Patent ID: 8855341

Claim:
A method of audio signal processing, said method comprising: calculating a first cross-correlation between a left microphone signal and a reference microphone signal; calculating a second cross-correlation between a right microphone signal and the reference microphone signal; and based on information from the first and second calculated cross-correlations, determining a corresponding orientation of a head of a user, wherein the left microphone signal is based on a signal produced by a left microphone located at a left side of the head, the right microphone signal is based on a signal produced by a right microphone located at a right side of the head opposite to the left side, and the reference microphone signal is based on a signal produced by a reference microphone, and wherein said reference microphone is located such that (A) as the head rotates in a first direction, a left distance between the left microphone and the reference microphone decreases and a right distance between the right microphone and the reference microphone increases and (B) as the head rotates in a second direction opposite to the first direction, the left distance increases and the right distance decreases.