基于DSP的数字音频解码系统的优化设计

Optimization Design of Digital Audio Decoding System Based on DSP

为克服目前音频专用芯片的体积大、支持音频格式受限等不足,以TI公司的54X定点DSP为核心,以较常见的MP3音频数据为例,优化设计了音频解码系统的硬件平台,实现了从计算机下载和存储MP3音频数据文件,并经DSP解码后通过立体声编译码器播放等功能。实验证明,该系统可利用其良好的软件升级性能高质量地完成对多种格式的音频信号的解码和播放。

In order to overcome of the the disadvantages of audio chips,such as over-sized,limited supporting audio formats,this paper optimizes the hardware platform of audio decoding system,using 54X fixed-point DSP of TI company as the core,with MP3 audio data as a common the system.It has reached the functions of downloading and storing MP3 data files playing them through DSP decoding system.Experiments show that the system can be upgraded audio decoding performance of high quality to complete a variety of formats using this good software.