公开(公告)号：US20080140396A1

公开(公告)日：2008-06-12

申请号：US11928251

申请日：2007-10-30

申请人： Dominik Grosse-Schulte ,  Mohamed Krini ,  Gerhard Uwe Schmidt

发明人： Dominik Grosse-Schulte ,  Mohamed Krini ,  Gerhard Uwe Schmidt

IPC分类号： G10L21/02

CPC分类号： G10L15/20 ,  G10L21/0208 ,  G10L21/0264

摘要： A signal processing system enhances a speech input signal. A signal reconstruction circuit receives the speech input signal and extracts a spectral envelope. The signal reconstruction circuit generates an excitation signal based on the input signal, and generates a reconstructed speech signal based on the extracted spectral envelope and an excitation signal. A combining circuit combines the noise reduced signal and the reconstructed speech signal. Signal reconstruction and signal combinations may be based on a signal-to-noise ratio of the speech signal or another input.

摘要翻译： 信号处理系统增强语音输入信号。 信号重构电路接收语音输入信号并提取频谱包络。 信号重建电路基于输入信号产生激励信号，并且基于所提取的频谱包络和激励信号产生重构的语音信号。 组合电路组合了降噪信号和重构语音信号。 信号重建和信号组合可以基于语音信号或另一输入的信噪比。