Proto-Tai Tones
1 min read · 59 words
Tone A (*...ᴬ): Mid level pitch flat contour
Tone B (*...ᴮ): Low rising pitch raised sharply at the end of the syllable
Tone C (*...ᶜ): Mid-high falling pitch accompanied by a creaky or breathy voice quality
Tone D (*...ᴰ): No independent pitch contour. Determined by the vocal tract tension of the initial consonant and the length of the vowel