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Noise reduction techniques that are relying on spectral weighting rules often generate annoying musical noise artifacts in the processed signal. In this paper, we present a postfilter (PF) for the spectral weighting gains that is capable of reducing musical noise in a simple but efficient way. It includes a robust detector for speech pauses and low SNR conditions and adaptively smoothes the weighting...
This paper presents a modified Kalman filter operating in the frequency domain for single channel speech enhancement. The proposed scheme uses a two step approach. In the first step, information from previous, enhanced speech DFT coefficients is exploited to perform an estimation of the current speech coefficients. Investigations show that the highest prediction gain is achieved by modeling the temporal...
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