15. A processor-based method for producing supplemental information for audio signature data, the method comprising: obtaining, by executing instructions with a processor, the audio signature data at an input from a data network, the audio signature data received from a device, the audio signature data including data relating to at least one of time or frequency components representing a first characteristic of media; obtaining, by executing instructions with the processor, semantic audio signature data at the input from the data network, the semantic audio signature data received from the device, the semantic audio signature data being a measure of at least one of a timber feature, a beat feature or a pitch feature relating to a second characteristic of the media; associating, by executing instructions with the processor, the semantic audio signature data to the audio signature data; and processing, by executing instructions with the processor, the associated semantic audio signature data and audio signature data to determine a change in the second characteristic relative to the first characteristic.
15. A processor-based method for producing supplemental information for audio signature data, the method comprising: obtaining, by executing instructions with a processor, the audio signature data at an input from a data network, the audio signature data received from a device, the audio signature data including data relating to at least one of time or frequency components representing a first characteristic of media; obtaining, by executing instructions with the processor, semantic audio signature data at the input from the data network, the semantic audio signature data received from the device, the semantic audio signature data being a measure of at least one of a timber feature, a beat feature or a pitch feature relating to a second characteristic of the media; associating, by executing instructions with the processor, the semantic audio signature data to the audio signature data; and processing, by executing instructions with the processor, the associated semantic audio signature data and audio signature data to determine a change in the second characteristic relative to the first characteristic. 16. The method of claim 15 , wherein the timber feature includes one of a mean of a spectral centroid, a variance of the spectral centroid, or a percentage of low/high energy frames.