一种基于DSP的音频采集与回放系统

摘要

介绍一种基于DSP的音频信号处理系统.该系统采用TI公司的低功耗数字信号处理器TMS320VC5509A作为主处理器,采用能与之无缝连接的TLV320AIC23作为音频CODEC芯片.在此基础上完成系统硬件平台的搭建和软件设计,可以作为对音频信号处理的通用平台.本文详细介绍DSP与CODEC芯片的接口设计方法,提出一种利用DMA中断的方式进行数据传送的方法,大大提高了处理速度.%An audio signal processing system based on DSP is introduced. The system adopts TI' s low power consumption DSP TMS320VC5509A as the main processor, and TLV320A1C23 as the audio codec chip. Therefore, the system's hardware platform and software design are completed based on them, which can be used as a universal platform for other audio signal processing. The paper expounds in detail the method of interface that connects codec chip with DSP. At last, it provides an example of data transmission based on DMA interruption, which upgrades procession speed largely.