Coded domain audio analysis

An apparatus comprising:

• one or more processors;
• and
• at least one memory storing computer-executable instructions that, with the one or more processors, cause the apparatus to at least:
• access a first file and a second file, wherein the first file and the second file both include compressed audio content;
• collect compressed audio content samples from the compressed audio content of the first file and from the compressed audio content of the second file,
• convert the compressed audio content samples to energy values,
• determine energy characteristics from the energy values,
• match the energy characteristics to obtain a greatest content match with respect to a plurality of time delay instances, and
• select a delay value based on the greatest content match, the selected delay value corresponding to an offset between the first file and the second file.

A non-transitory computer-readable medium storing computer-executable instructions that, when executed, cause an apparatus to at least:

• access a first file and a second file, wherein the first file and the second file include compressed audio content;
• collect compressed audio content samples from the compressed audio content of the first file and from the compressed audio content of the second file;
• convert the compressed audio content samples to energy values;
• determine energy characteristics from the energy values for the first file and the second file;
• match the energy characteristics to obtain a greatest content match with respect to a plurality of delay instances;
• and
• select a delay value based on the greatest content match, the selected delay value corresponding to an offset between the first file and the second file.