METHOD AND SYSTEM FOR SPEECH ENHANCEMENT IN A ROOM
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United States of America Patent
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Issued Date -
Nov 7, 2013
app pub date -
Dec 20, 2010
filing date -
Dec 20, 2010
priority date (Note) -
Abandoned
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Abstract
A system for speech enhancement in a room, having: a microphone arrangement with at least two spaced apart microphones for capturing audio signals from a speaker's voice, an acoustic beamforming unit for processing the captured audio signals in a manner so as to impart one of a plurality of different directional patterns to the microphone arrangement; a feedback cancellation unit for applying a feedback cancellation algorithm to the processed audio signals and for providing a feedback status signal indicating how close an acoustic feedback loop of the system is to feedback; an amplifier for amplifying the processed audio signals; a loudspeaker arrangement to be located in the room for generating sound according to the amplified audio signals; and a control for selecting the directional pattern imparted to the microphone arrangement as a function of the feedback status signal.
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