System and method for speaker identification in audio data

A method for identifying audio data, comprising:

• receiving, at a feature extraction module, an unknown input audio data stream from a source to be identified and dividing the unknown input audio data stream into a plurality of segments of unknown input audio data;
• and
• receiving, at a similarity module, the plurality of segments of the unknown input audio data and receiving, at the similarity module, a known audio data stream from a known source, the known audio data stream being divided into a plurality of segments of known audio data, the similarity module performing comparisons between the segments of unknown input audio data and respective segments of known audio data and generating a respective plurality of similarity values representative of similarity between the segments of the comparisons, the comparisons being performed serially, the similarity module terminating the comparisons if the similarity values indicate insufficient similarity between the segments of the comparisons, prior to completing comparisons for all segments of the unknown input audio data.