Perceptual wavelet adaptive denoising of speech

  title={Perceptual wavelet adaptive denoising of speech},
  author={Qiang Fu and Eric A. Wan},
This paper introduces a novel speech enhancement system based on a wavelet denoising framework. In this system, the noisy speech is first preprocessed using a generalized spectral subtraction method to initially lower the noise level with negligible speech distortion. A perceptual wavelet transform is then used to decompose the resulting speech signal into critical bands. Threshold estimation is implemented that is both time and frequency dependent, providing robustness to non-stationary and… CONTINUE READING
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