Patent ID: 7613532
Filing Date: 2009-11-03
Classification: G06F

Abstract:
1. A method for improving the signal to noise ratio for an audio input signal relative to the noise characteristics of an operating computing device recording the audio input signal, comprising: receiving by the computing device the audio input signal; recording a first sound signal based on the audio input signal with at least one audio input recording device located outside a substantially enclosed housing of the computing device; recording a second sound signal based on the audio input signal with at least one audio input recording device located inside the substantially enclosed housing of the computing device; loading a noise profile stored in the computing device, the noise profile indicative of noise characteristics of the computing device as established at the time of manufacturer of the computing device; generating an estimated noise signal from the noise profile and the second sound signal; and processing the estimated noise signal and the first sound signal to remove the estimated noise signal thereby generating a third sound signal, wherein the signal to noise ratio associated with the third sound signal is higher than the signal to noise ratio of the computing device associated with the first sound signal.