Patent ID: 9560446
Date: 2017-01-31
CPC Classifications: H04R

Claim:
1. A method comprising: receiving, at a microphone of a plurality of microphones, a sound that originates from a source; generating, by the microphone of the plurality of microphones, a signal corresponding to the sound; determining an initial location estimate of the source based at least in part on: (i) a known location of the microphone, and (ii) when the signal corresponding to the sound is generated by the microphone; identifying a first group of microphones and a second group of microphones from among the plurality of microphones based at least in part on the initial location estimate; selecting the first group of microphones using a clustering function, the clustering function employing a first time differential between when a first signal corresponding to the sound is generated by a first microphone and a second time differential between when a second signal corresponding to the sound is generated by a second microphone, the first microphone and the second microphone belonging to the first group of microphones; and determining a probable location of the source of the sound based at least in part on (i) a geometric model of a first known location of the first microphone and a second known location of the second microphone, and (ii) when the first signal corresponding to the sound is generated by the first microphone and the second signal corresponding to the sound is generated by the second microphone.