摘要
对回声消除技术原理进行了阐述,介绍自适应回声消除器基本结构,并分析了speex中的频域回声消除算法MDF,针对MDF算法提出了一种使估计回声和录音输入之间进行的同步方法;最后,以Speex开源项目为基础进行了测试。结果表明,该方法比现有的双段讲话检测(DTD)算法效果更好,实现也更为简单。
The echo cancelation theory and bosical structure of adaptive echo cancelation are introduced, and the multi - delay block frequency domain algorithm of speex is analysed. Then a way of synchronization between the referenced echo and the record input signal is proposed. The computer tests based on the speex open source project show that it performs better than current double - talk detection and is simple to implement.
出处
《现代电子技术》
2009年第7期157-159,共3页
Modern Electronics Technique
基金
沈阳市科技项目应用基础研究计划"无线网络视频监控系统关键问题研究及应用"(1081236-1-00)
