The IPA
International phonetic alphabet, used for transcription
- 1 symbol for every sound used distinctively in 1+ languages
Airstream mechanisms
expelled = egressive inhaled = ingressive
larynx
Modulates airflow, acts as a valve
Vocal tract
pharynx, oral & nasal cavity
- Filters ot modify sound
Glottis
Space between folds where air passes
Voiceless
Folds apart
Voiced
Folds together
Breathy
Folds partially open
Creaky
Folds compressed and slack
Why vocal organs?
-Larynx descended lower in humans than other primates for speech
Advantage: Tongue can produce wider range of sound
Disadvantage: Easier to choke
Vowels described articulatory, Aerodynamically and by sound class (acoustic)
Artic. : Open vocal tract
Aero: Laminal (direct air flow)
Class: More acoustic energy
Consonants described particularly, Aerodynamically and by sound class (acoustic)
Artic. : Closed vocal tract
Aero: No/turbulent air flow
Class: Less acoustic energy, intervals of silence
Stops/plosives
Build up then release of pressure
Fricative
Small opening, turbulent flow
Affricate
Stop with slow release
Sibilant affricates and fricatives
Stridents
Non-sibilant affricates and fricatives
Quieter than sibilants, e.g. “th”
Obstruents
Stops, fricatives, affricates
- Obstructed airflow
- Turbulent = noise
Opposite = Sonorants
Sonorants
Liquids, approximates, glides, nasals, vowels
- Non-turbulent
- More sonorous
Opposite = Obstruents
*Nasals, liquids and glides can be syllabic
Approximates
Liquids and glides
Nasals
Oral stops
Articulatory description for vowels
Acoustic description for vowels
- Characteristic resonant frequencies (formant frequencies) determined by shape of vocal tract
Acoustic description
More accurate than articulatory descriptions
- Less intuitive