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A new Noise Subtraction Factor (NSF) is proposed in this paper for Multi-Band Spectral Subtraction (MBSS) method. The proposed NSF is a non-linear function of the band Signal-to-Noise Ratio (SNR) for each pre-defined octave band. This NSF adjusts each acoustic band to compensate human auditory perception. Simulation results based on NOIZEUS database demonstrate that the proposed NSF for the MBSS method...