Patent ID: 8447044

Claim:
A noise suppression system comprising: a sampling circuit adapted to sample an audio input signal at a predetermined sampling rate; a low-pass filter coupled with the sampling circuit and configured to pass low-frequency components of the sampled audio input signal; a plurality of delay circuits configured to sequentially delay the low-frequency components of the sampled audio input signal to provide sequentially delayed signals; an adaptive processor configured to process the sequentially delayed signals and update a plurality of linear predictive coefficient (LPC) values on a sample-by-sample basis, based on an error signal, where the error signal is based on a difference between an output of the low-pass filter and an output of the adaptive processor; and a decision logic device coupled with the adaptive processor and configured to inhibit an update of the LPC values applied to a portion of the sampled audio input signal based on a determination that a wind buffet is not present in the portion of the sampled audio input signal; a high-pass filter coupled with the sampling circuit and configured to pass high-frequency components of the sampled audio input signal; and an adder configured to sum the error signal and an output of the high-pass filter to generate an output signal.