Patent ID: 8019075

Claim:
A system for controlling an echo canceller, comprising: a cross-correlator configured to produce a cross-correlation based output that facilitates controlling the echo canceller by cross-correlating two signals associated with the echo canceller; a discriminator configured to produce a discriminator output that discriminates between near-end signal and echo in a corrupted signal; an echo canceller controller configured to control the echo canceller according to the cross-correlation based output and the discriminator output; and a corrupted signal detector configured to facilitate detecting noise in the corrupted signal, wherein features of the corrupted signal detector are given by χ CSD ( k,t )={log| M ( k,t )| 2 −log N M ( k,t )} where N M (k,t) is a noise energy in frequency bin k and time-frame t of the corrupted signal, and M(k,t) is the kth bin of a frequency domain transform of the corrupted signal in time frame t.