METHODS AND APPARATUS FOR SELECTIVE MICROPHONE SIGNAL COMBINING

摘要

Methods and apparatus for frequency selective signal mixing for speech enhancement. In one embodiment frequency-based channel selection is performed for signal magnitude, signal energy, and noise estimate using speaker activity detection information, signal-to- noise ratio, ami/or signal level, Freqneney-based channel selection is performed for a dynamic spectral floor to adjust the noise estimate using speaker dominance information. Noise reduction is performed on the signal for the selected channel.