CN109922420A - One kind realizing stereosonic method based on sound channel copy - Google Patents
One kind realizing stereosonic method based on sound channel copy Download PDFInfo
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- CN109922420A CN109922420A CN201910275122.4A CN201910275122A CN109922420A CN 109922420 A CN109922420 A CN 109922420A CN 201910275122 A CN201910275122 A CN 201910275122A CN 109922420 A CN109922420 A CN 109922420A
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Abstract
The invention discloses one kind to realize stereosonic method based on sound channel copy, comprising: inquires and judges studio with the presence or absence of multiple microphones；When only one microphone of studio, the mono data of recording is set L channel or right channel by recorded broadcast host；The data of this sound channel are based on sound channel copy and copy as another sound channel, are merged into pseudostereo.It inquires and judges that studio with the presence or absence of multiple microphones, specifically includes: it is whether normal based on left and right acoustic channels sound is manually listened to respectively, and whether need to open the function that sound channel copies based on result control recorded broadcast host.The shortcomings that this patent is stereo using the realization of sound channel duplication technology, overcomes the prior art, improves user experience, has good effect.
Description
Technical Field
The invention belongs to the field of computers, and relates to a method for realizing stereo based on sound channel copy.
Background
The user watches the multimedia resources on the education website to learn knowledge, and the making process of the multimedia resources is probably as follows:
teacher lecture- > video capture- > recorded broadcast host- > educational administration check- > post production- > cloud video transcoding- > CDN delivery- > website online- > user watching.
The teacher needs to use a microphone as a sound collector for teaching, collected signals and video signals collected by a camera are combined and packaged and then transmitted to the recording and broadcasting host, the recording and broadcasting host encodes the audio and video signals into an MP4 file which can be watched at a PC (personal computer) end, and then the MP4 file is transmitted to a user for watching after a series of processing. Then at the actual recording site, due to equipment cost, some special condition restrictions or sudden special situations, not all the time two microphones are provided for the teacher to use, sometimes only one. Then the experience is not good if it is a mono recording process and presented to the user for viewing.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a method for realizing stereo based on channel copy.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a method for implementing stereo based on channel copying, comprising:
inquiring and judging whether a plurality of microphones exist in a recording site;
when only one microphone is arranged on the recording site, the recording and broadcasting host sets the recorded single-track data as a left track or a right track;
the data of this channel is copied to another channel based on the channel copy, and combined into pseudo-stereo.
Preferably, the method further comprises the following steps: and outputting an MP4 file or performing RTMP streaming to the CDN network for live broadcasting.
Preferably, the analog signal input by the microphone is converted into mono data with a sampling rate of PCM16 Bit44100Hz by analog-to-digital conversion, and each sample is copied into a sample of another channel by channel copying, and the format is changed into stereo data with a sampling rate of 2channel PCM16 Bit44100 Hz.
Preferably, a corresponding UI operation interface is set in the recording and playing host, and the channel copy operation of the data of the single channel is realized based on the UI operation interface.
This patent adopts the track copy technology to realize stereo, has overcome prior art's shortcoming, has improved user experience, has fine effect.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The present invention will be described in detail below with reference to the accompanying drawings so that the above advantages of the present invention will be more apparent. Wherein,
fig. 1 is a flow chart illustrating a method for implementing stereo based on channel copying according to the present invention.
Detailed Description
The following detailed description of the embodiments of the present invention will be provided with reference to the drawings and examples, so that how to apply the technical means to solve the technical problems and achieve the technical effects can be fully understood and implemented. It should be noted that, as long as there is no conflict, the embodiments and the features of the embodiments of the present invention may be combined with each other, and the technical solutions formed are within the scope of the present invention.
Additionally, the steps illustrated in the flow charts of the figures may be performed in a computer system such as a set of computer-executable instructions and, although a logical order is illustrated in the flow charts, in some cases, the steps illustrated or described may be performed in an order different than here.
As shown in fig. 1, a method for implementing stereo based on channel copying, includes:
inquiring and judging whether a plurality of microphones exist in a recording site;
when only one microphone is arranged on the recording site, the recording and broadcasting host sets the recorded single-track data as a left track or a right track;
the data of this channel is copied to another channel based on the channel copy, and combined into pseudo-stereo.
Preferably, the method further comprises the following steps: and outputting an MP4 file or performing RTMP streaming to the CDN network for live broadcasting.
Preferably, the analog signal input by the microphone is converted into mono data with a sampling rate of PCM16 Bit44100Hz by analog-to-digital conversion, and each sample is copied into a sample of another channel by channel copying, and the format is changed into stereo data with a sampling rate of 2channel PCM16 Bit44100 Hz.
Preferably, a corresponding UI operation interface is set in the recording and playing host, and the channel copy operation of the data of the single channel is realized based on the UI operation interface.
In the embodiment, the judgment of the plurality of microphones is performed by a manual judgment method at present, and a software algorithm is not used for automatically detecting a plurality of microphones. The reason is that: even if the software determines several microphones, if there are cases where the microphones are muted, the result is a situation where it is clear that both microphones are present but sound monophonic. Therefore, at present, it is necessary to actively listen to whether the sound of the left and right channels is normal by human, and then to control whether the recording and broadcasting host needs to open the function of copying the channels.
This patent adopts the track copy technology to realize stereo, has overcome prior art's shortcoming, has improved user experience, has fine effect.
In one embodiment, when only one microphone is in the recording site, the recording and broadcasting host sets the recorded single-channel data as a left channel or a right channel, copies the data of the channel into another channel, combines the channel into pseudo stereo, and outputs an MP4 file or performs an RTMP stream push to a CDN network for live broadcasting
Assuming that a microphone analog signal is converted into single-channel data with a sampling rate of PCM16 Bit44100Hz through analog-to-digital conversion by a circuit, each sampling point is copied into a sampling point of another channel, and the format of the single-channel data is changed into stereo data with a sampling rate of 2channel PCM16 Bit44100 Hz.
It should be noted that for simplicity of description, the above method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present application is not limited by the order of acts described, as some steps may occur in other orders or concurrently depending on the application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required in this application.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects.
Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A method for implementing stereo based on channel copying, comprising:
inquiring and judging whether a plurality of microphones exist in a recording site;
when only one microphone is arranged on the recording site, the recording and broadcasting host sets the recorded single-track data as a left track or a right track;
the data of this channel is copied to another channel based on the channel copy, and combined into pseudo-stereo.
2. The method for implementing stereo based on channel copying according to claim 1, further comprising: and outputting an MP4 file or performing RTMP streaming to the CDN network for live broadcasting.
3. Method for stereo sound realization based on channel copying according to claim 1 or 2, characterized in that the analog signal from the microphone input is analog-to-digital converted by the circuit into mono data at the PCM16 Bit44100Hz sampling rate, each sample is copied by channel copying into samples of another channel formatted into stereo data at the 2channel PCM16 Bit44100Hz sampling rate.
4. The method for realizing stereophonic sound based on channel copying as claimed in claim 1 or 2, wherein a corresponding UI operation interface is provided at the recording and broadcasting host, and channel copying operation of data of a single channel is realized based on the UI operation interface.
5. The method for implementing stereo based on channel copy as claimed in claim 1, wherein querying and determining whether there are multiple microphones in a recording scene specifically comprises:
and controlling whether the recording and broadcasting host needs to open the sound track copy function based on the result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910275122.4A CN109922420A (en) | 2019-04-08 | 2019-04-08 | One kind realizing stereosonic method based on sound channel copy |
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| CN201910275122.4A CN109922420A (en) | 2019-04-08 | 2019-04-08 | One kind realizing stereosonic method based on sound channel copy |
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Citations (6)
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| CN1329810A (en) * | 1998-10-13 | 2002-01-02 | Srs实验室公司 | Apparatus and method for synthesizing pseudo-stereophonic outputs from monophonic input |
| CN1717125A (en) * | 2004-06-29 | 2006-01-04 | 索尼株式会社 | Pseudo-stereo signal making apparatus |
| CN104301856A (en) * | 2008-05-13 | 2015-01-21 | 斯托明瑞士有限责任公司 | An apparatus and method for stereophonizing a mono signal |
| CN104581512A (en) * | 2014-11-21 | 2015-04-29 | 广东欧珀移动通信有限公司 | Stereo recording method and device |
| US9843883B1 (en) * | 2017-05-12 | 2017-12-12 | QoSound, Inc. | Source independent sound field rotation for virtual and augmented reality applications |
| CN208258049U (en) * | 2018-05-21 | 2018-12-18 | 中科汇金数字科技(北京)有限公司 | Generate the audio process equipment of binaural audio signal |
-
2019
- 2019-04-08 CN CN201910275122.4A patent/CN109922420A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1329810A (en) * | 1998-10-13 | 2002-01-02 | Srs实验室公司 | Apparatus and method for synthesizing pseudo-stereophonic outputs from monophonic input |
| CN1717125A (en) * | 2004-06-29 | 2006-01-04 | 索尼株式会社 | Pseudo-stereo signal making apparatus |
| CN104301856A (en) * | 2008-05-13 | 2015-01-21 | 斯托明瑞士有限责任公司 | An apparatus and method for stereophonizing a mono signal |
| CN104581512A (en) * | 2014-11-21 | 2015-04-29 | 广东欧珀移动通信有限公司 | Stereo recording method and device |
| US9843883B1 (en) * | 2017-05-12 | 2017-12-12 | QoSound, Inc. | Source independent sound field rotation for virtual and augmented reality applications |
| CN208258049U (en) * | 2018-05-21 | 2018-12-18 | 中科汇金数字科技(北京)有限公司 | Generate the audio process equipment of binaural audio signal |
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Application publication date: 20190621 |
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