A NOVEL MULTI-BAND SPECTRAL SUBTRACTION METHOD BASED ON PHASE MODIFICATION AND MAGNITUDE COMPENSATION

The spectral subtraction method is historically one of the first algorithms proposed for noise reduction. However, most im-plementations and variations of the basic technique cannot suppress musical noise effectively, and keep residual noise and speech distortion under a low level simultaneously. In this paper, we analyze two foundational shortcomings of spectral-subtraction-like methods, and proposed a novel multi-band spectral subtraction based on phase modification and magni-tude compensation. The new method outperforms the stan-dard multi-band spectral subtraction method resulting in su-perior speech quality and greatly reduced musical noise. Index Terms — Multi-band spectral subtraction, phase modification, magnitude compensation, musical noise 1