Verification is the process of comparing a person’s “sample” voiceprint to their “base” voiceprint obtained during the enrollment process. If the voiceprints match, based on a probability score, the person’s identity is verified.
Text-dependent voice biometrics systems require a person to speak the same pass phrase(s) during enrollment and verification. Text–independent systems do not. The person can be asked to repeat a series of random pass phrases to capture a “sample” voiceprint. Or, the “base” and “sample” voiceprints can be obtained in the background – even without the person’s knowledge (ideal for forensic applications).
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