Patent ID: 7684571

Claim:
A method of generating an audio signal, the method comprising: receiving a plurality of input audio signals from a plurality of microphones forming a microphone array, the plurality of input audio signals being representative of a set of sound sources within an auditory field of view of the microphone array at a given instant in time; receiving a motion input signal from a motion sensor, the motion input signal being representative of the motion of the microphone array; and manipulating the received plurality of input audio signals in response to the received motion input signal to generate an audio output signal that is representative of a set of sound sources within the auditory field of view of a virtual microphone, the apparent motion of the virtual microphone being independent of the motion of the microphone arrays, wherein manipulating further comprises, generating an orientation signal that represents the orientation of the plurality of microphones and a trajectory signal that represents the trajectory of the plurality of microphones from the motion input signal, generating a difference signal representing a difference between the orientation signal and the trajectory signal, damping the difference signal, adding the damped difference signal to the trajectory signal, and providing a damped orientation signal representing an apparent orientation of the virtual microphone.