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Multi-band Bark scale spectral over-subtraction for colored noise reduction

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3 Author(s)
Udrea, R.M. ; Telecommun. Dept., Bucharest Politechnica Univ., Romania ; Ciochina, S. ; Vizireanu, D.N.

We propose an improved spectral subtraction method for reducing acoustic noise added to speech in colored noise environments like helicopter cockpit or car engine. This implementation uses over-subtraction method for spectral subtraction. The noise signal does not affect the speech signal uniformly over the whole spectrum. A nonlinear multi-band Bark scale frequency spacing approach was proposed to reduce colored noise. Simulations showed a better quality in terms of Itakura Saito distance and perceptual evaluation of quality for the enhanced speech.

Published in:

Signals, Circuits and Systems, 2005. ISSCS 2005. International Symposium on  (Volume:1 )

Date of Conference:

14-15 July 2005

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