Werner, speech enhancement
2016-08-23
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Wiener speech denoising, curriculum design. Presents an improved speech enhancement algorithm, this algorithm based on prior SNR estimation based on Wiener filtering method. First through calculation silent paragraph of statistics average get initial noise power spectrum; second, calculation voice paragraph between with noise voice power spectrum, and smooth processing initial noise power spectrum and with noise voice power spectrum, update has noise power spectrum; last, consider has a frequency points Department noise sharp increases of situation, through calculation with noise voice power spectrum and noise power spectrum of ratio, since adapted to adjustment noise power spectrum. This algorithm with other speech enhancement algorithm based on short-time spectral estimation were compared to experimental, experimental results show that this algorithm can effectively reduce residual noise and voice distortion, increase speech intelligibility.
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