Acoustic signature matching of audio content

Abstract

Various embodiments relating to identifying an acoustic signature of an audio content item are provided. In one embodiment, an audio subsample of a test audio content item may be compared with corresponding audio subsamples of each of a plurality of catalog audio content items. If the audio subsample of the test audio content item matches the corresponding audio samples of two or more catalog audio content items, those catalog audio content items may be selected as candidate audio content items. A complete audio sample of the test audio content item may be compared to corresponding complete audio samples of each of the candidate audio content items. One of the candidate audio content items may be selected as a matching audio content item.

1 . A method of identifying an acoustic signature of a test audio content item, the method comprising:
 comparing an audio subsample of the test audio content item with corresponding audio subsamples of each of a plurality of catalog audio content items;   if the audio subsample of the test audio content item matches the corresponding audio subsamples of two or more catalog audio content items, selecting those catalog audio content items as candidate audio content items;   comparing a complete audio sample of the test audio content item to corresponding complete audio samples of each of the candidate audio content items; and   selecting one of the candidate audio content items as a matching audio content item.   
     
     
         2 . The method of  claim 1 , wherein, if the complete audio sample of the test audio content item matches the corresponding complete audio sample of only one of the candidate audio content items, then that candidate audio content item is selected as the matching audio content item. 
     
     
         3 . The method of  claim 1 , wherein, if the complete audio sample of the test audio content item matches corresponding complete audio samples of two or more candidate audio content items, then one of the two or more candidate audio content items is selected as the matching audio content item based on secondary matching criteria. 
     
     
         4 . The method of  claim 3 , wherein the secondary matching criteria includes metadata. 
     
     
         5 . The method of  claim 1 , further comprising:
 if the audio subsample of the test audio content item matches the corresponding audio subsample of only one catalog audio content item, selecting that catalog audio content item as the matching audio content item.   
     
     
         6 . The method of  claim 1 , further comprising:
 if the complete audio sample of the test audio content item does not match corresponding audio samples of any of the candidate audio content items, reporting that the test audio content item does not match any of the catalog audio content items.   
     
     
         7 . The method of  claim 6 , further comprising:
 converting the test audio content item to a catalog audio content item.   
     
     
         8 . The method of  claim 1 , wherein the audio subsample of the test audio content item and the corresponding audio subsamples of the catalog audio content items have a same duration and a same temporal position. 
     
     
         9 . The method of  claim 1 , wherein the complete audio sample is an entire audio duration of the test audio content item. 
     
     
         10 . A method of identifying an acoustic signature of a test audio content item, the method comprising:
 comparing an audio subsample of the test audio content item with corresponding audio subsamples of each of a plurality of catalog audio content items;   if the audio subsample of the test audio content item matches the corresponding audio subsample of only one catalog audio content item, selecting that catalog audio content item as a matching audio content item;   if the audio subsample of the test audio content item matches the corresponding audio samples of two or more catalog audio content items, selecting those catalog audio content items as candidate audio content items;   comparing a complete audio sample of the test audio content item to corresponding complete audio samples of each of the candidate audio content items; and   if the complete audio sample of the test audio content item matches the second corresponding complete audio sample of only one candidate audio content item, selecting that candidate audio content item as the matching audio content item.   
     
     
         11 . The method of  claim 10 , further comprising:
 if the complete audio sample of the test audio content item matches corresponding complete audio samples of two or more candidate audio content items, selecting one of the two or more candidate audio content items as the matching audio content item based on secondary matching criteria.   
     
     
         12 . The method of  claim 11 , wherein the secondary matching criteria includes metadata. 
     
     
         13 . The method of  claim 10 , further comprising:
 if the audio subsample of the test audio content item does not match corresponding audio sub samples of any of the catalog audio content items, reporting that the test audio content item does not match any of the catalog audio content items and   converting the test audio content item to a catalog content item.   
     
     
         14 . The method of  claim 10 , further comprising:
 if the complete audio sample of the test audio content item does not match corresponding complete audio samples of any of the candidate audio content items, reporting that the test audio content item does not match any of the catalog audio content items; and   converting the test audio content item to a catalog content item.   
     
     
         15 . The method of  claim 10 , wherein the audio subsample of the test audio content item and the corresponding audio subsamples of the catalog audio content items have a same duration and a same temporal position. 
     
     
         16 . The method of  claim 10 , wherein the complete audio sample is an entire audio duration of the test audio content item. 
     
     
         17 . A method of identifying an acoustic signature of a test audio content item, the method comprising:
 receiving a hash file of the test audio content item;   if the hash file identifies a catalog audio content item of a plurality of catalog audio content items, selecting that catalog audio content item as a matching audio content item;   if the hash file does not identify a catalog audio content item, comparing an audio subsample of the test audio content item with corresponding audio subsamples of each of the plurality of catalog audio content items;   if the audio subsample of the test audio content item matches the corresponding audio subsample of only one catalog audio content item, selecting that catalog audio content item as a matching audio content item;   if the audio subsample of the test audio content item matches the corresponding audio samples of two or more catalog audio content items, selecting those catalog audio content items as candidate audio content items;   comparing a complete audio sample of the test audio content item to corresponding complete audio samples of each of the candidate audio content items; and   if the complete audio sample of the test audio content item matches the second corresponding complete audio sample of only one candidate audio content item, selecting that candidate audio content item as the matching audio content item.   
     
     
         18 . The method of  claim 17 , further comprising:
 if the complete audio sample of the test audio content item matches corresponding complete audio samples of two or more candidate audio content items, selecting one of the two or more candidate audio content items that has metadata that most closely matches corresponding metadata of the test audio content item as the matching audio content item.   
     
     
         19 . The method of  claim 17 , wherein the audio subsample of the test audio content item and the corresponding audio subsamples of the catalog audio content items have a same duration and a same temporal position. 
     
     
         20 . The method of  claim 17 , wherein the complete audio sample is an entire audio duration of the test audio content item.