference terminals 33a and 33b have a speaker and a microphone, and the sound collected by the microphones of one remote conference terminal 33a and 33b can be emitted from the speaker of the other remote conference terminals 33a and 33b. ing.

The voice processing system has a first indistinct sound generation mechanism 31 that generates an indistinct sound from the sound emitted in the first booth Y4, and a first indistinct sound that generates an indistinct sound from the sound emitted in the second booth Y5. In the unclear sound generation mechanism 32 of 2, the unclear sound based on the unclear sound generated by the first unclear sound generation mechanism 31, and the unclear sound generated by the second unclear sound generation mechanism 32. It is provided with a sound emitting mechanism 34 that emits an obscured sound based on the sound in the main space X3. The sound emitting mechanism 34 is composed of a pair of speakers 34a and 34b. The voice processing system emits an unclear sound based on the unclear sound generated by the first unclear sound generation mechanism 31 from one speaker 34a, and is generated by the second unclear sound generation mechanism 32. The obscured sound based on the unclear sound can be emitted from the other speaker 34b. That is, the voice processing system is configured so that the unclear sound generated by the first unclear sound generation mechanism 31 and the unclear sound generated by the second unclear sound generation mechanism 32 can be emitted by different systems. Has been done. The voice processing system can also emit an obscured voice over a conversation held at different locations. Therefore, in addition to the content of the remarks in the first booth Y4, it is possible to accurately suppress the sound emitted from the remote conference terminal 33a from leaking to the main space X3.

In the above-described embodiment, the configuration in which the speaker is attached to the partition that separates the booth and the main space where leakage of the content of the statement should be suppressed has been described, but the installation location of the speaker is limited to the configuration of the above-described embodiment. is not it. The voice processing device can adjust the degree of sharing of the atmosphere by selecting the arrangement of the speakers. As shown in FIG. 6, for example, when a plurality of booths Y6 and Y7 exist, the voice processing device is based on an unclear sound generated from a sound collected by a microphone 41a arranged in one booth Y6. The speaker 44b that emits the obscured sound may be attached to the partition P5 that separates the other booth Y7 and the main space X4. Further, in the voice processing device, the speaker 44a that emits the obscured sound based on the unclear sound generated from the sound collected by the microphone 41b arranged in the other booth Y7 is mainly used as the one booth Y6. It may be attached to the partition P4 that separates the space X4.

By installing a radiation panel that emits sound in the indoor space as needed, the sound processing system can make it difficult for the listener of the obscured sound existing in the main space to feel the presence of the sound source. is there.

The voice processing system can be used not only in an office space where an office space and a meeting booth are separated, but also in a lobby of a public space, for example.

As described above, the voice processing system and the voice processing device of the present invention can make it difficult for the conversation contents in the booth to be transmitted to the outside of the booth while suppressing giving a noise feeling to the person existing outside the booth. , Can be suitably applied to an office space in which an office space and a meeting booth are separated by a partition.

1,1,31 First unclear sound generation mechanism 22, 32 Second unclear sound generation mechanism 2, 24, 34 Sound generation mechanism 3 Sound collecting means 4 High frequency component reducing means 5 Reverberation adding means 6 Signal dividing means 7 Signal processing means 8 Synchronization means 11a, 11b, 41a, 41b Microphone 12 Obscuring processing unit 23a, 23b, 33a, 33b Remote conference terminal 25 Mixing mechanism 34a, 34b, 44a, 44b Speakers A1, A2 Tables B1, B2 Chairs P1 , P2, P3, P4, P5 Partition X1, X2, X3, X4 Main space Y1, Y2, Y3, Y4, Y5, Y6, Y7 Booth

Claims (4)

Used for a main space and an indoor space with one or more booths separated from this main space by a partition.
A first indistinct sound generation mechanism that generates an indistinct sound from the first sound emitted in the one or more booths, and
A second indistinct sound generation mechanism that generates an indistinct sound from a second sound emitted in another booth that holds a remote conference with the one or more booths.
A mechanism for emitting an unclear sound generated by the first unclear sound generation mechanism and an unclear sound based on the unclear sound generated by the second unclear sound generation mechanism into the main space. A voice processing system equipped. The voice processing system according to claim 1, wherein the first obscure sound generation mechanism has a means for reducing a high frequency component of the first sound and a means for adding reverberation to the sound after the reduction of the high frequency component. A mechanism for mixing the sound obtained by the first obscure sound generation mechanism and the sound obtained by the second obscure sound generation mechanism is further provided.
The voice processing system according to claim 1 or 2 , wherein the sound emitting mechanism emits an obscured sound mixed by the mixing mechanism. Used for a main space and an indoor space with one or more booths separated from this main space by a partition.
A first microphone for collecting the first sound in the one or more booths,
A second microphone that collects a second sound in another booth that holds a remote conference with the one or more booths, and a second microphone.
A first obscuration processing unit that obscures the first sound collected by the first microphone, and a first obscuration processing unit.
A second obscuration processing unit that obscures the second sound collected by the second microphone, and a second obscuration processing unit.
A speaker that emits an unclear sound based on the unclear sound generated by the first obscuring processing unit and the unclear sound generated by the second obscuring processing unit in the main space. A voice processing device to be equipped.

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