Studies on a speech signal testing method based on adaptive filtering feedback technology
Changzhi Wu, Min-Tai Guo, Shibo Xiong, Qiang Li · 2002
According to the transmission mechanism of alternating speech signals, this paper puts forward a new detection method of speech signals in the real working state which is suitable for a strong-coupled acoustic wave. On the basis of the interference principle, the collected coupled acoustic signal is processed by adaptive filtering feedback technology to detect and separate the necessary speech signal. As an example, a detection test is performed to men's and women's speech signals which exist in an intensely coupled acoustic background in the real working state. From the comparison of the result to another result tested in an anechoic chamber, we know that this method can greatly cancel the interferences of the background acoustic wave to the tested speech signals. Thus a new experimental way which is to get speech data in an intensely coupled sound wave is realized.