Research on Speech Enhancement of Improved Spectral Subtraction Algorithm
Hua Chen · Computer Technology and Development · 2014
For the speech signal,voice quality is greatly affected by the noise. Speech enhancement techniques must be used to suppress background noise,improving voice quality and voice clear degrees. The speech enhancement is to get the speech as original as possible from the speech signal with noise. The spectral subtraction speech enhancement is utilized broadly because it is simple and easy for the real-time processing. In this paper,the basic principle of algorithm of the spectral subtraction is presented. Aiming at reducing annoying musical noise in the standard spectral subtraction algorithm,the principle of two kinds of typical improved spectral subtraction is analyzed. Experimental results show that the proposed algorithm reduces the musical noise effectively and improves the speech quality.