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Speech recognition final

Date post: 05-Dec-2014
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Speech Recognition by- Arpit Kumar (2191) Nitin Kanaujia (2269) Mentor- Mr. B Suresh
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Page 1: Speech recognition final

Speech Recognition

by-Arpit Kumar (2191)Nitin Kanaujia (2269)Raghav Vij (2291)

Mentor-Mr. B Suresh

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Introduction•What is speech?

•What is speech recognition?

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Why do we need speech recognition

•Most Natural Form Of Communication• Differently abled people• Illiterate• Helplines• Cars

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TYPES

• An Automated Speech Recognition can be-• Speaker dependent• Speaker independent• Continuous Speech• Limited Vocabulary• Unlimited Vocabulary

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How speech recognition works

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• Speech segment extraction-Three classes of sound –• Voiced sound , unvoiced sound and silent• Get differentiated on entropy , energy and zero

crossing theorems• Speech signal capture• Endpointing• Feature extraction from speech signal• Template matching algorithm• Acoustic models• Language models • Pronunciation models

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Recognition Flowchart presentation

Voice Input Analog to Digital Acoustic Model

Language Model

Display Speech EngineFeedback

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Real life example

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Speech Recognition Problems

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Application

Driver - Car Interaction


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