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Voice Biometrics

Voice Biometrics

What is voice authentication?

Voice authentication is a biometric technology; one that uses the unique acoustic characteristics of a person’s voice to confirm that “they are who they say there are” – literally!

Each person’s voice is unique. This is caused by a combination of the way a person has learnt to speak and the anatomical characteristics of their vocal tract. Together these aspects contribute to create each individual’s unique voice quality. Voice authentication system use this factor to provide an effective and convenient process for confirming identity.

Voice authentication is a two stage process. The first stage, called enrolment, involves processing a sample of a person voice to extract and encode their unique voice characteristics. The second stage, authentication, involves sampling the speakers voice, processing as in the enrolment phase and comparing the voice characteristics against those in the enrolled sample. The user can then obtain a measure as to how closely the speakers voice compares to the voice of the enrolled sample.

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