Design of self-adaptive echo canceller
-
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。
-
关键词:
- 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.
点击查看大图
计量
- 文章访问数: 64
- HTML全文浏览量: 11
- PDF下载量: 8
- 被引次数: 0