voice authentication lavanya1

8/9/2019 Voice Authentication Lavanya1

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SEMINOR TITLE: Voice Authentication

Seminar by:

A.V.Lavanya

(2007-2011)


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VOICE AUTHENTICATION

A user- dependant pattern matchingsystem which uses a persons voice

print to uniquely identify individuals

using Biometric Speaker Verification

Technology.



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INTRODUCTION:

uses voice prints and pattern recognition software to

verify a speaker

relies on the fact that vocal characteristics are

unique for each individual

more reliable than passwords


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INTRODUCTION:

uses voice prints and pattern recognition software to

verify a speaker

relies on the fact that vocal characteristics are

unique for each individual

more reliable than passwords


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Need for Authentication:

Identify theft and fraud

Caller authentication

Voice Authentication

To protect confidential client information and

fighting identity theft.

To reduce cost of help desks and customer

contact centers.


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Speaking is natural and effortless. But your

voice is something that is unique to you. No two

voices are exactly the same. Voice differs from

other forms of biometric verification such asfingerprints or iris scans. It requires no special

equipment. It works over any phone, anywhere,

including the internet.

Why Voice ?


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Captures a person's voicethe physical

characteristics of the vocal tract and its

harmonic and resonant frequenciesandcompares it to a stored voice print created

during an enrollment process.

Working of Speech Analysis System:


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Step1: User Enrollment

1.Customer enters his account or ID no., and then the

system prompts him to speak a pass phrase (typically

either a chore password or a series of digits) three times.

2.The speech analysis system applies a mathematical

algorithm to the input to create a unique voice print.

Having the user repeat the pass phrase enables the

system to account for variances.

3.The voice print is stored in a speaker register database.


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Step2: User Authentication

1. User enters or speaks his account ID and speaks thepass phrase.

2. The voice authentication system stores the input and

compares it to the voice print in the speaker registry

database.

3.If the voice matches, he/she is granted access, otherwisehe/she is rejected.


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Back End consists of:

*Waveform warping module

*A pattern-recognition module

The back-end functions as a memory and storage

database, as well as a decision unit that implements an

algorithm to pattern match the template waveform

(speakers voice) to that of the input waveform.


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Web Authentication:

Security internet and other remote access serviceshas never been more difficult or important.

Passwords can be easily stolen and provide only a

low level of security. Digital certificates only verify

the actual computer accessing your service, notnecessarily the person at the keyboard. Webauthentication delivers the ultra high level of

website access security and identifies protection

required to protect confidential information andtransactions.


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The user accesses the website login page. The website automatically generates a unique session code

which is displayed on the user screen, together with a phone

number.

The user calls the voice system and is asked to speak their ID

and session code. The users identity is voice verified. Voice verification system sends the session code and verified

user ID to the website server. The website server generates a

use once pass code which is sent back to Voice verification

system.

Voice verification systems text to speech engine converts thepass code into words spoken back to the user.

The user enters the use once pass code into the website login

page to complete the process.

Working:


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Voice Concerns

In real world this system has to deal

with behavior and environmental factors such as

background noises or changes in user voices.


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SEMINOR TITLE: Bio-Metrics DATE:5-2-2010


QUERIES?


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