Patent ID: 7613310

Claim:
A method for reducing noise associated with an audio signal received through a microphone sensor array of a game controller during game play, comprising: detecting a target signal component and a noise signal component from at least two microphones integrated with the game controller; enhancing the target signal component of the audio signal by executing a beam-forming operation performed through a first filter; blocking the target signal component by executing a reverse beam-forming operation through a second filter; aligning an output of the second filter through an adaptive filter; combining an output of the first filter and an output of the adaptive filter so that noise signal component is reduced without distorting the target signal; monitoring an acoustic set-up associated with the audio signal as a background process using the beam-forming operation of the first filter and the reverse beam-forming operation of the second filter to track the target signal component; and periodically setting a calibration of both a value of the first filter and a value of the second filter based upon the monitored acoustic set-up, the calibration of the values of the first filter and the second filter implements blind source separation that uses second order statistics to separate the target signal component from the noise signal component based on a frequency basis, to actively steer the first filter and the second filter toward the target signal component during game play, wherein the calibration remains fixed between the periodic setting; wherein the target signal component is able to freely move around in 3-dimensional space with six degrees of freedom relative to the microphone array of the game controller.