Alif Silpachai - Research

The relationship between optimal stimulus variability and second-language sound perception improvement
The relationship between phonological voicing contrast and consonant-induced fundamental frequency perturbations (CF₀)

Paper: Silpachai, A. (in revision). Consonant-induced pitch perturbations in different linguistic contexts in Thai.
Poster: Silpachai, A. (2019). The roles of vowel length and sentential context in onset pitch perturbations in Thai. The Journal of the Acoustical Society of America.

Note: The above project is part of my dissertation (2021).

The temporal coordination between consonants, vowels, and tones

Paper: Silpachai, A. (in preparation). The temporal coordination between consonants, vowels, and tones in Thai.

The adaptation of Thai tones in Mon

Paper: Silpachai, A. (in preparation). The adaptation of Thai tones in Mon.

The reconstruction of Proto-Tai tones

Paper: Silpachai, A. (in preparation). The reconstruction of Proto-Tai tones.

The relationship between phonological voicing contrast and domain-initial strengtening (DIS)

Silpachai, A. (2024). The boundary-induced modulation of obstruents and tones in Thai. Journal of Phonetics, 102, 101291. [link]
Poster: Silpachai, A. (2020). Prosodic structural and tonal contextual modulation of Voice Onset Time and consonant-induced fundamental frequency in the three-way laryngeal contrast in Thai. The Journal of the Acoustical Society of America.

The relationship between pitch perception and tone-word learning

Paper: Please see my dissertation (2021).

Perceptual training of non-native sound contrasts

Paper: Silpachai, A. (2020). The role of talker variability in the perceptual learning of Mandarin tones by American English listeners. Journal of Second Language Pronunciation, 6(2), 209-235. [link]

Poster: Silpachai, A. (2018). Using high variability phonetic training to train non-tonal listeners with no musical background to perceive lexical tones. The Journal of the Acoustical Society of America, 143(3), 1953-1953.

Temporal coordination between consonants, vowels, and tones

Silpachai, A. (2014). The temporal organization between initial consonants and lexical tones [Unpublished master’s thesis]. University of Southern California. [PDF]

Loanword adaptation of tone-words in register languages

Poster: Silpachai, A. (2013). The adaptation of tones in a language with registers: A case study of Thai loanwords in Mon. The Journal of the Acoustical Society of America, 134(5), 4247-4247.

The relationship between tones and intonation

Proceeding: Silpachai, A. (2013, June). Prosodic characteristics of two focus types in emphatic context in Thai. In Proceedings of Meetings on Acoustics ICA2013 (Vol. 19, No. 1, p. 060209). ASA.

Poster: Silpachai, A. (2013). Prosodic characteristics of two focus types in emphatic context in Thai. Meetings on Acoustics ICA2013

Poster: Silpachai, A. (2012). Prosodic characteristics of three sentence types in Thai. The Journal of the Acoustical Society of America, 132(3), 2004-2004.

* A Tai Lue (and Tai Khün?) proverb meaning "spoken words even if there are ten words or twenty words are not the same as one ink mark" (lit: speak-only-ten-word-twenty-word NEG-equal-mark-ink-black-CLF-one; Thai cognates: ปากดาย ๆ สิบคำซาวคำ บ่เท่าหมายน้ำหมึกดำตัว ๑). Notice how คำ rhymes with ดำ.

My interpretation from the perspective of a researcher: This is a warning to people who have amazing ideas but do not publish them. There probably have been many geniuses whose unpublished ideas we will never hear about.