MULTI-MICROPHONE NEURAL NETWORK FOR SOUND RECOGNITION
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United States of America Patent
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Nov 7, 2017
Grant Date -
Nov 9, 2017
app pub date -
Jan 5, 2016
filing date -
Jan 5, 2016
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Abstract
A neural network is provided for recognition and enhancement of multi-channel sound signals received by multiple microphones, which need not be aligned in a linear array in a given environment. Directions and distances of sound sources may also be detected by the neural network without the need for a beamformer connected to the microphones. The neural network may be trained by knowledge gained from free-field array impulse responses obtained in an anechoic chamber, array impulse responses that model simulated environments of different reverberation times, and array impulse responses obtained in actual environments.
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