基于TMS320VC5509的回声系统的设计  

Design about reecho system base on TMS320C5509

作　　者：麦凯[1] 苏成悦[1] 郑柱[1] 

机构地区：[1]广东工业大学物理与光电工程学院,广州510006

出　　处：《中国集成电路》2008年第4期91-94,共4页China lntegrated Circuit

摘　　要：本文介绍了用TMS320C5509的DSP一阶IIR全通滤波器实现的回声系统,该系统能够从麦克风或着从已经编辑好的波形文件输入到DSP中,再从DSP实现回声的语音输出。该系统使用的是AD73311L语音芯片,具有良好的输入输出特性,并且可以通过改变采样率来改变回声的特性。A reecho system which is implemented by a one-step IIR all-pass filter which is based upon TMS320C5509＇ s DSP has been introduced in this paper.The system could introduce sound which comes from microphone directly or the edited sound-wave file into DSP, then implement the reecho output from the DSP. The system make use of the sound chip AD73311L,has good input＆output characteristic,and could change the characteristic of reecho by change the sampling frequency

关 键 词：DSP IIR滤波器 回声系统 梳状滤波器 全通滤波器 

分 类 号：TN912[电子电信—通信与信息系统]