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 Ananthakrishnans presentation for the
  first part)

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Morphology to Phonology an exercise

• The plural morpheme
• -s
• /s/ (cats)
• /z/ (dogs)
• /iz/ (bushes)
• Which sound occurs where?

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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

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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

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(No Transcript)
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Classification

• Manner of articulation
• Place of articulation
• Voicedness

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Stops

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

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Fricatives

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

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Affricates

• /ch/ - ?
• /jh/

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Nasals

• /m/ - ?
• /n/
• /ng/

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(No Transcript)
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The plural sound

• Cats, racks /s/
• dogs, rags /z/
• Bushes, classes /iz/
• Hypotheses?

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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/!

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Next

• Vowels

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Thanks!