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Reduction of background noise from affected speech using a spectral subtraction algorithm based on masking properties of the human ear

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3 Author(s)
R. M. Udrea ; Fac. of Electron., Telecommun. & Inf. Technol., Politechnica Univ., Bucharest, Romania ; S. Ciochina ; D. N. Vizireanu

In this paper we propose an improved method for reducing background noise added to speech in noisy environments like helicopter cockpit or car engine. This implementation uses over-subtraction method for spectral subtraction. Masking properties of the human ear are exploited to reduce the residual noise after spectral subtraction. A psychoacoustically motivated weighting filter was included to mask the residual musical noise. Simulations showed a better quality with no distortion for the enhanced speech and the musical noise was effectively masked.

Published in:

TELSIKS 2005 - 2005 uth International Conference on Telecommunication in ModernSatellite, Cable and Broadcasting Services  (Volume:1 )

Date of Conference:

28-30 Sept. 2005