CN107249116A - Noise echo eliminating device based on video conference - Google Patents

Noise echo eliminating device based on video conference Download PDF

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Publication number
CN107249116A
CN107249116A CN201710673101.9A CN201710673101A CN107249116A CN 107249116 A CN107249116 A CN 107249116A CN 201710673101 A CN201710673101 A CN 201710673101A CN 107249116 A CN107249116 A CN 107249116A
Authority
CN
China
Prior art keywords
module
microphone
audio frequency
frequency vibration
voice
Prior art date
Application number
CN201710673101.9A
Other languages
Chinese (zh)
Inventor
赵晓东
赵世戌
Original Assignee
成都全云科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 成都全云科技有限公司 filed Critical 成都全云科技有限公司
Priority to CN201710673101.9A priority Critical patent/CN107249116A/en
Publication of CN107249116A publication Critical patent/CN107249116A/en

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Classifications

    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208Noise filtering
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/14Systems for two-way working
    • H04N7/15Conference systems
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208Noise filtering
    • G10L2021/02082Noise filtering the noise being echo, reverberation of the speech

Abstract

The invention discloses the noise echo eliminating device based on video conference, including multiple microphone modules, the microphone module is connected by CAN with microphone switch module;Each microphone module connects an audio frequency vibration module and a speech detection module;The speech detection module:The voice messaging of microphone module is detected, is sent to SIP control centres;The audio frequency vibration module:The audio frequency vibration information of microphone module is detected, is sent to SIP control centres;The SIP control centres:The voice messaging of speech detection module is received, is contrasted with database, whether the speech information content includes presetting voice X, including during default voice X, sends and closes microphone instruction to microphone switch module;The microphone switch module, which is received, to be instructed and closes corresponding microphone module, continues to the vibration information of audio frequency vibration module transmission, is sent unlatching microphone instruction and is arrived microphone switch module, the microphone switch module receives open command and opens corresponding microphone module.

Description

Noise echo eliminating device based on video conference

Technical field

The present invention relates to a kind of echo cancellation system, and in particular to the noise echo eliminating device based on video conference.

Background technology

The development of Video Conference System is more and more faster, while increasing company and government department all begins to use Video Conference System, to improve operating efficiency.The many of such as voice and video based on meeting are run in corporate networks The subject matter that media application is faced is how to manage the echo eliminated in meeting.

The content of the invention

The technical problems to be solved by the invention are to run such as voice and video based on meeting in corporate networks The subject matter that multimedia application is faced is how to manage the echo eliminated in meeting, it is therefore intended that offer is based on The noise echo eliminating device of video conference, solves to run many matchmakers of such as voice and video based on meeting in corporate networks The subject matter that body application program is faced is how to manage the problem of eliminating the echo in meeting.

The present invention is achieved through the following technical solutions:

Noise echo eliminating device based on video conference, including multiple microphone modules, the microphone module pass through CAN Bus is connected with microphone switch module;Each microphone module connects an audio frequency vibration module and a speech detection module; The speech detection module:The voice messaging of microphone module is detected, is sent to SIP control centres;The audio frequency vibration module:Inspection The audio frequency vibration information of microphone module is surveyed, is sent to SIP control centres;The SIP control centres:Receive speech detection module Voice messaging, is contrasted with database, and whether the speech information content includes default voice X, including during default voice X, is sent Close microphone instruction and arrive microphone switch module;The microphone switch module, which is received, to be instructed and closes corresponding microphone module, is continued The vibration information that audio frequency vibration module is sent is received, unlatching microphone instruction is sent and arrives microphone switch module, the microphone switch mould Block receives open command and opens corresponding microphone module;When not including default voice X, speech detection module letter is continued to Breath, and the vibration information of audio frequency vibration module is not received.The technical problems to be solved by the invention are to run in corporate networks The subject matter that the multimedia application of such as voice and video based on meeting is faced is how to manage elimination meeting Echo in view, it is therefore intended that provide the noise echo eliminating device based on video conference, the present invention is eliminated from microphone part Echo, in existing video conference, each microphone is in order at the state of unlatching, so brings two problems, first It is multi-faceted while when speaking, the people that can cause the meeting other end can hear, second it is multi-faceted and meanwhile speak increase noise and Echo, the present invention employs, microphone is uniformly controlled switch in order to solve this problem, is controlled, existed first by CAN One speech detection module and audio frequency vibration module are set inside each microphone module, for SIP control centres, first received The information of speech detection module, when detecting default voice X, sends out code, in the audio frequency vibration module by receiving The information of transmission carries out unlatching microphone module, and only one of which microphone module is opened in whole process, so avoids tradition The deficiency of problem.Default X voices can be " I speech finish " " ask the visitor in next bit " etc., and this specific content can be with Meaning is set.

The microphone module is connected by relay module and CAN.Further, as the preferred scheme of the present invention.

The SIP control centres, the order for sending information by audio frequency vibration module receives first audio frequency vibration information.Enter One step, is used as the preferred scheme of the present invention.

The SIP control centres, receive the voice messaging of speech detection module, send to echo cancellation module, described time Sound cancellation module receives voice messaging and eliminates echo, sends and eliminates the voice messaging after echo to adaptive-filtering module;Institute State adaptive-filtering module:Sent after receiving the voice messaging of echo cancellation module, filtering process to voice sending module.Enter one Step, is used as the preferred scheme of the present invention.

The present invention compared with prior art, has the following advantages and advantages:

1st, the noise echo eliminating device based on video conference of the invention, microphone is uniformly controlled switch, by CAN come Control, sets a speech detection module and audio frequency vibration module, for SIP controls inside each microphone module first Center, first receives the information of speech detection module, when detecting default voice X, out code is sent, in the sound by receiving The information that frequency shock module is sent carries out unlatching microphone module, and only one of which microphone module is opened in whole process, thus Avoid the deficiency of traditional problem;

2nd, the noise echo eliminating device of the invention based on video conference, microphone module is total by relay module and CAN Line is connected, preferably switch control, and the relay reaction time is rapid, and the unlatching of microphone can be carried out in the case where not stopping;

3rd, the noise echo eliminating device of the invention based on video conference, SIP control centres, are sent by audio frequency vibration module The order of information receives first audio frequency vibration information, further ensure that the unlatching of a microphone.

Brief description of the drawings

Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, constitutes one of the application Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings:

Fig. 1 is schematic structural view of the invention.

Embodiment

For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment and accompanying drawing, to this Invention is described in further detail, and exemplary embodiment and its explanation of the invention is only used for explaining the present invention, does not make For limitation of the invention.

Embodiment

As shown in figure 1, the noise echo eliminating device of the invention based on video conference, including 3 microphone modules, the words Cylinder mould block is connected by CAN with microphone switch module;Each microphone module connects an audio frequency vibration module and one Individual speech detection module;The speech detection module uses TL-8017 models:The voice messaging of microphone module is detected, is sent extremely SIP control centres;The audio frequency vibration module uses YTL-028M models:The audio frequency vibration information of microphone module is detected, is sent To SIP control centres;The SIP control centres:The voice messaging of speech detection module is received, is contrasted with database, institute's predicate Whether the sound information content includes default voice X, including during default voice X, sends closing microphone instruction and arrive microphone switch module;Institute State microphone switch module to receive instruction and close corresponding microphone module, continue to the vibrations letter of audio frequency vibration module transmission Breath, sends and opens microphone instruction to microphone switch module, if the microphone switch module receives open command and opens correspondence Cylinder mould block;When not including default voice X, speech detection module information is continued to, and do not receive the vibrations of audio frequency vibration module Information;The microphone module is connected by relay module and CAN.The SIP control centres, are sent out by audio frequency vibration module Deliver letters breath order receive first audio frequency vibration information.The SIP control centres, receive the voice letter of speech detection module Breath, sends to echo cancellation module, and the echo cancellation module receives voice messaging and eliminates echo, sends and eliminates after echo Voice messaging is to adaptive-filtering module;The adaptive-filtering module:Receive at the voice messaging of echo cancellation module, filtering Sent after reason to voice sending module.

Above-described embodiment, has been carried out further to the purpose of the present invention, technical scheme and beneficial effect Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc. all should be included Within protection scope of the present invention.

Claims (4)

1. the noise echo eliminating device based on video conference, it is characterised in that:Including multiple microphone modules, the microphone module It is connected by CAN with microphone switch module;Each microphone module connects an audio frequency vibration module and a voice Detection module;
The speech detection module:The voice messaging of microphone module is detected, is sent to SIP control centres;
The audio frequency vibration module:The audio frequency vibration information of microphone module is detected, is sent to SIP control centres;
The SIP control centres:The voice messaging of speech detection module is received, is contrasted with database, the speech information content Whether default voice X is included,
During including default voice X, send and close microphone instruction to microphone switch module;The microphone switch module receives instruction simultaneously Corresponding microphone module is closed, the vibration information of audio frequency vibration module transmission is continued to, sends and opens microphone instruction to microphone Switch module, the microphone switch module receives open command and opens corresponding microphone module;
When not including default voice X, speech detection module information is continued to, and does not receive the vibrations letter of audio frequency vibration module Breath.
2. the noise echo eliminating device according to claim 1 based on video conference, it is characterised in that:The microphone mould Block is connected by relay module and CAN.
3. the noise echo eliminating device according to claim 1 based on video conference, it is characterised in that:The SIP controls Center processed, the order for sending information by audio frequency vibration module receives first audio frequency vibration information.
4. the noise echo eliminating device according to claim 1 based on video conference, it is characterised in that:The SIP controls Center processed, receives the voice messaging of speech detection module, sends to echo cancellation module, and the echo cancellation module receives voice Information simultaneously eliminates echo, sends and eliminates the voice messaging after echo to adaptive-filtering module;
The adaptive-filtering module:Receive to send after the voice messaging of echo cancellation module, filtering process to voice and send mould Block.
CN201710673101.9A 2017-08-09 2017-08-09 Noise echo eliminating device based on video conference CN107249116A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710673101.9A CN107249116A (en) 2017-08-09 2017-08-09 Noise echo eliminating device based on video conference

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710673101.9A CN107249116A (en) 2017-08-09 2017-08-09 Noise echo eliminating device based on video conference

Publications (1)

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CN107249116A true CN107249116A (en) 2017-10-13

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CN104111814A (en) * 2013-04-16 2014-10-22 国际商业机器公司 Prevention Of Unintended Distribution Of Audio Information
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