SPEECH RECOGNITION

"I enjoy working with people."--HAL 9000“Open the pod bay doors, Hal."--Dave Bowman (Keir Dullea)"I'm sorry, Dave. I'm afraid I can't do that."--HAL"What's the problem?"--Dave"I think you know what the problem is just as much as I do."--HAL"What are you talking about, Hal?"--Dave"This mission is too important for me to allow you to jeopardize it."--HAL

A BRIEF INTRODUCTION

WHAT IS SPEECH RECOGNITION?

• SPEECH

• FEATURES USED IN RECOGNITION

SPEECH RECOGNITION SYSTEMS

CLASSIFICATION

Classification continued..

Isolated Word Recognition

Continuous speech Recognition

Classification continued…

• Speaker dependent

• Speaker independent

• Connected word

• Conversational

Basic phases of SR

• Training Phase

• Recognizing phase

Phases

How do they work?

• Audio Recording/Detection

• PreFiltering

• Framing/Windowing

• Additional filtering

• Matching

Applications/Uses

• Dictation

• Command

• Telephony

• Medical

• Embedded systems

• Car Industry

• Education

Contemporary Speech Recognition Software

• Dragon

• IBM

• Keystone Speech master

• Microsoft Office XP(inbuilt)

FUTURE IN SPEECH RECOGNITION

• Conversational recognition systems

• Reduction in voice drift

• Simplicity

• Improved hardware design

Future Applications

• Computer and Video Games

• Gambling

• Precision Surgery

• Domestic applications

• Wearable computers

Conclusion

REFERENCES• Digital Speech Processing, Synthesis, and Recognition

by Sadaoki Furui published in 1989 by Tokai University Press

• Trends in Speech recognition by Wayne A .Lea . 1980 by Prentice Hall

• http://www.jiscmail.ac.uk/lists/FONETIKS.html

• http://www.kpn-telecom.nl/cave/

• http://cortex.itc.it/

• http://www.canberra.edu.au/pathways/papers

• http://www.edc.org