Identification Process

Identification.  During an identification process, there is no initial claim of identify made. Instead, an individual is simply prompted to submit a speech sample. A temporary voiceprint is made from the speech sample and is then compared to all reference voiceprints stored in the database in order to find the best match.

Pre-Processing and Feature Extraction.  As with the enrollment process, the identification sample is evaluated with a number of audio quality tests. Once these tests have passed, features are extracted.

Comparison.  A temporary template (or voice print) is created. This temporary voice print is then compared to all reference voice prints stored in the database. Various classification techniques are used to speed this process up (for instance, male versus female vocal characteristics).

Maximum Likelihood.  The identification process does not use a score threshold. Instead, all results are ranked in reverse order and are returned with the match probability and raw score. Our system suggests the best match, but our service API returns all results so that client systems can make the final decision or perform additional calculations if desired.