Patent ID: 9002027
Filing Date: 2015-04-07
Classification: G10L,H04M

Abstract:
1. A space-time adaptive beamformer for reducing noise in a vehicle comprising: a plurality of microphones, at least one microphone of the plurality of microphones configured to communicate a microphone output; a first weighting network communicatively connected to the microphone output, the first weighting network configured for adjusting a plurality of signal characteristics of the microphone output; at least one delay network communicatively connected to the microphone output, the at least one delay network configured for delaying the microphone output to generate a time delay output; a second weighting network communicatively connected to the time delay output, the second weighting network configured for adjusting the signal characteristics of the time delay output of the at least one delay network; at least one sum adder communicatively connected to the first weighting network and the second weighting network, the at least one sum adder configured for adding a first weighted output of the first weighting network and a second weighted output of the second weighting network; and wherein an output of the at least one sum adder is combined with an artificial noise free reference signal to provide an error signal used to generate a low distortion noise reduced output.