Acoustic Analysis of Lahu Nyi Tone System

Jirapas Jangjamras, Ratree Wayland, Si Chen

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review


This study represents the first acoustic analysis of the seven-tone system of Lahu Nyi, a dialect of Lahu, a Tibeto-Burman language spoken in Muang Na
subdistrict, Chiang Dao district, Chiang Mai province, Thailand. One male and two female native speakers produced the seven tones in isolation and in a sentence context. Pitch contour analysis showed five long tones in open syllables and two short tones in syllables closed with a glottal stop. Low tones are slightly breathy. Pitch contour modification was observed in the sentence context produced by the
male speaker where a high-mid falling tone exhibits a rising contour in the context of a following high-mid falling tone.
Original languageEnglish
Title of host publicationProceedings of the 19th International Congress of Phonetic Sciences
EditorsSasha Calhoun, Paola Escudero, Marija Tabain, Paul Warren
Place of PublicationCanberra
PublisherAustralasian Speech Science and Technology Association Inc.
Number of pages5
ISBN (Electronic)9780646800691
Publication statusPublished - Aug 2019


  • Lahu Nyi
  • tone
  • F0 patterns
  • glottalization
  • duration


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