Term Project

Close-Set, Text-Dependent, Twelve(12) people, Speaker Identification Using ANN

(Artificial Neural Networks)

JAY DESAI KUANG-TAO CHIAO

Introduction

OverviewClosed Set/Open SetText Dependent/Text IndependentSpeaker Identification/Speaker

Verification

System Architecture

Block Diagram

Some Plots we obtained

Short-time Energy

The 4 vowelsShort time energyLog plot

Frame Extraction

3 frames/vowel168 Cepstral Coeff.

Password

/u/ /i/ /æ/ /a/Why the choice of password?Vowel PlaneThe Phoneticians vowel trapezium

Linear Predictive Coding

Why LP analysis?Feature ExtractionComputational aspectsLPC Cepstrum

Artificial Neural NetworksArtificial Neural Networks

wki

θk

yk

nk

Back Propagation

Potential Applications

Meetings, Conferences, Conversations

Law enforcementSecurity applicationHuman-Machine InterfaceGender recognitionOthers

Scope of Improvement

RobustnessAdditive NoiseCo-channel InterferenceIncreasing the number of users