An optimal smoothing factor for reducing musical residual noise in speech enhancement

[[abstract]]speech enhancement systems. This paper applies a perceptual-based speech enhancement algorithm that considers masking properties to enhance speech signals corrupted by colored noise. Moreover, an optimal smoothing factor which is adapted by the variation of signal to spectral deviation ratio (SSDR) in successive frames is used to reduce the effect of musical residual noise. Improved results are obtained by considering both intra-frame masking properties and inter-frame spectrum smoothing to enhance a speech signal corrupted by various types of colored noise