Patent ID: 8311590

Claim:
An electronic device, comprising: a housing; a microphone configured to receive a first audio signal, the microphone provided on a front face of the housing; a transceiver circuit configured to communicate the first audio signal to a remote device and to receive a second audio signal from the remote device; a loudspeaker configured to provide an audible signal based on the second audio signal, the loudspeaker provided on a rear face of the housing; a sense element configured to sense the audible signal provided by the loudspeaker and provide a sensed signal, wherein the sense element is positioned at a distance from the loudspeaker different than a distance between the microphone and the loudspeaker; and a processing circuit configured to process at least one of the first audio signal and the second audio signal based on the sensed signal, wherein processing at least one of the first audio signal and the second audio signal includes (i) using an echo cancellation process on the sensed signal, and (ii) delaying the sensed signal by a predetermined amount, the predetermined amount is based at least in part on an acoustical characteristic of an acoustic path between the loudspeaker and the sense element and at least in part on an acoustical characteristic of an acoustic path between the loudspeaker and the microphone.