一种稳健的语音传输路径自适应建模系统及应用

针对语音信号的特点,提出一种稳健的语音传输路径自适应建模系统.它在引入宽带平稳训练信号克服非平稳输入自适应建模失配的基础上,用小延时预测滤波消除自适应建模的语音干扰,同时用补偿滤波来修正预测滤波导致的训练成分失真.计算机仿真表明,该建模系统在回声抵消、语音增强等领域均有很好的应用前景.

A Robust Speech Transfer Path Modeling Technique and Its Applications

According to the features of speech signals, the paper proposes a robust speech transfer path modeling system. After adding a low-level broadband random training signal to eliminate the modeling mismatch, it removes the speech signals in the system output by using an adaptive prediction filter, and it also modifies the distortion of the training signals due to the APF by using a compensation filter. The computer simulations confirm that the novel modeling system can be widely applied to echo cancellation systems and speech enhancement systems.