CN104883531A - Implementation method for echo cancellation for video call - Google Patents
Implementation method for echo cancellation for video call Download PDFInfo
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- CN104883531A CN104883531A CN201510246658.5A CN201510246658A CN104883531A CN 104883531 A CN104883531 A CN 104883531A CN 201510246658 A CN201510246658 A CN 201510246658A CN 104883531 A CN104883531 A CN 104883531A
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Abstract
The invention discloses an implementation method for echo cancellation for video call. In a call initiator recording stage, a user A and a user B log in communication software for video call; a server judges whether the user A is recording video or not, searches faces in the current video images, judges whether the faces are found or not, checks mouth shape change of the faces in the video images, judges whether the user is speaking or not, judges whether the user A is recording or not, turns on/off a recording function according to needs, and informs the user B of the recording state of the user A. In a receiver broadcasting stage, the user B receives the recording state information of the user A sent by the server, judges whether the user A is recording or not. The server judges whether the user B is broadcasting or not and turns on/off the record broadcasting function. According to the invention, whether the user is speaking or not is judged through detecting mouth shape change of the faces in the video images and recording at a local terminal and broadcasting at a remote terminal are controlled correspondingly. Echo cancellation is realized and audio quality is improved.
Description
Technical field:
The invention belongs to video communication field, the implementation method of particularly echo cancellation in a kind of video calling.
Background technology:
Along with the development of mechanics of communication, video calling is more and more general.In video calling, after namely a side speaks, by the audio amplifier playback of the other side, then collected by the Mic of the other side again and return to oneself, will inevitably echo be produced like this.If do not processed echo, will affect speech quality and Consumer's Experience, more serious also can form concussion, and generation is uttered long and high-pitched sounds, and has a strong impact on speech quality.
The information being disclosed in this background technology part is only intended to increase the understanding to general background of the present invention, and should not be regarded as admitting or imply in any form that this information structure has been prior art that persons skilled in the art are known.
Summary of the invention:
The object of the present invention is to provide the implementation method of echo cancellation in a kind of video calling, thus overcome above-mentioned defect of the prior art.
For achieving the above object, the invention provides
An implementation method for echo cancellation in video calling, the steps include:
A. initiator's recording:
(a1) user first, user second login bitcom carries out video calling;
(a2) server judges that whether user's first is just in recorded video; Go to step a3; No, go to step a13;
(a3) current video picture is obtained;
(a4) in current video picture, face is found;
(a5) judge whether to find face; Go to step a6; No, go to step a10;
(a6) shape of the mouth as one speaks change of face in video pictures is checked;
(a7) judge whether in speech; Go to step a8; No, go to step a10;
(a8) judge whether user's first records; Go to step a12; No, go to step a9;
(a9) sound-recording function is opened; Go to step a12;
(a10) judge whether user's first records; Go to step a11; No, go to step a12;
(a11) sound-recording function is closed;
(a12) recording state of user's second active user first is notified;
(a13) terminate;
B. recipient plays:
(b1) user's second receives the recording state notice of user's first that server is sent;
(b2) as user's first is recorded, b3 is gone to step; As user's first is not recorded, go to step b5;
(b3) server judges that whether user's second is just at playback; Go to step b7; No, go to step b4;
(b4) open recording playing function, go to step b7;
(b5) judge that whether user's second is just at playback; Go to step b6; No, go to step b7;
(b6) playback function is stopped;
(b7) terminate.
Compared with prior art, the present invention has following beneficial effect:
In the process of video calling, by detecting the shape of the mouth as one speaks change of face in video pictures, judge whether user is speaking, the corresponding control recording of local terminal and the broadcasting of far-end, realize echo cancellation, improve audio quality.
Accompanying drawing illustrates:
Fig. 1 is the recording schematic flow sheet of the implementation method of echo cancellation in a kind of video calling of the present invention;
Fig. 2 is the broadcast schematic flow sheet of the implementation method of echo cancellation in a kind of video calling of the present invention.
Embodiment:
Below the specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention not by the restriction of embodiment.
Clearly represent unless otherwise other, otherwise in whole specification and claims, term " comprise " or its conversion as " comprising " or " including " etc. by be understood to include the element of stating or part, and do not get rid of other element or other part.
As shown in Figure 1-2, the implementation method of echo cancellation in a kind of video calling, the steps include:
A. initiator's recording:
(a1) user first, user second login bitcom carries out video calling;
(a2) server judges that whether user's first is just in recorded video; Go to step a3; No, go to step a13;
(a3) current video picture is obtained;
(a4) in current video picture, face is found;
(a5) judge whether to find face; Go to step a6; No, go to step a10;
(a6) shape of the mouth as one speaks change of face in video pictures is checked;
(a7) judge whether in speech; Go to step a8; No, go to step a10;
(a8) judge whether user's first records; Go to step a12; No, go to step a9;
(a9) sound-recording function is opened; Go to step a12;
(a10) judge whether user's first records; Go to step a11; No, go to step a12;
(a11) sound-recording function is closed;
(a12) recording state of user's second active user first is notified;
(a13) terminate;
B. recipient plays:
(b1) user's second receives the recording state notice of user's first that server is sent;
(b2) as user's first is recorded, b3 is gone to step; As user's first is not recorded, go to step b5;
(b3) server judges that whether user's second is just at playback; Go to step b7; No, go to step b4;
(b4) open recording playing function, go to step b7;
(b5) judge that whether user's second is just at playback; Go to step b6; No, go to step b7;
(b6) playback function is stopped;
(b7) terminate.
The aforementioned description to concrete exemplary of the present invention is to illustrate and the object of illustration.These descriptions not want the present invention to be defined as disclosed precise forms, and obviously, according to above-mentioned instruction, can much change and change.The object selected exemplary embodiment and describe is to explain certain principles of the present invention and practical application thereof, thus those skilled in the art can be realized and utilize various different exemplary of the present invention and various different selection and change.Scope of the present invention is intended to limited by claims and equivalents thereof.
Claims (1)
1. an implementation method for echo cancellation in video calling, the steps include:
A. initiator's recording:
(a1) user first, user second login bitcom carries out video calling;
(a2) server judges that whether user's first is just in recorded video; Go to step a3; No, go to step a13;
(a3) current video picture is obtained;
(a4) in current video picture, face is found;
(a5) judge whether to find face; Go to step a6; No, go to step a10;
(a6) shape of the mouth as one speaks change of face in video pictures is checked;
(a7) judge whether in speech; Go to step a8; No, go to step a10;
(a8) judge whether user's first records; Go to step a12; No, go to step a9;
(a9) sound-recording function is opened; Go to step a12;
(a10) judge whether user's first records; Go to step a11; No, go to step a12;
(a11) sound-recording function is closed;
(a12) recording state of user's second active user first is notified;
(a13) terminate;
B. recipient plays:
(b1) user's second receives the recording state notice of user's first that server is sent;
(b2) as user's first is recorded, b3 is gone to step; As user's first is not recorded, go to step b5;
(b3) server judges that whether user's second is just at playback; Go to step b7; No, go to step b4;
(b4) open recording playing function, go to step b7;
(b5) judge that whether user's second is just at playback; Go to step b6; No, go to step b7;
(b6) playback function is stopped;
(b7) terminate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510246658.5A CN104883531A (en) | 2015-05-14 | 2015-05-14 | Implementation method for echo cancellation for video call |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510246658.5A CN104883531A (en) | 2015-05-14 | 2015-05-14 | Implementation method for echo cancellation for video call |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104883531A true CN104883531A (en) | 2015-09-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510246658.5A Pending CN104883531A (en) | 2015-05-14 | 2015-05-14 | Implementation method for echo cancellation for video call |
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Citations (7)
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|---|---|---|---|---|
| EP2472359A2 (en) * | 2010-12-29 | 2012-07-04 | Liang, Hsu | Operation control device |
| CN102572147A (en) * | 2011-12-27 | 2012-07-11 | 福建星网视易信息系统有限公司 | Echo eliminating method and echo eliminating equipment |
| CN102682273A (en) * | 2011-03-18 | 2012-09-19 | 夏普株式会社 | Device and method for detecting lip movement |
| CN103152500A (en) * | 2013-02-21 | 2013-06-12 | 中国对外翻译出版有限公司 | Method for eliminating echo from multi-party call |
| CN103312913A (en) * | 2013-07-03 | 2013-09-18 | 苏州科达科技股份有限公司 | System and method of echo cancellation |
| CN103595951A (en) * | 2012-08-16 | 2014-02-19 | 中兴通讯股份有限公司 | Audio frequency input state processing method, sending end equipment and receiving end equipment |
| CN104092957A (en) * | 2014-07-16 | 2014-10-08 | 浙江航天长峰科技发展有限公司 | Method for generating screen video integrating image with voice |
-
2015
- 2015-05-14 CN CN201510246658.5A patent/CN104883531A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2472359A2 (en) * | 2010-12-29 | 2012-07-04 | Liang, Hsu | Operation control device |
| CN102682273A (en) * | 2011-03-18 | 2012-09-19 | 夏普株式会社 | Device and method for detecting lip movement |
| CN102572147A (en) * | 2011-12-27 | 2012-07-11 | 福建星网视易信息系统有限公司 | Echo eliminating method and echo eliminating equipment |
| CN103595951A (en) * | 2012-08-16 | 2014-02-19 | 中兴通讯股份有限公司 | Audio frequency input state processing method, sending end equipment and receiving end equipment |
| CN103152500A (en) * | 2013-02-21 | 2013-06-12 | 中国对外翻译出版有限公司 | Method for eliminating echo from multi-party call |
| CN103312913A (en) * | 2013-07-03 | 2013-09-18 | 苏州科达科技股份有限公司 | System and method of echo cancellation |
| CN104092957A (en) * | 2014-07-16 | 2014-10-08 | 浙江航天长峰科技发展有限公司 | Method for generating screen video integrating image with voice |
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Application publication date: 20150902 |
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