Methods for encoding multi-channel audio signals, encoding machines and equipment, and computer-readable storage media

Abstract

The invention proposes a method for encoding multi-channel audio signals, an encoding machine and apparatus, and a computer-readable storage medium. The method for encoding multi-channel audio signals includes the following steps: obtaining the first audio frame to be encoded, where the first audio frame includes at least five channel signals; The sum of the correlation values ​​of all channel pairs in the target channel pair group is obtained, where the target channel pair group includes at least one channel pair, a channel pair includes two of at least five channel signals, a channel pair has one correlation value, and the correlation value indicates the correlation between two channel signals in a channel pair; When the sum of the correlation values ​​exceeds a predetermined threshold, perform energy balancing on at least two of the five channel signals to obtain at least two balanced channel signals; and encode at least two balanced channel signals to obtain the encoded bit stream. According to the invention, the encoding efficiency of the audio frame can be improved.