Understanding Utterance and Speaker Verification in Voice Biometrics

 If you’re using active Voice Biometrics, you need to say a passphrase to enable the system: first to establish a baseline, and afterward to check your unique voiceprint.

Talkdesk Identity™ includes a series of pre-configured pass-phrases. With some of these passphrases, Identity performs:

1. Utterance checks, i.e., detecting whether you are saying the right phrase. This is used to guarantee that the spoken passphrase matches the one requested.

2. Second speaker checks, i.e., detects if two users are creating a voiceprint (aka enrolling) as if they were one user only. This ensures there is a 1:1 ratio between a voiceprint and a single user.

 

Passphrases supporting Utterance and Second Speaker Verification

Language Passphrase Utterance Verification Second Speaker Verification
English Please authenticate me with my voice. Yes Yes
English My password is my voice. Yes Yes
English My voice is my password. Yes Yes
Spanish Por favor verifícame con mi voz. Yes Yes
Spanish Por favor autentícame con mi voz Yes Yes
German Bitte verifiziere mich mit meiner Stimme. Yes Yes
German Bitte authentifiziere mich mit meiner Stimme. Yes Yes
French Vérifiez mon identité grâce à ma voix. Yes Yes
French Authentifiez moi grâce à ma voix. Yes Yes

 

Passphrases not supporting Utterance and Second Speaker Verification

Language Passphrase Utterance Verification Second Speaker Verification
English My password is my voice. No No
Spanish Mi contraseña es mi voz. No No

 

Note: The passphrase “My password is my voice” can be used with or without utterance and second speaker support. To choose without the support of both in the Passphrase selection box, you need to select the passphrase that has “(no utterance)”, as in the image below:

An admin can also configure a specific custom passphrase, more suitable for their relationship with the customers. In this case, neither utterance nor second-speaker verification is supported.

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