Embedded sound mixing method and device, embedded equipment and storage medium

Abstract

The invention discloses an embedded sound mixing method which is used for solving the problem that an existing sound mixing algorithm is not suitable for an embedded system. The method provided by theinvention comprises the following steps: acquiring first digital audio data and second digital audio data to be subjected to audio mixing; if both the first digital audio data and the second digitalaudio data are positive, performing additive operation on the first digital audio data and the second digital audio data to obtain third audio data, and then subtracting the anti-overflow data from the third audio data to obtain audio data after audio mixing; if both the first digital audio data and the second digital audio data are negative, performing additive operation on the first digital audio data and the second digital audio data to obtain fourth audio data, and adding anti-overflow data to the fourth audio data to obtain audio data after audio mixing; and if the first digital audio data and the second digital audio data are not both positive and negative, performing additive operation on the first digital audio data and the second digital audio data to obtain fifth audio data as audio data after audio mixing. The invention further provides an embedded sound mixing device, embedded equipment and a storage medium.

Description

technical field [0001] The invention relates to the technical field of embedded equipment, in particular to an embedded audio mixing method, device, embedded equipment and storage medium. Background technique [0002] Computer systems often need to perform sound mixing calculations when processing multiple channels of digital audio data. For example, in a voice conferencing system, when the audio collected by user A and user B through their respective microphones needs to be transmitted to user C at the same time, it is necessary to mix the audio data of user A and user B. [0003] When dealing with audio mixing in the prior art, in order to reduce the problems of popping sound and low volume that may occur during audio mixing, a normalized audio mixing algorithm is generally used. This algorithm dynamically adjusts the attenuation factor according to the energy of the audio, which can achieve better mixing effect. [0004] However, the normalized mixing algorithm requires...

AI Technical Summary

Problems solved by technology

[0006] Embodiments of the present invention provide an embedded audio mixing method, device, embedded device, and storage medium to solve the problem that the existing audio mixing algorithm is not suitable for embedded systems

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