对语音信号利用a律算法进行压缩和解压，整个工程文件都在压缩包中-The use of a law on the voice signal compression and decompression algorithm, the entire project documents are in the compressed package

基于5509的语音信号编解码（ G711 Alaw编解码程序）-PCM to A law

用A律压缩算法对语音信号进行压缩，C5502芯片，DSP信号处理- Using A law compression algorithm for speech signal compression, C5502 chip, DSP signal processing