低码率场景下基于AVS3的多声道音频编码研究

In response to the requirements for multi-channel audio encoding at low bit rates and real-time processing, this paper develops a multi-channel encoding algorithm tailored for low bit rate environments. This algorithm integrates Maximum Coherence Rotation (MCR) into the pre-processing stage of multi-channel encoding and decoding, devises various encoding modes based on the similarity among input channels, and implements an adaptive threshold updating mechanism informed by channel history. Subjective and objective testing indicates that our algorithm not only improves audio quality in low bit rate situations but also enhances the encoder\'s overall efficiency.