用L9320实现ADPCM语音编解码

Realization of ADPCM Codec with L9320

L9320是LANWAVE公司推出的一款自适应音频脉冲编码 (ADPCM)编解码器。该器件除具有正常的ADPCM编码解码模式外 ,还有PCM编解码模式、电源测试模式以及编解码器测试模式。文中主要对L9320编解码器的工作原理和使用方法进行了分析。

L9320is one ADPCMcodec chip of LANWAVE Inc.Besides having the ADPCMcodec mode,it has also the PCMcodec mode,battery test and CCITTtest modes.The function principle of L9320along with its applications in portable speech system are presented in this paper.