CN107249116B - Noise echo eliminating device based on video conference - Google Patents
Noise echo eliminating device based on video conference Download PDFInfo
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- CN107249116B CN107249116B CN201710673101.9A CN201710673101A CN107249116B CN 107249116 B CN107249116 B CN 107249116B CN 201710673101 A CN201710673101 A CN 201710673101A CN 107249116 B CN107249116 B CN 107249116B
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- 238000001514 detection method Methods 0.000 claims abstract description 22
- 230000008030 elimination Effects 0.000 claims description 9
- 238000003379 elimination reaction Methods 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 9
- 230000003044 adaptive effect Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/15—Conference systems
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
- G10L2021/02082—Noise filtering the noise being echo, reverberation of the speech
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- Audiology, Speech & Language Pathology (AREA)
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Abstract
The invention discloses a noise echo eliminating device based on a video conference, which comprises a plurality of microphone modules, wherein the microphone modules are connected with a microphone switch module through a CAN bus; each microphone module is connected with an audio vibration module and a voice detection module; the voice detection module: detecting voice information of a microphone module, and sending the voice information to an SIP control center; the audio vibration module: detecting audio vibration information of a microphone module, and sending the audio vibration information to an SIP control center; the SIP control center: receiving voice information of a voice detection module, comparing the voice information with a database, judging whether the content of the voice information comprises preset voice X or not, and sending a microphone closing instruction to a microphone switching module when the content of the voice information comprises the preset voice X; microphone switch module received instruction and closed corresponding microphone module, continues to receive the vibrations information that audio frequency vibrations module sent, sends and opens microphone instruction to microphone switch module, microphone switch module receives and opens the instruction and open corresponding microphone module.
Description
Technical Field
The invention relates to an echo eliminating system, in particular to a noise echo eliminating device based on a video conference.
Background
The development of network video conference systems is faster and faster, and more companies and government departments start using the network video conference systems to improve the work efficiency. One of the main problems faced in running multimedia applications such as conference based voice and video in a corporate network is how to manage echo cancellation in a conference.
Disclosure of Invention
The technical problem to be solved by the invention is how to manage and eliminate echo in a conference in a company network for running multimedia applications such as conference-based voice and video, and the invention aims to provide a noise echo eliminating device based on a video conference, and solve the problem of how to manage and eliminate echo in a conference in a company network for running multimedia applications such as conference-based voice and video.
The invention is realized by the following technical scheme:
the noise echo eliminating device based on the video conference comprises a plurality of microphone modules, wherein the microphone modules are connected with a microphone switch module through a CAN bus; each microphone module is connected with an audio vibration module and a voice detection module; the voice detection module: detecting voice information of a microphone module, and sending the voice information to an SIP control center; the audio vibration module: detecting audio vibration information of a microphone module, and sending the audio vibration information to an SIP control center; the SIP control center: receiving voice information of a voice detection module, comparing the voice information with a database, judging whether the content of the voice information comprises preset voice X or not, and sending a microphone closing instruction to a microphone switching module when the content of the voice information comprises the preset voice X; the microphone switch module receives the instruction and closes the corresponding microphone module, continues to receive vibration information sent by the audio vibration module, and sends a microphone opening instruction to the microphone switch module, and the microphone switch module receives the opening instruction and opens the corresponding microphone module; and when the preset voice X is not included, continuously receiving the voice detection module information and not receiving the vibration information of the audio vibration module. The invention aims to solve the technical problem that how to manage and eliminate echo in a conference when a multimedia application program such as voice and video based on the conference is operated in a company network, and aims to provide a noise echo eliminating device based on the video conference, the invention eliminates the echo from a microphone part, each microphone is in an open state in the existing video conference, thereby bringing two problems, when a first multi-azimuth speaks simultaneously, a person at the other end of the conference cannot hear the voice, and a second multi-azimuth simultaneously speaks to increase noise and echo, the invention adopts a microphone unified control switch to control through a CAN bus, firstly, a voice detection module and an audio vibration module are arranged in each microphone module, for an SIP control center, the information of the voice detection module is firstly received, when detecting preset pronunciation X, send and close the instruction, open the microphone module at the information that sends through the audio frequency vibrations module of accepting, only one microphone module opens at whole in-process, just so avoided traditional problem not enough. The preset X voice may be "the user finishes speaking", "please next bit", and the specific content may be set arbitrarily.
The microphone module is connected with the CAN bus through the relay module. Further, the preferred embodiment of the present invention is described below.
And the SIP control center receives the first audio vibration information according to the sequence of the information sent by the audio vibration module. Further, the preferred embodiment of the present invention is described below.
The SIP control center receives the voice information of the voice detection module and sends the voice information to the echo elimination module, the echo elimination module receives the voice information and eliminates an echo, and the voice information after the echo elimination is sent to the adaptive filtering module; the adaptive filtering module: and receiving the voice information of the echo eliminating module, and sending the voice information to the voice sending module after filtering. Further, the preferred embodiment of the present invention is described below.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the invention is based on the noise echo eliminating device of the video conference, the microphone unifies the control switch, control through CAN bus, set up a pronunciation detection module and audio frequency shake module in each microphone module at first, as to SIP control center, receive the information of the pronunciation detection module first, when detecting and preserving the pronunciation X, send and close the order, open the microphone module through the information that the audio frequency shake module that is received sends, only one microphone module is opened in the whole process, in this way, has avoided the deficiency of the traditional problem;
2. according to the noise echo eliminating device based on the video conference, the microphone module is connected with the CAN bus through the relay module, so that the on-off control is better, the relay response time is fast, and the microphone CAN be turned on under the condition of no pause;
3. the noise echo eliminating device based on the video conference, disclosed by the invention, is characterized in that the SIP control center receives the first audio vibration information according to the sequence of the information sent by the audio vibration module, and further ensures the opening of a microphone.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic view of the structure of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Examples
As shown in fig. 1, the noise echo cancellation device based on the video conference of the present invention includes 3 microphone modules, wherein the microphone modules are connected with a microphone switch module through a CAN bus; each microphone module is connected with an audio vibration module and a voice detection module; the voice detection module adopts a TL-8017 model: detecting voice information of a microphone module, and sending the voice information to an SIP control center; the audio vibration module adopts a YTL-028M model: detecting audio vibration information of a microphone module, and sending the audio vibration information to an SIP control center; the SIP control center: receiving voice information of a voice detection module, comparing the voice information with a database, judging whether the content of the voice information comprises preset voice X or not, and sending a microphone closing instruction to a microphone switching module when the content of the voice information comprises the preset voice X; the microphone switch module receives the instruction and closes the corresponding microphone module, continues to receive vibration information sent by the audio vibration module, and sends a microphone opening instruction to the microphone switch module, and the microphone switch module receives the opening instruction and opens the corresponding microphone module; when the preset voice X is not included, continuously receiving the voice detection module information and not receiving the vibration information of the audio vibration module; the microphone module is connected with the CAN bus through the relay module. And the SIP control center receives the first audio vibration information according to the sequence of the information sent by the audio vibration module. The SIP control center receives the voice information of the voice detection module and sends the voice information to the echo elimination module, the echo elimination module receives the voice information and eliminates an echo, and the voice information after the echo elimination is sent to the adaptive filtering module; the adaptive filtering module: and receiving the voice information of the echo eliminating module, and sending the voice information to the voice sending module after filtering.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (2)
1. Noise echo remove device based on videoconference, its characterized in that: the microphone switch comprises a plurality of microphone modules, wherein the microphone modules are connected with a microphone switch module through a CAN bus; each microphone module is connected with an audio vibration module and a voice detection module; only one microphone module is started in the whole process;
the voice detection module: detecting voice information of a microphone module, and sending the voice information to an SIP control center;
the audio vibration module: detecting audio vibration information of a microphone module, and sending the audio vibration information to an SIP control center;
the SIP control center: receiving the voice information of the voice detection module of the currently started microphone module, comparing the voice information with a database to determine whether the content of the voice information comprises a preset voice X,
when voice X is preset, a microphone closing instruction is sent to a microphone switch module, the microphone switch module receives the instruction and closes a corresponding microphone module, vibration information sent by all audio vibration modules is continuously received, a microphone opening instruction is sent to the microphone switch module according to the first audio vibration information in the information sending sequence of all audio vibration modules, and the microphone switch module receives an opening instruction and opens the corresponding microphone module;
when the preset voice X is not included, the current voice detection module information is continuously received, and all the audio vibration modules are not received;
the microphone module is connected with the CAN bus through the relay module;
and the SIP control center receives the first audio vibration information according to the sequence of the information sent by the audio vibration module.
2. The noise echo cancellation device according to claim 1, wherein: the SIP control center receives the voice information of the voice detection module and sends the voice information to the echo elimination module, the echo elimination module receives the voice information and eliminates an echo, and the voice information after the echo elimination is sent to the adaptive filtering module;
the adaptive filtering module: and receiving the voice information of the echo eliminating module, and sending the voice information to the voice sending module after filtering.
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| CN201710673101.9A CN107249116B (en) | 2017-08-09 | 2017-08-09 | Noise echo eliminating device based on video conference |
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| CN107945798B (en) * | 2017-12-18 | 2021-06-15 | 浙江一通电气有限公司 | Intelligent voice recognition touch switch and control method thereof |
| CN109274922A (en) * | 2018-11-19 | 2019-01-25 | 国网山东省电力公司信息通信公司 | A kind of Video Conference Controlling System based on speech recognition |
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| CN107249116A (en) | 2017-10-13 |
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