Patent ID: 8891711
Filing Date: 2014-11-18
Classification: H03H

Abstract:
1. One or more non-transitory computer-readable storage media comprising computer-executable instructions that responsive to execution by one or more processors cause operations to be performed comprising: applying a high pass filter to a first signal to obtain a first plurality of estimated noise levels for the first signal, wherein each estimated noise level of the first plurality of estimated noise levels corresponds to a respective time of the first signal; applying a first low pass filter to the plurality of estimated noise levels to obtain a first signal noise level; applying the high pass filter to a second signal to obtain a second plurality of estimated noise levels for the second signal, wherein each estimated noise level of the second plurality of estimated noise levels corresponds to a respective time of the second signal; applying the first low pass filter to the second plurality of estimated noise levels to obtain a second signal noise level; determining a first cutoff frequency based at least in part on the first signal noise level and a second cutoff frequency based at least in part on the second signal noise level; applying a second low pass filter to the first signal based at least in part on the first cutoff frequency to obtain a first filtered signal; and applying a third low pass filter to the second signal based at least in part on the second cutoff frequency to obtain a second filtered signal.