1 / 23

Glides (/w/, /j/) & Liquids (/l/, /r/)

Degree of Constriction Greater than vowels P oral slightly greater than P atmos Less than fricatives P oral for glides/liquids < P oral for fricatives Constriction lasts ~ 100 msec Constriction results in a loss in energy weaker formants. Transition rate faster than the diphthongs

Download Presentation

Glides (/w/, /j/) & Liquids (/l/, /r/)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Degree of Constriction Greater than vowels Poral slightly greater than Patmos Less than fricatives Poral for glides/liquids < Poralfor fricatives Constriction lasts ~ 100 msec Constriction results in a loss in energy weaker formants Transition rate faster than the diphthongs slower than the stops lasts ~ 75-250 msec Glides (/w/, /j/) & Liquids (/l/, /r/) Associated with 1. high degree of vocal tract constriction 2. articulatory transition Stephen M. Tasko

  2. Place: labial Acoustics /u/-like formant frequencies Constriction  formant values F1 ~ 330 Hz F2 ~ 730 Hz weak F3 (~ 2300 Hz) /w/ 3000 F3 2000 Freq (Hz) F2 1000 F1 V V w Stephen M. Tasko

  3. Place: palatal Acoustics /i/-like formant frequencies F1 ~ 300 Hz F2 ~ 2200 Hz F3 ~ 3000 Hz 3000 F3 2000 F2 1000 F1 V j V /j/ Freq (Hz) Stephen M. Tasko

  4. /j/ V j V Stephen M. Tasko

  5. Liquids (/l/, /r/) • lateral /l/ • Rhotic /r/ • Pickett (1999) considers these consonants glides as well Stephen M. Tasko

  6. Place: palatal Articulatory phonetics Variable tongue positions “bunched” “retroflexed” Allophonic Variations Some suggest “dark” (CV) –very low F3 “light” (VC) –F3 not as low Acoustics Hallmark of /r/ is a low F3 F1 ~ 350 Hz F2 ~ 1050 Hz F3 ~ 1550 Hz Vowels have F3 above 2200 Hz Vowels around /r/ are colored or F3 values lower than usual /r/ Stephen M. Tasko

  7. /r/ Freq (Hz) 3000 F3 2000 F2 1000 F1 V r V Stephen M. Tasko

  8. Role of F3 transition in /w/ vs. /r/ perception Stephen M. Tasko

  9. /r/ “coloring” of vowels // // Stephen M. Tasko

  10. Articulatory Variability and /r/ Stephen M. Tasko

  11. Point parameterized representation Bunched Stephen M. Tasko

  12. Point parameterized representation Retroflexed Stephen M. Tasko

  13. Between-speaker variation “row” “row” JW39 tp004 JW45 tp004 Very common Stephen M. Tasko

  14. Within-speaker variation: different context “row” “dorm” JW37 tp009 JW37 tp099 Common Stephen M. Tasko

  15. Within-speaker variation: same context “right” “right” JW37 tp009 JW37 tp099 Not common, but possible! Stephen M. Tasko

  16. N=53 normal speakers Not just two different configurations, but a whole family of possible configuration From Westbury et al. (1998) Stephen M. Tasko

  17. How can these vastly different tongue configurations lead to similar acoustic/perceptual consequences? Stephen M. Tasko

  18. Stephen M. Tasko

  19. Summary • There is a wide distribution of articulatory configurations for /r/ • Different articulatory configurations of /r/ are indistinguishable acoustically and perceptually • Different tongue configurations can produce equivalent area functions • Some parts of the area function are more critical than others for determining key acoustic/perceptual effects Stephen M. Tasko

  20. Clinical Digression • Clinically, /r/ is a difficult sound for children to learn. • Is there anything from our discussion that might suggest why this might be the case? Stephen M. Tasko

  21. Place: alveolar Articulatory phonetics: tongue tip contacts alveolar ridge, splitting the vocal tract Introduces antiformants Acoustics F1 ~ 360 Hz F2 ~ 1300 Hz F3 ~ 2700 Hz F2 is variable and affected by vowel environment Transition often looks more abrupt than other sounds discussed Allophonic variations Light /l/: CV environment Dark /l/: VC environment /l/ Stephen M. Tasko

  22. /l/ 3000 F3 2000 Freq (Hz) F2 1000 F1 V l V Stephen M. Tasko

  23. /l/ V l V Stephen M. Tasko

More Related