Patent ID: 7561700

Claim:
A system for sensing and compensating for at least one error signal, the system comprising: an acoustic pick-up device having a first microphone disposed at a first distance from a desired acoustic source, and a second microphone disposed at a second distance from the desired acoustic source, each of the first microphone and the second microphone receiving acoustic signals generated from the desired acoustic source, and in response, transducing the acoustic signals into audio signals; a position estimation circuit coupled to receive the audio signals from the first microphone and the second microphone, and adapted to produce an error signal from the audio signals associated with the first and second microphones, the error signal representing an estimate of the acoustic pick-up device having angular and/or distance mispositioning relative to the desired acoustic source that results in the acoustic signals received by the acoustic pick-up device failing to achieve proper and/or adequate noise cancellation and resulting in the acoustic signals being degraded, the position estimation circuit including a first circuit providing first and second time averages of corresponding magnitudes for the audio signals received from the first microphone and the second microphone, respectively, the error signal being produced from the first and second time averages; and a controller configured to use the error signal to select a directional response corresponding to at least one of the first and second microphones in order to compensate for the acoustic pick-up device being mispositioned by providing the audio signals from at least one of the first microphone and the second microphone to the output.