Patent ID: 9258661
Filing Date: 2016-02-09
CPC Classification: G10L,H04R

Claim Text:
1. A method comprising: receiving, at a processor, a first data frame from a first microphone; receiving, at the processor, a second data frame from a second microphone; determining whether the first data frame and the second data frame are single source data frames; determining whether the first data frame and the second data frame are noise data frames in response to a determination that the first data frame and the second data frame are single source data frames; calculating a power ratio of the first microphone and the second microphone based on the first data frame and the second data frame in response to determining that the first data frame and the second data frame are noise data frames; and determining a gain calibration value based on a comparison of first power ratios calculated by the processor during a first time period and second power ratios calculated by the processor during a second time period, wherein the first time period is longer than the second time period.