›› 2011, Vol. 24 ›› Issue (7): 24-.

• 论文 • 上一篇    下一篇

基于DSP双路音频信号实时处理系统设计

袁茹轩,尉乐,何天璐,高中山   

  1. (西安电子科技大学 本科生创新实践基地,陕西 西安 710126)
  • 出版日期:2011-07-15 发布日期:2011-08-16
  • 作者简介:袁茹轩(1990—),男,本科。研究方向:DSP嵌入式开发,高频电路绘制。

Design of the Double-channel Audio Signal Real-time Acquisition and Processing System Based on DSP

 YUAN Ru-Xuan, WEI Le, HE Tian-Lu, GAO Zhong-Shan   

  1. (Undergraduate Innovation Practice Base,Xidian University,Xi'an 710071,China)
  • Online:2011-07-15 Published:2011-08-16

摘要:

采用TMS320C5509A作为核心处理器,给出了一种利用DMA结合多通道缓冲串口McBSP组成的语音信号采集系统的实现方法。合理分配了数据缓冲空间,可靠稳定地实现数据的实时更新,完成双路立体声信号的实时采集、处理和发送。阐述了AIC芯片与DSP连接的配置和数据接口的设计方法,给出CODEC 与DSP之间数据传输的程序示例。试验证明,该系统能够高精度、高稳定地完成音频信号的采集处理和发送任务,适用于个人便携式音频通信设备的驱动开发。

关键词: DSP, DMA, TLV320AIC23B, 实时采集处理, 缓冲更新

Abstract:

This design scheme adopts TMS320C5509A as the core processor,giving a realization method for composing the speech signal acquisition system with DMA and McBSP,distributing data buffers reasonably and realizing real-time data updated reliably and steadily.Then the paper expounds in detail the design method of configuration and data interface which connects AIC23B with DSP.Finally,the paper provides a C language program example which introduces data transmission between them.Experimental results of data acquisition show that the system can achieve real-time data processing with high precision and reliability.The system can be used for driver development of personal portable audio communications equipment.

Key words: DSP;DMA;TLV320AIC23B;real-time acquisition and processing;buffer update

中图分类号: 

  • TN911.72