CN114007168A - Intelligent audio control system and method - Google Patents

Intelligent audio control system and method Download PDF

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Publication number
CN114007168A
CN114007168A CN202111294032.3A CN202111294032A CN114007168A CN 114007168 A CN114007168 A CN 114007168A CN 202111294032 A CN202111294032 A CN 202111294032A CN 114007168 A CN114007168 A CN 114007168A
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equipment
sound
partition
sound pickup
pickup equipment
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CN114007168B (en
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彭利红
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Changsha Chufeng Digital Technology Co ltd
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Changsha Chufeng Digital Technology Co ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/005—Circuits for transducers, loudspeakers or microphones for combining the signals of two or more microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/02—Circuits for transducers, loudspeakers or microphones for preventing acoustic reaction, i.e. acoustic oscillatory feedback
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2430/00—Signal processing covered by H04R, not provided for in its groups
    • H04R2430/20—Processing of the output signals of the acoustic transducers of an array for obtaining a desired directivity characteristic

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)

Abstract

The invention discloses an intelligent audio control system and a method, which are characterized in that a meeting place is partitioned according to the distribution of pickup equipment, so that each partition comprises the pickup equipment and corresponding public address equipment which is closest to the pickup equipment; then, an intelligent identification module is connected with the sound pickup equipment of each partition of the meeting place to detect the starting state of the sound pickup equipment of each partition and obtain a corresponding identification signal; the partition control module is connected with the intelligent identification module and the public address equipment of each partition of the meeting place, so that the volume of the public address equipment of each partition is adjusted according to the identification signal; when the volume of the sound amplifying equipment is adjusted, when the sound equipment of a certain partition is detected to be started, the volume of the sound amplifying equipment corresponding to the partition is adjusted to be smaller by a set range, and the volume of the sound amplifying equipment of other partitions is adjusted to be larger by the set range, so that the problem that when the sound equipment is started, sound emitted by the corresponding sound amplifying equipment is picked up by the sound equipment to form a closed loop self-excitation to generate howling is solved.

Description

Intelligent audio control system and method
Technical Field
The invention relates to the field of intelligent control, in particular to an intelligent audio control system and method.
Background
With the higher sensitivity of modern microphones, the problem of self-excited squeal of sound generated by the microphone is more difficult to control in multifunctional places such as meeting rooms. The sound squeal problem is generated by that the sound produced by the sound box is picked up by the microphone, thereby forming a closed loop self-excitation. At present, the main method for solving the problem is to suppress the sound frequency point of the sound field which is easy to form self-excitation feedback or reduce the sound volume of the whole field. The method for restraining the sound frequency point which is easy to form self-excitation feedback in the sound field can influence the sound quality of the sound, and the scheme of depressing the whole field sound volume can cause the whole field sound to be too small.
Disclosure of Invention
The invention aims to provide an intelligent audio control system and method, which are used for solving the problem of sound squeaking in a meeting place on the premise of ensuring the sound quality and the whole volume.
In order to achieve the purpose, the invention provides the following scheme:
an intelligent audio control system, the intelligent audio control system comprising:
the intelligent identification module is connected with the sound pickup equipment of each partition of the conference site and used for obtaining a corresponding identification signal when detecting that the sound pickup equipment of at least one partition is started;
the partition control module is respectively connected with the intelligent identification module, the sound pickup equipment of each partition of the meeting place and the sound amplification equipment of each partition of the meeting place, and is used for turning down the volume of the sound pickup equipment started corresponding to the sound amplification equipment by a first set amplitude according to the identification signals and turning up the volume of the sound amplification equipment of the rest partitions by a second set amplitude; the corresponding public address equipment is the public address equipment closest to the sound pickup equipment;
the partition control module is also used for distributing the audio signals collected by the pickup equipment to corresponding public address equipment.
Optionally, the intelligent identification module is a switching value detection device; and the switching value detection device obtains a corresponding identification signal when detecting that the switching value signal of the sound pickup equipment of at least one subarea is 'on'.
Optionally, the intelligent identification module is a voice control identification device; and the voice control identification device obtains a corresponding identification signal when detecting that sound larger than a set decibel exists around the sound pickup equipment of at least one subarea.
Optionally, the intelligent recognition module is an image recognition device; the image recognition device obtains a corresponding recognition signal when detecting the mouth shape change of a speaker in front of the sound pickup equipment of at least one zone.
Optionally, the sound pickup device is a microphone; the public address equipment is a sound box.
Optionally, the intelligent audio control system further comprises:
the audio compensation module is respectively connected with the intelligent identification module, the pickup equipment of each partition of the meeting place and the public address equipment of each partition of the meeting place, and is used for adjusting the sound frequency of the public address equipment of all the partitions of the meeting place according to the frequency characteristics and performing frequency compensation on the expanded sound; the frequency characteristics are determined according to the voice of a speaker in the partition corresponding to the activated sound pickup equipment.
The invention also provides an intelligent audio control method, which is applied to the intelligent audio control system and comprises the following steps:
partitioning the meeting place according to the distribution of sound pickup equipment and sound amplification equipment, so that each partition comprises the sound pickup equipment and the corresponding sound amplification equipment; the corresponding public address equipment is the public address equipment closest to the sound pickup equipment; detecting the starting state of the pickup equipment of each partition;
when detecting that the sound pickup equipment of at least one partition is started, turning down the volume of the corresponding sound amplification equipment of the started sound pickup equipment by a first set amplitude, and turning up the volume of the sound amplification equipment of the rest partitions by a second set amplitude.
Optionally, the detecting the activation state of the sound pickup apparatus of each partition specifically includes:
detecting switching value signals of the sound pickup equipment of each partition; when the switching value signal is detected to be on, the sound pickup equipment is in an enabled state, and when the switching value signal is detected to be off, the sound pickup equipment is in an unopened state;
or detecting whether sound larger than a set decibel exists around the sound pickup equipment of each subarea; when the sound larger than the set decibel around the sound pickup equipment is detected, the sound pickup equipment is in an enabled state, and when the sound larger than the set decibel around the sound pickup equipment is not detected, the sound pickup equipment is in an disabled state;
or detecting whether the mouth shape of a speaker in front of the sound pickup equipment of each partition is changed; when the mouth shape of the speaker is detected to be changed, the sound pickup equipment is in an activated state, and when the mouth shape of the speaker is detected to be unchanged, the sound pickup equipment is in an inactivated state.
Optionally, after detecting the activation state of the pickup apparatus of each partition, the method further includes:
identifying the frequency characteristics of the voice of a speaker in the partition corresponding to the started sound pickup equipment;
and adjusting the sound frequencies of the public address equipment of all the partitions of the meeting place according to the frequency characteristics, and performing frequency compensation on the expanded sound.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the invention provides an intelligent audio control system and a method, which are characterized in that a meeting place is partitioned according to the distribution of sound pickup equipment and sound amplification equipment, so that each partition comprises the sound pickup equipment and the corresponding sound amplification equipment which is closest to the sound pickup equipment; then, an intelligent identification module is connected with the sound pickup equipment of each partition of the meeting place to detect the starting state of the sound pickup equipment of each partition and obtain a corresponding identification signal; the partition control module is connected with the intelligent identification module and the public address equipment of each partition of the meeting place, so that the volume of the public address equipment of each partition is adjusted according to the identification signal; when the volume of the sound amplifying equipment is adjusted, when the sound amplifying equipment of a certain partition is detected to be started, the volume of the corresponding sound amplifying equipment of the partition is adjusted to be smaller for setting amplitude, the volume of the sound amplifying equipment of other partitions is adjusted to be larger for setting amplitude, the sound amplifying volume of the partition started by the sound amplifying equipment is a weak area, sound is not easy to enter the sound amplifying equipment, the sound amplifying volume of other partitions is a strong area, and therefore the problem that the sound emitted by the sound amplifying equipment corresponding to the partition started by the sound amplifying equipment is picked up by the sound amplifying equipment to form closed loop self excitation and generate howling is solved. Meanwhile, the frequency point is easy to feed back without inhibiting the sound field, and the sound volume of the whole field is not required to be reduced, so that the sound quality of the meeting place sound and the volume of the whole field are ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
Fig. 1 is a block diagram of an intelligent audio control system according to the present invention;
fig. 2 is a schematic diagram of a typical application of an intelligent audio control system provided by the present invention.
Description of the symbols: intelligent recognition module-1, audio input line-2, audio frequency subregion output line-3, subregion control module-4, control line-5, intelligent audio control system-6, control input line-7, other audio control equipment-8, one district public address equipment-9, two district public address equipment-10, three district public address equipment-11, one district's adapter equipment-12, two district's adapter equipment-13, three district's adapter equipment-14.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide an intelligent audio control system and method, which are used for solving the problem of sound squeaking in a meeting place on the premise of ensuring the sound quality and the whole volume.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Fig. 1 is a block diagram of an intelligent audio control system according to the present invention, and as shown in fig. 1, an intelligent audio control system 6 according to the present invention includes an intelligent identification module 1 and a partition control module 4.
Specifically, the intelligent identification module 1 is connected with the sound pickup equipment of each partition of the meeting place through the control input line 7, and is used for obtaining a corresponding identification signal when detecting that the sound pickup equipment of at least one partition is enabled.
The partition control module 4 is respectively connected with the intelligent identification module 1, the sound pickup equipment of each partition of the meeting place and the sound amplification equipment of each partition of the meeting place, and is used for turning down the volume of the corresponding sound amplification equipment which starts the sound pickup equipment by a first set amplitude according to the identification signal and turning up the volume of the sound amplification equipment of the rest partitions by a second set amplitude; the corresponding public address equipment is the public address equipment which is closest to the sound pickup equipment.
In addition, the partition control module 4 is further configured to distribute the audio signal collected by the sound pickup apparatus to a corresponding sound amplifying apparatus.
In this embodiment, the whole meeting place comprises at least one partition, and each partition comprises a sound pickup device and a sound amplification device closest to the sound pickup device. The partition control module 4 is connected with the sound pickup equipment of each partition of the meeting place through the audio input line 2; the partition control module 4 is connected with the intelligent identification module 1 through a control line 5; the subarea control module 4 is connected with the sound amplifying equipment of each subarea of the meeting place through the audio subarea output line 3. The first setting range and the second setting range are both prefabricated and stored in the partition control module 4 in advance through instrument analysis and debugging in the system installation and debugging process.
Optionally, the intelligent recognition module 1 may be a switching value detection device, a voice control recognition device, or an image recognition device, but is not limited thereto, and may be adjusted according to actual needs.
Specifically, when the intelligent identification module 1 is a switching value detection device, the switching value detection device obtains a corresponding identification signal when detecting that a switching value signal of the sound pickup equipment of at least one partition is "on".
When the intelligent identification module is a voice control identification device, the voice control identification device obtains a corresponding identification signal when detecting that sound larger than a set decibel exists around the sound pickup equipment of at least one subarea.
When the intelligent recognition module is an image recognition device, the image recognition device obtains a corresponding recognition signal when detecting that the mouth shape of a speaker in front of the sound pickup equipment of at least one subarea is changed.
Preferably, the sound pickup device is a microphone; correspondingly, the public address equipment is a sound box.
Further, the intelligent audio control system also comprises an audio compensation module. And the audio compensation module is respectively connected with the intelligent identification module 1, the pickup equipment of each partition of the meeting place and the public address equipment of each partition of the meeting place.
The intelligent identification module 1 is also used for identifying the frequency characteristics of the voice of the speaker in the partition started by the pickup equipment; the audio compensation module is used for adjusting the sound frequency of the public address equipment of all the partitions of the meeting place according to the frequency characteristics and performing frequency compensation on the expanded sound, so that the sound quality of the meeting place is improved.
Preferably, for a complex meeting place condition with a main meeting place and a plurality of branch meeting places, the plurality of intelligent audio control systems are respectively arranged in the main meeting place and the branch meeting places and are respectively connected with the embedded WEB servers of the meeting places. Meanwhile, WEB server addresses of all branch meeting places are embedded in the embedded WEB server of the main meeting place. The intelligent audio control system can not only perform centralized control on all the equipment of the main meeting place, but also perform centralized control on all the equipment of the sub-meeting place through a network, thereby forming a unified control whole. By embedding the address of the WEB server of the branch meeting place in the embedded WEB server of the main meeting place, when the branch meeting place has a problem, the operation on equipment of the branch meeting place can be finished by directly logging in the embedded WEB server of the branch meeting place in the main meeting place as long as the network is communicated.
Fig. 2 is a schematic diagram of a typical application of an intelligent audio control system according to the present invention, as shown in fig. 2, the whole meeting place is divided into three partitions, and each partition includes a sound pickup device and a corresponding sound amplifying device.
Wherein, a zone of sound pickup equipment 12 corresponds to a zone of sound amplification equipment 9 which is closest to the zone of sound pickup equipment 12; the second-zone sound pickup equipment 13 corresponds to the second-zone sound amplification equipment 10 closest to the second-zone sound pickup equipment 13; three-region sound pickup equipment 14 corresponds three-region public address equipment 11 that is nearest with three-region sound pickup equipment 14.
When a zone of sound pickup apparatus 12 is enabled, smart identification module 1 detects that a zone of sound pickup apparatus 12 is enabled, obtains a corresponding identification signal, and sends the identification signal to zone control module 4 through control line 5. The partition control module 4 sends an instruction to the first-partition sound-amplifying device 9 corresponding to the first-partition sound-pickup device 12 according to the identification signal, so as to turn down the volume of the first-partition sound-amplifying device 9, and simultaneously sends an instruction to the sound-amplifying devices of other areas (namely, the second-partition sound-amplifying device 10 and the third-partition sound-amplifying device 11), so as to turn up the volume of the sound-amplifying devices of other areas appropriately. The same can be said when the two-zone sound pickup apparatus 13 or the three-zone sound pickup apparatus 14 is activated. The intelligent audio control system is used for automatically adjusting the volume of each area, thereby avoiding howling caused by self-excitation and increasing the volume of the whole field.
In this embodiment, the volume of the public address equipment in each zone is adjusted according to the field condition, and the volume is preset data through instrument analysis and debugging during installation and debugging. When the sound-gathering device is used, the volume of each regional sound-amplifying device can be intelligently and automatically adjusted according to different positions of the sound-gathering device, so that the whole system can stably and reliably work, and howling cannot be generated. For the whole meeting place, the sound amplification volume of the area where the sound pickup equipment is started is a weak area, and sound cannot easily enter the sound pickup equipment. The amplified sound volume of other areas is a strong area, which ensures that the sound volume of the whole meeting place is large enough, the frequency of the sound is not changed, and the tone quality effect of the whole place of sound is not changed. Moreover, under the conditions that the meeting place range is fixed and the sound pickup equipment and the sound amplifying equipment are uniformly distributed, the more the number of the partitions is, the more accurate the control is, and the better the achieved effect is
In addition, as shown in fig. 2, the intelligent audio control system provided by the present invention further includes other audio control devices 8, and the other audio control devices 8 are respectively connected to the sound pickup device and the partition control module 4 of each partition of the meeting place, and are used for performing various processing on the audio signal. Since the processing methods are different and can be adjusted according to actual needs, and are not within the scope of the patent discussion, further description is omitted here.
The invention also provides an intelligent audio control method, which comprises the following steps:
step S1: carry out the subregion according to the distribution of adapter equipment and public address equipment to the meeting place, make every subregion all include an adapter equipment and one and correspond public address equipment, correspond public address equipment be with the closest public address equipment of adapter equipment distance.
Step S2: the activation state of the pickup of each zone is detected.
Step S3: when detecting that the sound pickup equipment of at least one partition is started, turning down the volume of the corresponding sound amplification equipment of the started sound pickup equipment by a first set amplitude, and turning up the volume of the sound amplification equipment of the rest partitions by a second set amplitude.
Preferably, the detecting the activation state of the sound pickup apparatus of each partition specifically includes:
detecting switching value signals of the sound pickup equipment of each partition; when the switching value signal is detected to be on, the sound pickup equipment is in an activated state, and when the switching value signal is detected to be off, the sound pickup equipment is in an inactivated state.
Or detecting whether sound larger than a set decibel exists around the sound pickup equipment of each subarea; when the sound larger than the set decibel around the sound pickup equipment is detected, the sound pickup equipment is in the starting state, and when the sound larger than the set decibel around the sound pickup equipment is not detected, the sound pickup equipment is in the non-starting state.
Or detecting whether the mouth shape of a speaker in front of the sound pickup equipment of each partition is changed; when the mouth shape of the speaker is detected to be changed, the sound pickup equipment is in an activated state, and when the mouth shape of the speaker is detected to be unchanged, the sound pickup equipment is in an inactivated state.
Preferably, after detecting the activation state of the pickup of each zone, the method further includes:
step S4: and identifying the frequency characteristics of the voice of the speaker in the partition corresponding to the activated pickup equipment.
Step S5: and adjusting the sound frequencies of the public address equipment of all the partitions of the meeting place according to the frequency characteristics, and performing frequency compensation on the expanded sound.
The intelligent audio control method provided by the invention corresponds to the intelligent audio control system, and the same parts are not repeated.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to assist in understanding the core concepts of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.

Claims (9)

1. An intelligent audio control system, comprising:
the intelligent identification module is connected with the sound pickup equipment of each partition of the conference site and used for obtaining a corresponding identification signal when detecting that the sound pickup equipment of at least one partition is started;
the partition control module is respectively connected with the intelligent identification module, the sound pickup equipment of each partition of the meeting place and the sound amplification equipment of each partition of the meeting place, and is used for turning down the volume of the sound pickup equipment started corresponding to the sound amplification equipment by a first set amplitude according to the identification signals and turning up the volume of the sound amplification equipment of the rest partitions by a second set amplitude; the corresponding public address equipment is the public address equipment closest to the sound pickup equipment;
the partition control module is also used for distributing the audio signals collected by the pickup equipment to corresponding public address equipment.
2. The intelligent audio control system according to claim 1, wherein the intelligent identification module is a switching value detection device; and the switching value detection device obtains a corresponding identification signal when detecting that the switching value signal of the sound pickup equipment of at least one subarea is 'on'.
3. The intelligent audio control system according to claim 1, wherein the intelligent recognition module is a voice-controlled recognition device; and the voice control identification device obtains a corresponding identification signal when detecting that sound larger than a set decibel exists around the sound pickup equipment of at least one subarea.
4. The intelligent audio control system of claim 1, wherein the intelligent recognition module is an image recognition device; the image recognition device obtains a corresponding recognition signal when detecting the mouth shape change of a speaker in front of the sound pickup equipment of at least one zone.
5. The intelligent audio control system of claim 1, wherein the sound pickup device is a microphone; the public address equipment is a sound box.
6. The intelligent audio control system of claim 1, further comprising:
the audio compensation module is respectively connected with the intelligent identification module, the pickup equipment of each partition of the meeting place and the public address equipment of each partition of the meeting place, and is used for adjusting the sound frequency of the public address equipment of all the partitions of the meeting place according to the frequency characteristics and performing frequency compensation on the expanded sound; the frequency characteristics are determined according to the voice of a speaker in the partition corresponding to the activated sound pickup equipment.
7. An intelligent audio control method applied to the intelligent audio control system according to claim 1, the intelligent audio control method comprising:
partitioning the meeting place according to the distribution of sound pickup equipment and sound amplification equipment, so that each partition comprises the sound pickup equipment and the corresponding sound amplification equipment; the corresponding public address equipment is the public address equipment closest to the sound pickup equipment; detecting the starting state of the pickup equipment of each partition;
when detecting that the sound pickup equipment of at least one partition is started, turning down the volume of the corresponding sound amplification equipment of the started sound pickup equipment by a first set amplitude, and turning up the volume of the sound amplification equipment of the rest partitions by a second set amplitude.
8. The intelligent audio control method according to claim 7, wherein the detecting the activation state of the sound pickup device of each partition specifically includes:
detecting switching value signals of the sound pickup equipment of each partition; when the switching value signal is detected to be on, the sound pickup equipment is in an enabled state, and when the switching value signal is detected to be off, the sound pickup equipment is in an unopened state;
or detecting whether sound larger than a set decibel exists around the sound pickup equipment of each subarea; when the sound larger than the set decibel around the sound pickup equipment is detected, the sound pickup equipment is in an enabled state, and when the sound larger than the set decibel around the sound pickup equipment is not detected, the sound pickup equipment is in an disabled state;
or detecting whether the mouth shape of a speaker in front of the sound pickup equipment of each partition is changed; when the mouth shape of the speaker is detected to be changed, the sound pickup equipment is in an activated state, and when the mouth shape of the speaker is detected to be unchanged, the sound pickup equipment is in an inactivated state.
9. The intelligent audio control method of claim 7, further comprising, after detecting the activation status of the tone pickup device of each zone:
identifying the frequency characteristics of the voice of a speaker in the partition corresponding to the started sound pickup equipment;
and adjusting the sound frequencies of the public address equipment of all the partitions of the meeting place according to the frequency characteristics, and performing frequency compensation on the expanded sound.
CN202111294032.3A 2021-11-03 Intelligent audio control system and method Active CN114007168B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111294032.3A CN114007168B (en) 2021-11-03 Intelligent audio control system and method

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Application Number Priority Date Filing Date Title
CN202111294032.3A CN114007168B (en) 2021-11-03 Intelligent audio control system and method

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Publication Number Publication Date
CN114007168A true CN114007168A (en) 2022-02-01
CN114007168B CN114007168B (en) 2024-07-16

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JP2008312002A (en) * 2007-06-15 2008-12-25 Yamaha Corp Television conference apparatus
US20090161900A1 (en) * 2007-12-21 2009-06-25 Tandberg Telecom As Microphone assembly for minimizing acoustic feedback from a loudspeaker
JP2013005106A (en) * 2011-06-14 2013-01-07 Nippon Telegr & Teleph Corp <Ntt> In-house sound amplification system, in-house sound amplification method, and program therefor
CN103002392A (en) * 2011-09-13 2013-03-27 联想(北京)有限公司 Audio feedback processing method and intelligent device
CN105142089A (en) * 2015-06-25 2015-12-09 厦门一心智能科技有限公司 Onsite classroom pickup and loudspeaking system adapted to position of a speaker
CN109640224A (en) * 2018-12-26 2019-04-16 北京猎户星空科技有限公司 A kind of sound pick-up method and device
CN111048066A (en) * 2019-11-18 2020-04-21 云知声智能科技股份有限公司 Voice endpoint detection system assisted by images on child robot
CN112634895A (en) * 2020-12-25 2021-04-09 苏州思必驰信息科技有限公司 Voice interaction wake-up-free method and device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008312002A (en) * 2007-06-15 2008-12-25 Yamaha Corp Television conference apparatus
US20090161900A1 (en) * 2007-12-21 2009-06-25 Tandberg Telecom As Microphone assembly for minimizing acoustic feedback from a loudspeaker
JP2013005106A (en) * 2011-06-14 2013-01-07 Nippon Telegr & Teleph Corp <Ntt> In-house sound amplification system, in-house sound amplification method, and program therefor
CN103002392A (en) * 2011-09-13 2013-03-27 联想(北京)有限公司 Audio feedback processing method and intelligent device
CN105142089A (en) * 2015-06-25 2015-12-09 厦门一心智能科技有限公司 Onsite classroom pickup and loudspeaking system adapted to position of a speaker
CN109640224A (en) * 2018-12-26 2019-04-16 北京猎户星空科技有限公司 A kind of sound pick-up method and device
CN111048066A (en) * 2019-11-18 2020-04-21 云知声智能科技股份有限公司 Voice endpoint detection system assisted by images on child robot
CN112634895A (en) * 2020-12-25 2021-04-09 苏州思必驰信息科技有限公司 Voice interaction wake-up-free method and device

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