基于DSP的语音降噪系统设计  

Design of speech noise reduction system based on DSP

作　　者：王龙[1] 官洪运[1] 刘捷[1] 

机构地区：[1]东华大学信息与科学技术学院,上海201620

出　　处：《微型机与应用》2010年第22期86-88,共3页Microcomputer & Its Applications

摘　　要：针对语音通信中不可避免要受到各种噪声的影响,致使通信质量下降的问题,采用DSPTMS320C5509和语音采集芯片TLV320AIC23搭建了语音降噪系统,实现了基于谱相减技术的实时系统来消除环境噪声。通过DSP开发板对信号进行采集与降噪实验,结果表明该系统具有较好的降噪效果,能有效地提高系统的信噪比。Voice is inevitable to be affected by all kinds of noise in voice communication,impacting communica tion quality.In this paper,DSP TMS320C5509 and CODEC TLV320AIC23 are used to build noise cancellation system,and realized the real time system based on spectral subtraction to eliminate noise.It uses DSP development board to do the experiment on signal acquisition and noise cancellation,this experiment shows that the system has good noise reduction effect,can effectively improve the SNR of the system.

关 键 词：谱相减 降噪 TMS320VC5509 

分 类 号：TN850.5[电子电信—信息与通信工程]