基于DSP双路音频信号实时处理系统设计  

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

作　　者：袁茹轩[1] 尉乐[1] 何天璐[1] 高中山[1] 

机构地区：[1]西安电子科技大学本科生创新实践基地,陕西西安710126

出　　处：《电子科技》2011年第7期24-26,共3页Electronic Science and Technology

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。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.

关 键 词：DSP DMA TLV320AIC23B 实时采集处理 缓冲更新 

分 类 号：TN911.72[电子电信—通信与信息系统]