Patent ID: 9706088
Date: 2017-07-11
CPC Classifications: G03B,H04N,H04R

Claim:
1. A method for generating an output audio signal in an audio capture system having multiple microphones including at least a first microphone and a second microphone, the first microphone including a drainage enhancement feature structured to drain liquid more quickly than the second microphone lacking the drainage enhancement feature, the method comprising: receiving a first audio signal from the first microphone representing ambient audio captured by the first microphone during a time interval; receiving a second audio signal from the second microphone representing ambient audio captured by the second microphone during the time interval; determining, by a processor, a correlation metric between the first audio signal and the second audio signal representing a similarity between the first audio signal and the second audio signal; responsive to the correlation metric exceeding a predefined threshold, outputting the first audio signal for the time interval; responsive to the correlation metric not exceeding the predefined threshold, determining a first noise metric for the first audio signal and a second noise metric for the second audio signal; responsive to a sum of the first noise metric and a bias value being less than the second noise metric, outputting the first audio signal for the time interval; and responsive to the sum of the first noise metric and the bias value being greater than the second noise metric, outputting the second audio signal for the time interval.