Multi-microphone robust noise suppression

A method for performing noise reduction in an audio signal, the method comprising:

• executing a stored frequency analysis module by a processor to generate sub-band signals in a frequency domain from time domain acoustic signals;
• executing a noise cancellation module by a processor to cancel at least a portion of the sub-band signals;
• executing a modifier module by a processor to suppress a noise component and an echo component in the noise canceled portion of the sub-band signals on a per sub-band basis;
• and
• executing a reconstructor module by a processor to reconstruct a modified time domain signal from the components suppressed sub-band signals provided by the modifier module.

A non-transitory computer readable storage medium having embodied thereon a program, the program being executable by a processor to perform a method for reducing noise in an audio signal, the method comprising:

• executing a stored frequency analysis module by a processor to generate a plurality of sub-band signals in a frequency domain from time domain acoustic signals;
• executing a noise cancellation module by a processor to cancel noise in one or more of the plurality of sub-band signals;
• executing a modifier module by a processor to suppress a noise component and an echo component in the one or more noise canceled sub-band signals on a per sub-band basis;
• and
• executing a reconstructor module by a processor to reconstruct a modified time domain signal from the components suppressed sub-band signals provided by the modifier module.