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A nonlinear spectrum processing technique for speech enhancement

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3 Author(s)
Eger, T. ; Analytic Sciences Corporation, McLean, Virginia ; Su, J. ; Varner, L.

This paper discusses a nonlinear spectrum processing approach to speech enhancement. The technique incorporates a "soft" nonlinearity which suppresses low-level noise components while passing higher-level speech components. Although the algorithm is an extension of the spectral subtraction concept, the soft nonlinearity provides less distortion of low-amplitude speech components and less sensitivity to the subtraction level than previously reported techniques. In addition to noticeable improvement in perceptual quality, the algorithm offers a substantial increase in SNR.

Published in:

Acoustics, Speech, and Signal Processing, IEEE International Conference on ICASSP '84.  (Volume:9 )

Date of Conference:

Mar 1984