Patent ID: 7120579

Claim:
A method of boosting an input signal to overcome a noise, comprising: (a) estimating the noise, thereby providing an estimated noise; (b) bandpassing the input signal in a plurality of pass bands to obtain a corresponding plurality of signal subbands; (c) bandpassing the estimated noise in said plurality of pass bands to obtain a corresponding plurality of noise subbands; and (d) for each said signal subband: (i) obtaining a power measure of said each signal subband, (ii) comparing said power measure of said each signal subband, to said power measure of at least one other signal subband, and (iii) whenever said power measure of said at least one other signal subband exceeds said power measure of said each signal subband by a signal masking threshold, nulling said each signal subband, otherwise, adjusting said each signal subband so that said each signal subband masks a corresponding said noise subband.