An Improved Method for Speech Enhancement Based on Human Auditory Masking Properties

This paper suggests an improved speech enhancement method based on human auditory masking properties. In this method, an improved noise estimation algorithm is used, then, the estimated results can be used to compute the masking threshold of the speech, after that, the coefficients of time and frequency are adjusted according to perception. The results show that the improved method leads to better signal to noise ratio, significant reduction of background noise, and unnatural structure of the residual noise.