Patent ID: 9596549
Date: 2017-03-14
CPC Classifications: G01S,G01V,G10K,H04M,H04R,H04S

Claim:
1. An audio system comprising: an ultrasound transmitter configured to transmit an ultrasound test signal; an ultrasound sensor array comprising a plurality of ultrasound sensor elements; an estimator configured to estimate a presence characteristic of a user in response to a comparison between a characteristic of the ultrasound test signal and a characteristic of ultrasound signals received from the ultrasound sensor array, the ultrasound signals being reflected signals of the ultrasound test signal; an audio band array comprising audio band elements; an audio array circuit configured to generate a directional response of the audio band array by applying weights to individual audio band signals of the audio band elements; and a weight circuit configured to determine the weights in response to the presence characteristic.