CS626-449: Speech, NLP and the Web/Topics in AI - PowerPoint PPT Presentation

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CS626-449: Speech, NLP and the Web/Topics in AI

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CS626-449: Speech, NLP and the Web/Topics in AI Pushpak Bhattacharyya CSE Dept., IIT Bombay Lecture-19: Speech: Phonetics (Using Ananthakrishnan s presentation for ... – PowerPoint PPT presentation

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Title: CS626-449: Speech, NLP and the Web/Topics in AI


1
CS626-449 Speech, NLP and the Web/Topics in AI
  • Pushpak Bhattacharyya
  • CSE Dept., IIT Bombay
  • Lecture-19 Speech Phonetics
  • (Using Ananthakrishnans presentation for the
    first part)

2
Morphology to Phonology an exercise
  • The plural morpheme
  • -s
  • /s/ (cats)
  • /z/ (dogs)
  • /iz/ (bushes)
  • Which sound occurs where?

3
Phonetics
  • The study of speech sounds
  • Articulatory
  • Acoustic
  • Auditory
  • Phonology the structure and patterning of sounds
  • Phonetic Transcription
  • A writing system for representing speech sounds

4
The need for phonetic transcription
  • English Spelling
  • Put/Putt
  • Car/Kite
  • Rough/Puff
  • Fish can be spelt ghoti. How?
  • A language for talking about other/newly
    discovered languages
  • New languages are discovered very frequently

5
(No Transcript)
6
Classification
  • Manner of articulation
  • Place of articulation
  • Voicedness

7
Stops
  • /p/ - voiceless bilabial
  • /b/ - voiced bilabial
  • /t/ - voiceless alveolar
  • /d/ - voiced alveolar
  • /k/ - voiceless velar
  • /g/ - voiced velar

8
Fricatives
  • /f/ - ?
  • /v/
  • /th/
  • /dh/
  • /s/
  • /sh/
  • /zh/
  • /h/

9
Affricates
  • /ch/ - ?
  • /jh/

10
Nasals
  • /m/ - ?
  • /n/
  • /ng/

11
(No Transcript)
12
The plural sound
  • Cats, racks /s/
  • dogs, rags /z/
  • Bushes, classes /iz/
  • Hypotheses?

13
A kudo to each of you!
  • Kudos pronounced with an /s/ sound at the end
  • Misinterpreted as a plural
  • One kudo, many kudos
  • Pronunciation becomes kudo/z/!

14
Next
  • Vowels

15
Thanks!
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