Perception of Time-Varying Signals: Timbre and Phonetic JND of Diphthong

Subramaniam A, Sreenivas TV. Perception of Time-Varying Signals: Timbre and Phonetic JND of Diphthong. In: AES Convention 133. Audio Engineering Society; 2012. Paper 8774. Available from: https://aes.org/publications/elibrary-page/?id=16516

@inproceedings{Subramaniam2012_16516,
  author = {Subramaniam, Arthi and Sreenivas, Thippur V.},
  title = {{Perception of Time-Varying Signals: Timbre and Phonetic JND of Diphthong}},
  booktitle = {AES Convention 133},
  note = {Paper 8774},
  year = {2012},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=16516}
}

TY  - CPAPER
TI  - Perception of Time-Varying Signals: Timbre and Phonetic JND of Diphthong
AU  - Subramaniam, Arthi
AU  - Sreenivas, Thippur V.
T2  - AES Convention 133
M1  - Paper 8774
PY  - 2012
DA  - 2012/10/06
UR  - https://aes.org/publications/elibrary-page/?id=16516
PB  - Audio Engineering Society
LA  - en
AB  - In this paper we propose a linear time-varying model for diphthong synthesis based on linear interpolation of formant frequencies. We, thence, determine the timbre just-noticeable difference (JND) for diphthong /a I/ (as in ‘buy’) with a constant pitch excitation through perception experiment involving four listeners and explore the phonetic JND of the diphthong. Their JND responses are determined using 1-up-3-down procedure. Using the experimental data, we map the timbre JND and phonetic JND onto a 2-D region of percentage change of formant glides. The timbre and phonetic JND contours for constant pitch show that the phonetic JND region encloses timbre JND region and also varies across listeners. The JND is observed to be more sensitive to ending vowel /I/ than starting vowel /a/ in some listeners and dependent on the direction of perturbation of starting and ending vowels.
ER  -