自适应回声消除器设计

基金项目:

陕西省科技统筹创新工程计划资助项目（2015KTCQ03-10）

详细信息

Design of self-adaptive echo canceller

College of Communication and Information Engineering, Xi''an University of Science and Technology, Xi''an 710054, China

摘要: 针对救援通信系统语音通话过程中回声干扰问题，基于采用归一化最小均方误差算法的自适应滤波器和语音检测模块，设计了一种自适应回声消除器，介绍了该自适应回声消除器的工作原理和设计方案。测试结果表明，该自适应回声消除器收敛速度快，可在1 s内收敛到-30 dB以下，基本消除音频信号回声。
- 救援通信 /
- 语音通信 /
- 回声消除 /
- 自适应滤波器 /
- 归一化最小均方误差算法
Abstract: In view of problem of echo interference in voice communication of rescue communication system, a self-adaptive echo canceller was designed based on self-adaptive filter using normalized least mean square and voice detection module. Working principle and design scheme of the self-adaptive echo canceller were introduced. The test results show that the self-adaptive echo canceller has rapid convergence speed, which can converge to below -30 dB within 1 s, and basically eliminate audio signal echo.
- rescue communication /
- voice communication /
- echo cancellation /
- self-adaptive filter /
- normalized least mean square

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