Foundations of Spectral-gain Formulae for Speech Noise Reduction
نویسنده
چکیده
Over the past years, methods of short-time spectral modification have proven especially effective at reducing noise for the enhancement of speech. Key to these methods are noisereduction gain formulae, a class of frequency-domain data windows, that are applied to successive blocks of the shorttime Fourier transform of the noisy speech. This paper provides a unified treatment of several noise-reduction gain formulae from the context of statistical estimation theory, and in doing so attempts to illuminate relationships shared by the most common gain functions found in the literature.
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