Patent ID: 7043428
Filing Date: 2006-05-09
Classification: G10L

Abstract:
1. A method of converging an ITU Recommendation G.729 Annex B compliant voice activity detection (VAD) device, comprising: determining a noise identification threshold value; determining a voice identification threshold value; comparing a number of energy measures of a signal to a minimum threshold value, said noise identification threshold value, and said voice identification threshold value; determining a first set of running average background noise characteristics in accordance with Recommendation G.729B; determining a second set of running average background noise characteristics; counting the number of consecutive times G.729 B update conditions are not met and assigning the count to a first counter variable; substituting said second set of running average background noise characteristics for said first set when a specific event occurs; and counting the number of consecutive times said G.729 B VAD detects voice frames and assigning the count to a second counter variable, wherein said specific event occurs when a predetermined value of said second counter variable is reached.