-c5400dsp of assembly language and c language voice mode compression and decompression procedures for synchronous serial interface, and the sampling rate of 8k / s.

• 详细说明： 该代码采用c5400dsp的汇编语言和c语言实现语音adpcm压缩与解压的程序，接口为同步串口，抽样速率为8k/s。