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Audio signal mixing processing method and device

A technology of audio signal and processing method, which is applied in the field of communication, and can solve the problems of audio signal overlapping, reducing the user's sense of presence experience, and the user's inability to listen to the voice signal clearly, so as to achieve the effect of clear sound and improve the sense of presence experience

Inactive Publication Date: 2011-12-07
GLOBAL INNOVATION AGGREGATORS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the existing audio mixing processing scheme, for the receiving terminal, the received mixed audio signals often overlap in orientation, so that the user cannot clearly hear the voice signals from multiple venues in the same orientation, thereby reducing the user's on-site experience

Method used

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  • Audio signal mixing processing method and device

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0042] Embodiment 1 is the audio mixing process when there are sites with overlapping audio signals in the largest N-party sites participating in the audio mixing. The audio mixing process is as follows: Figure 5 As shown, the specific implementation includes the following operations:

[0043] S501. The MCU detects the audio signal orientation (hereinafter referred to as: orientation) of the largest N-party venue to be mixed;

[0044] Among them, since the monophonic conference site itself has no orientation, the orientation of the conference site is specified externally (specifically, it can be specified by the MCU, user specified, etc.), and for the dual-channel or multi-channel conference site, in addition to the externally specified In addition to the orientation, it can also be the actual orientation detected based on the data of the venue itself.

[0045] A preferred way is as follows:

[0046] Binaural and multi-channel venue orientation detection methods: Generally ...

Embodiment 2

[0081] Embodiment 2 is the audio mixing processing process when there is a conference site inconsistent with the orientation in the video picture among the largest N conference sites participating in the audio mixing. The audio mixing processing process is as follows: Image 6 As shown, the specific implementation method includes the following operations:

[0082] S601. The MCU detects whether the orientation of each venue in the largest N-party venue is consistent with its orientation in the video screen, if yes, execute S602, and if not, execute S603;

[0083] S602. The MCU performs mixing processing on the audio signals from the largest N-party venue. The specific implementation method of the mixing processing can be realized through the existing mixing method, and will not be described in detail here;

[0084] S603. The MCU adjusts the orientation of the conference site according to the detected position in the video screen of the conference site whose orientation is incon...

Embodiment 3

[0091] Embodiment 3 is the audio mixing process when the conference site at the receiving end specifies the orientation for the largest N-party conference site. The audio mixing process is as follows: Figure 7 As shown, the specific implementation method includes the following operations:

[0092] S701. The MCU receives the orientation designation information sent by the venue n. The orientation specification information is used to instruct the MCU to adjust the orientation of the venue a in the largest N-party venues. As an example and not a limitation, the orientation specification information can be sent by signaling ;

[0093] S702. The MCU adjusts the orientation of the venue a to the orientation specified in the above orientation specifying information. Wherein, the location designation information may also carry designated validation information, which is used to indicate that the location information is to be adjusted for site a only when the audio mixing is sent to ...

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Abstract

An embodiment of the present invention provides an audio mixing processing method for audio signals. The method includes: determining a terminal that needs to adjust a location of an audio signal, and adjusting location information about the audio signal for the terminal; and performing audio mixing processing for the audio signal whose location is adjusted and other signals to be audio mixed. An embodiment of the present invention further provides an audio mixing processing apparatus for audio signals. According to the technical solutions provided in the embodiments, the audio location information about terminals whose audio signal locations overlap are adjusted, so that the location of each sending terminal is separated from each other as far as possible, and the sound of each sending terminal is more clear, thereby improving the field experience and feeling of a user.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and device for audio signal mixing and processing. Background technique [0002] In the multimedia communication system, the multimedia server (take the MCU (Multipoint Control Unit, multipoint control unit) in the video conference as an example) performs audio mixing processing on the audio signals sent by the participants participating in the multimedia communication. The following takes video conferencing as an example to illustrate the process of N-party audio mixing processing. The process specifically includes: MCU decodes the voice code stream after receiving the voice code stream of each conference site to obtain the audio signal of each conference site, and calculates the The voice envelope after the decoding of the venue, by comparing the voice envelopes of each venue, the N-party venue with the largest voice envelope (hereinafter referred to as the largest N-...

Claims

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Application Information

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IPC IPC(8): G10L21/00H04S3/00
CPCH04S7/30H04M3/568H04S2400/11H04S7/00H04R3/00H04N7/15H04S2400/15H04M3/567
Inventor 梁丽燕
Owner GLOBAL INNOVATION AGGREGATORS LLC
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