Wavelet-based wireless voice noise reduction device and method

The invention relates to the technical field of wireless voice communication, and discloses a wavelet-based wireless voice noise reduction device and method, being characterized in that by adopting wavelet transformation, the close relation between wavelet transformation and a Lipschitz index describing signal singularity is established according to the zooming characteristic of wavelet transformation for determining the position of a mutation point, so that the position of the singularity point of the signal is determined through wavelet transformation; wavelet denoising improved by a threshold function is adopted; and a method of improving the threshold function is adopted. According to the wavelet-based wireless voice noise reduction device and method, the wireless voice noise reducer experiment system based on wavelet transformation is achieved, and the denoising effect of the wireless voice noise reducer experiment system is superior to that of a hard threshold function and a softthreshold function. Acco