BY:K.Senthil kumar B.E(EEE) SACS MAVMM ENGG COLLEGE Madurai

Speech Recognition

INTRODUCTION

•What is speech recognition?

Speech Recognition (SR) is the ability to translate a dictation or spoken word to text.

Also known as “automatic speech recognition” (ASR), “computer speech recognition”, or “speech to text” (STT)

INTRODUCTION

WHY DO WE NEED SPEECH RECOGNITION• Most Natural Form Of Communication• Differently abled people• Illiterate• Helplines• Cars

SPEECH PRODUCTION PSYSIOLOGY

PROCESS OF SPEECH RECOGNITION

Speaker Recognition

Speech Recognition

parsingand

arbitration

S1

S2

SK

SN

HOW IT WORKS??

Speech recognition Engine

Grammar

Acoustic model

Audio input Recognized

Text

HOW DO HUMANS DO IT?

Articulation produces sound waves which the ear conveys to the brain for processing

RECOGNITION

Voice Input Analog to Digital Acoustic Model

Language Model

Display Speech EngineFeedback

APPLICATIONS Medical Transcription Military Telephony and other domains Serving the disabledFurther Applications• Home automation• Automobile audio systems• Telematics

ADVANTAGES

Advances in technology will allow consumers and businesses to implement speech recognition systems at a relatively low cost. Cell-phone users can dial pre-programmed numbers by voice command. Users can trade stocks through a voice-activated trading system. Speech recognition technology can also replace touch-tone dialing resulting in the ability

to target customers that speak different languages. Disabilities person easy handling.

CONCLUSION

Revolutionize the way people conduct business over the Web and ,differentiate world-class e-businesses.

VoiceXML ties speech recognition and telephony together voice-enabled Web solutions TODAY!

Thank you…