ACOUSTIC ECHO CANCELLATION DEVICES EMBEDDED

Brand	Owner	Address	Description
SONA	BIAMP SYSTEMS CORPORATION	9300 SW Gemini Drive Beaverton OR 97008	Acoustic echo cancellation devices embedded in conferencing equipment, videoconferencing and teleconferencing processors;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

A method of improving convergence of an echo canceller in a full duplex speakerphone, wherein the echo canceller includes LEC (Line Echo Canceller) and AEC (Acoustic Echo Canceller) portions, comprising the steps of capturing coefficients during operation, storing the coefficients, and utilizing the stored coefficients as default values during start-up of a subsequent call. According to the method of the present invention, the amount of echo cancellation necessary to provoke a save of the coefficients decreases with time when it is not achieved by the system despite the presence of a reference signal (i.e. speakerphone signal).