Patent ID: 8515093
Filing Date: 2013-08-20
Classification: H04R

Abstract:
1. A method comprising: determining, in a computing device in a first predefined frequency band within a first predefined time period, a first energy difference between two signals, wherein each of the two signals is received from a circuit in a plurality of circuits and is a filtered version of a source signal received by the circuit; determining, in the computing device in a second predefined frequency band within a second predefined time period, a second energy difference between the two signals; determining parameter modification information for the plurality of circuits based on the first and second energy differences, wherein the parameter modification information includes a corner frequency value of a high pass filter in the plurality of circuits; providing parameter modification information to the plurality of circuits; establishing an energy difference profile based at least on the first and second energy differences and the first and second frequency bands; determining a threshold frequency for which an energy difference is substantially the same for frequencies above the threshold frequency and substantially different for frequencies below the threshold frequency; setting a corner frequency value based on the threshold frequency; and providing the corner frequency value to an input circuit as the corner frequency of the high pass filter.