A Perceptual Approach for Noise Reduction using Nonlinear Spectral Subtraction
Radu Mihail Udrea, Dragoş Nicolae Vizireanu, Ionuţ Pirnog · 2007
We propose an improved spectral subtraction method for reducing acoustic noise added to speech in noisy environments like helicopter cockpit or car engine. This implementation uses over-subtraction method for spectral subtraction. Residual noise can be masked by exploiting the masking properties of the human auditory system. A psychoacoustically motivated weighting filter was included to eliminate residual musical noise. Simulations showed a better quality with no distortion for the enhanced speech and the musical noise was effectively masked.