Reduction of Background Noise from affected Speech using a Spectral Subtraction Algorithm based on Masking Properties of the Human Ear
Radu Mihail Udrea, Silviu Ciochină, Dragoş Nicolae Vizireanu · TELSIKS 2005 - 2005 uth International Conference on Telecommunication in ModernSatellite, Cable and Broadcasting Services · 2006
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.