Patent ID: 8548804
Filing Date: 2013-10-01
Classification: G10L

Abstract:
1. A method of determining a sample error coefficient between a first signal and a similar second signal comprising the steps of: receiving the second signal via a communications channel, the second signal being a transmitted version of the first signal; dividing the first signal into a first plurality of segments; dividing the second signal into a second plurality of segments; determining a first periodicity measure of one of the first plurality of segments and a second periodicity measure of one of the second plurality of segments; determining that the first periodicity measure and the second periodicity measure exhibit similarity which exceeds a similarity threshold; determining a third periodicity measure of another of the first plurality of segments and a fourth periodicity measure of one of the second plurality of segments; determining that the third periodicity measure and the fourth periodicity measure exhibit similarity which exceeds the similarity threshold; generating a first ratio in dependence upon said first periodicity measure and said second periodicity measure and a second ratio in dependence upon said third periodicity measure and said fourth periodicity measure; determining a first segment sample rate error coefficient based on the first ratio; determining a second segment sample rate error coefficient based on the second ratio; and determining a sampling rate error coefficient based on both the first and second segment sample rate error coefficients.