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针对以MCU为控制器使用多片TI公司专用音频DSP－TMS57070构建的一个实时声效处理系统，深入研究DSP音频系统的原理及关键设计。它包括音频信号的定时、多处理器间的协同工作、信息交互方式等问题。文中就代表性回声生成系统，讨论算法在该系统上的实现方案并分析对DSP——TMS57070资源的合理利用。
For the real-time sound processing system built by MCU for multi-chip TI DSP-TMS57070, the principle and key design of DSP audio system are deeply researched. It includes the timing of audio signals, multi-processor collaboration, information exchange and other issues. The paper builds the system of representative echo, discusses the implementation of the algorithm on the system and analyzes the reasonable utilization of DSP - TMS57070 resources.