根据TMS320C55XX系列的DSP在语音信号数字处理方面的强大能力，本文介绍一种采用这种 DSP与高性能立体声音频解码芯片TLV320 AIC23相结合的MP3解码器系统的设计。实验证明该系统可以顺利实现MP3数据流的上传与下载，高质量完成 MP3的解码与播放 。-According to TMS320C55XX series of DSP in the digital voice signal processing capabilities, this paper introduces a DSP with the use of such high-performance stereo audio decoder chip TLV320 AIC23 combining MP3 decoder system design. Experiments show that the system can successfully upload MP3 data streams and downloads, high quality MP3 decoder and playback.