Patent ID: 7720235
Filing Date: 2010-05-18
Classification: G10L,G11B,H04H

Abstract:
1. A signal processing method comprising: transforming a plurality of separate and distinct audio signals into a plurality of time-frequency distributions wherein each of the separate and distinct audio signals is comprised of data from a data set comprising audio data from a different source of stored data; dividing at least one time-frequency distribution into a plurality of smaller regions and selecting at least one of the smaller regions for comparison with smaller regions of a plurality of time-frequency distributions corresponding to another one of the data sets for the plurality of audio signals; calculating similarity values for the selected smaller region based upon the comparisons with smaller regions of the plurality of time-frequency distributions corresponding to the another one of the data sets; and determining whether similarities between the distribution containing the selected smaller region and the another separate distribution exist, wherein the smaller regions are comprised of data from a plurality of separate frequency bands taken from different temporal portions of the data; and further wherein the calculation of similarity values is based on comparisons that are made when only time difference is changed in a single frequency band.