Patent ID: 6925176

Claim:
An echo cancellation system ( 11 ), comprising: a microphone ( 18 ), responsive to a resulting echo signal ( 22 ) from a loudspeaker ( 16 ) that provides an acoustic output in response to a speech signal ( 20 ), for providing an echo signal which is a component of a microphone signal ( 28 ); and a control block means ( 40 ), responsive to the speech signal ( 20 ), to an echo reduced microphone signal ( 34 ) and to a further echo reduced microphone signal ( 52 ), for providing a first control signal ( 46 ) to an echo canceller ( 10 ), a second control signal ( 54 ) to a residual echo suppressor ( 14 ) and a third control signal ( 48 ) to a residual echo filter ( 42 ); wherein said control signals are provided for optimizing cancellation of the echo signal.