Chapter 7. Voice Biometric Technologies

The use of voice for biometric authentication seems natural and appropriate. From an early age, we learn to recognize the sound of our parents' voices. Voice provides a very important source of sound for the sense of hearing. The interpretation of a voice we perceive can tell us a lot about someone. It can tell us their relative distance to us, their emotion, and, most importantly, we can associate the voice with someone we know. Like recognizing a face, we have all made the mistake of thinking that we recognized a voice when we did not. This could have happened due to the acoustic conditions under which we heard the voice. In addition, our sense of what direction and how far someone is away from us can ...

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