Patent ID: 9711162
Date: 2017-07-18
CPC Classifications: G10L,H03G

Claim:
1. A method automatically performed by a system for environmental noise compensation of a first speech captured by a first audio capture device in a speech audio signal outside of an audio environment, the method comprising: estimating a fast audio energy level and a slow audio energy level from an environment audio signal captured by a second audio capture device in the audio environment, wherein: the fast audio energy level corresponds to a second speech captured in the audio environment, and the slow audio energy level corresponds to an ambient noise captured in the audio environment; applying a gain to the speech audio signal to generate an environment compensated speech audio signal; determining either a presence or an absence of an audio event by comparing the fast audio energy level with the slow audio energy level against a predetermined energy threshold; updating the gain based on the estimated slow audio energy level during the absence of the audio event; and freezing the gain at a current level during the presence of the audio event.