Patent ID: 7706821
Filing Date: 2010-04-27
Classification: H04M,H04R

Abstract:
1. A system for improving the signal-to-noise ratio of a communication device, the system comprising: a first microphone operable to collect a composite signal including a voice signal component and/or a background noise signal component; a second microphone operable to collect a primarily background noise signal; and a noise reduction processing component operable to: wherein the first microphone is positioned in proximity to the user's mouth and located in a remote component that is physically separate from the communication device; wherein the remote component is contained within a separate housing from a housing containing the communications device; wherein the remote component communicates with the communication device using at least one physical wired transmission link, wireless transmission link or optical transmission link; wherein the noise reduction processing component further comprises: wherein the noise reduction processing component further comprises a discrete time processing for slowing and controllable delaying the progresses or propagation of the signal from the first microphone and reducing background noise by subtracting the signal from the second microphone from the from the background noise component of the composite signal from the first microphone via digital signal processing.