1. A method to identify audio data comprising: ranking, with a computer programming processing module, a plurality of audio descriptors by calculating a Fisher's discriminant ratio for each audio descriptor; selecting a configurable number of highest-ranking audio descriptors based on the Fisher's discriminant ratio of each audio descriptor to obtain a selected featured set; and applying the selected feature set to audio data to determine a background environment of the audio data.
1. A method to identify audio data comprising: ranking, with a computer programming processing module, a plurality of audio descriptors by calculating a Fisher's discriminant ratio for each audio descriptor; selecting a configurable number of highest-ranking audio descriptors based on the Fisher's discriminant ratio of each audio descriptor to obtain a selected featured set; and applying the selected feature set to audio data to determine a background environment of the audio data. 5. The method of claim 1 , further comprising appending the selected feature set with zero-crossing rate features.