Patent ID: 8462193
Filing Date: 2013-06-11
Classification: G10L,H04M,H04R

Abstract:
1. A method of processing a local audio signal in a conferencing system, comprising: assigning a reinforced local audio signal as a first reference; assigning a remote audio signal as a second reference; receiving a first frame of the local audio signal; transmitting the first frame of the local audio signal to a remote conferencing system; reinforcing the first frame of the local audio and propagating the reinforced first local audio frame to a loud speaker system; at an echo canceller, receiving the first reference and a second frame of the local audio signal, the second frame of the local audio signal containing acoustical feedback; removing substantially all of the acoustical feedback from the second frame; and as a result of determining that only the first reference is active, not suppressing the second frame of the local audio signal.