SYSTEM FOR COLLECTING AND PROCESSING AUDIO SIGNALS
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United States of America Patent
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Issued Date -
Dec 13, 2018
app pub date -
Feb 27, 2018
filing date -
Feb 27, 2018
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Abstract
A sound collecting system is provided with a microphone array having a plurality of microphones, a first echo canceller that receives a sound signal from the microphone and removes at least some of an acoustic echo component from the sound signal, a beam forming unit that that forms directivity by processing the partially echo removed sound signal collected from the microphone array, and a second echo canceller disposed after on the back of the beam forming unit that operates to remove the residual acoustic echo in the sound signal.
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