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Grapheme Data for Tai Dam written with Tai Viet script

Tai Dam (ISO code blt) is a Tai language of Vietnam. It is primarily spoken in Sơn La province and surrounding areas of Vietnam and Laos. The Tai Viet script (ISO code Tavt) is the traditional script used by the Tai Dam and several closely related languages.

There are a number of variations in the way the language is written. That shown here represents the writing of Baccam Don, from Thuan Chau in Sơn La Province.

My primary sources are:

  • Baccam Don, Baccam Faluang, Baccam Hung and Dorothy Fippinger, Tai Dam-English, English-Tai Dam Vocabulary Book, 1989.
  • Fippinger, Jay and Dorothy Fippinger, “Black Tai Phonemes with Reference to White Tai,” Anthropological Linguistics, 12:83-97, March 1970.
  • Gedney, William J. “A Comparative Sketch of White, Black, and Red Tai.” The Social Science Review, Special Number (1964).

Note that I use the “high” and “low” tone series labels as they are used by the language community, which are reflected in the Unicode character names, and which are the reverse of the way the labels are used in the Tai linguistic community.

Like all Tai languages, Tai Dam vowels are written above, below, to the left, and to the right, of the initial consonant. A dotted circle is used here to show the position of the vowel relative to the initial consonant. But Tai Dam is visually encoded, so the left-side and right-side vowels are spacing characters, not diacritics, even though they are shown here with the dotted circle.

Tai Dam has six tones: four level tones and two glides. The tone numbering system most often used for the spoken language is that introduced by Gedney 1964, and Fippinger 1970:

  • Lower-mid level
  • High rising
  • Low: level or falling, terminated by a glottal catch
  • High level
  • Higher-mid level
  • Mid falling: abruptly falling from the level of tone 5, terminated by a glottal catch

Only tones 2 and 5 occur on checked syllables (i.e. closed syllables ending with /p/, /t/, /k/, or /ʔ/).

I have chosen to represent the level tones with the tone bars Extra High, High, Low, and Extra Low, respectively (omitting the Mid tone bar).

In the written language, three different tone marking systems have been used for the Tai Viet in different times and places:

  • Historically, tones were not marked beyond the use of the high and low series consonants. In this system, tones are underdifferentiated. This system would be used in all documents before 1975, but is less common now.
  • Since 1975, one segment of the Tai Dam community has adopted the use of the Lao diacritic tone marks Mai Ek (U+AABF) and Mai Tho (U+AAC1).
  • Another segment of the Tai Dam community has created a pair of spacing tone marks, Mai Nueng (U+AAC0) and Mai Song (U+AAC2).

Tone systems 2 and 3 are parallel to each other, with Mai Ek being equivalent to Mai Nueng, and Mai Tho equivalent to Mai Song.

Tone system 1 can be derived from either of the other two by omitting the Mai Ek and Mai Tho, or Mai Nueng and Mai Song.

I have chosen to describe systems 2 and 3 here.

Abbreviations: In the tone-related graphemes, -Low C- indicates the use of a Low Series Consonant for the intial consonant; -High C- indicates the use of a high series consonant in the initial position.

Contributor: Jim Brase, SIL International

Grapheme USV Phoneme Status Example Notes
<> AA80 /ʔ/ expected ꪨꪱꪀ ‘different’ syllable final
<> AA80 /k/ expected ꪀꪲꪙ ‘to eat’, ꪬꪷꪀ ‘to break’ low tone series (syll. init.), and syllable final
<> AA81 /k/ expected ꪁꪾ ‘gold’ high tone series (syll. init.)
<> AA84 /x/ expected ꪄꪱꪥ ‘to sell’ low tone series (syll. init.)
<> AA85 /x/ expected ꪼꪅ꫁ ꪙꪲ꫁ ‘now’ high tone series (syll. init.)
<> AA88 /ŋ/ expected ꪈꪾ꪿ ‘to think’ low tone series (syll. init.)
<> AA89 /ŋ/ expected ꪹꪋ꪿ꪉ ‘thing’ syllable final
<> AA8A /tʃ/ expected ꪊꪴ꫁ꪣ ‘fishnet’ low tone series (syll. init.)
<> AA8B /tʃ/ expected ꪵꪋ ‘tea’ high tone series (syll. init.)
<> AA8E /s/ expected ꪎꪲ꪿ ‘four’ low tone series (syll. init.)
<> AA8F /s/ expected ꪏꪳ꫁ ‘to buy’ high tone series (syll. init.)
<> AA90 /ɲ/ expected ꪐ꫁ꪱ ‘grass’ low tone series (syll. init.)
<> AA91 /ɲ/ expected ꪑꪷꪉ ‘alive’ high tone series (syll. init.)
<> AA92 /d/ expected ꪵꪒꪉ ‘red’ low tone series (syll. init.)
<> AA92 /t/ expected ꪵꪜꪒ ‘eight’ syllable final
<> AA93 /d/ obsolete the high series /d/ has merged with /l/ and is no longer used.
<> AA94 /t/ expected ꪔꪱ ‘eye’ low tone series (syll. init.)
<> AA95 /t/ expected ꪹꪕꪸꪉ ‘above’ high tone series (syll. init.)
<> AA96 /tʰ/ expected ꪖ꫁ꪱ ‘to wait’ low tone series (syll. init.)
<> AA97 /tʰ/ expected ꪗꪴꪉ ‘barrel’ high tone series (syll. init.)
<> AA98 /n/ expected ꪘꪱꪫ ‘cold’ low tone series (syll. init.)
<> AA99 /n/ expected ꪙꪮꪙ ‘to sleep’ syllable final
<◌ꪾ> AA9A AABE /ap/ =
/a/ + /p/
rare ꪝꪾꪚ ‘to fold’ short /a/ + /p/ (alternative)
<> AA9A /b/ expected ꪚꪲꪙ ‘to fly’ low tone series (syll. init.)
<> AA9A /p/ expected ꪎꪲꪚ ‘ten’ syllable final
<> AA9B /b/ expected ꪛꪱꪥ ꪵꪮꪚ ‘lesson’ high tone series (syll. init.)
<> AA9C /p/ expected ꪜꪱ ‘fish’ low tone series (syll. init.)
<> AA9D /p/ expected ꪝꪱ ‘to carry’ high tone series (syll. init.)
<> AAA0 /f/ expected ꪶꪠꪙ ‘rain’ low tone series (syll. init.)
<> AAA1 /f/ expected ꪡ꫁ꪱ ‘sky’ high tone series (syll. init.)
<> AAA2 /m/ expected ꪻꪢ꪿ ‘new’ low tone series (syll. init.)
<> AAA3 /m/ expected ꪘꪱꪣ ‘thorn’ syllable final
<> AAA4 /j/ expected ꪤꪴ꪿ ‘to dwell’ low tone series (syll. init.)
<> AAA5 /j/ expected ꪜꪱꪥ ‘tip, point’ final consonant - realized phonetically as a high close front unrounded vowel
<> AAA8 /l/ expected ꪨꪷꪉ ‘after’ low tone series (syll. init.)
<> AAA9 /l/ expected ꪩꪴꪀ ‘child’ high tone series (syll. init.)
<> AAAA /v/ expected ꪪꪲ ‘comb’ low tone series (syll. init.)
<> AAAB /w/ expected ꪵꪫ꪿ꪫ ‘chipped’ final consonant - realized phonetically as a high close back rounded vowel
<> AAAB /v/ expected ꪵꪫ꪿ꪙ ‘glass’ high tone series (syll. init.)
<> AAAC /h/ expected ꪬꪱ ‘to seek’ low tone series (syll. init.)
<> AAAD /h/ expected ꪭꪴ꫁ ‘to know’ high tone series (syll. init.)
<> AAAE /ʔ/ expected ꪮ꫁ꪱꪥ ‘father’ low tone series (syll. init.)
<> AAAE /ɔ/ rare in open syllables
<> AAAF /ʔ/ expected ꪹꪯꪸꪣ ‘mother’ high tone series (syll. init.)
<◌ꪰ> AAB0 /a/ common ꪏꪰꪀ ‘to launder’ See /aː/. The short /a/ has a quality contrast as well as a length contrast. The pronunciation may be close to [ɐ]. The short /a/ occurs only in closed syllables, without final /ʔ/. Various script dialects will favor either U+AAB0 or U+AAB7.
<> AAB1 /aː/ expected ꪀꪱ ‘crow’ Tai Dam has length contrast only between /aː/ and /a/.
<◌ꪲ> AAB2 /i/ expected ꪜꪲ ‘year’
<◌ꪳ> AAB3 /ɨ/ expected ꪊꪳ꪿ ‘to remember’ fluctuates freely to [ɯ]
<◌ꪴ> AAB4 /u/ expected ꪬꪴ ‘ear’
<> AAB5 /ɛ/ expected ꪵꪕ꫁ ‘true’
<> AAB6 /o/ expected ꪶꪬꪀ ‘six’
<◌ꪷ> AAB7 AA9A /ap/ =
/a/ + /p/
rare ꪝꪷꪚ ‘to fold’ short /a/ + /p/ (alternative)
<◌ꪷ> AAB7 /ɔ/ common ꪀꪷ ‘plant’ in open syllables only
<◌ꪷ> AAB7 /a/ common ꪏꪷꪀ ‘to launder’ See /aː/. The short /a/ has a quality contrast as well as a length contrast. The pronunciation may be close to [ɐ]. The short /a/ occurs only in closed syllables, without final /ʔ/. Various script dialects will favor either U+AAB0 or U+AAB7.
<◌ꪸ> AAB8 /ɪə/ expected ꪣꪸ ‘wife’ may fluctuate freely with [iə]
<> AAB9 AAB1 /aw/ =
/a/ + /w/
expected ꪹꪔ꪿ꪱ ‘turtle’ ligature: short /a/ + /w/
<◌ꪷ> AAB9 AAB7 /ə/ expected ꪹꪩꪷꪉ ‘often’
<◌ꪸ> AAB9 AAB8 /e/ expected ꪹꪢꪸꪒ ‘all’
<> AAB9 /ɨə/ expected ꪹꪣ ‘to go’
<> AABA /ʊə/ expected ꪣꪺ ‘dim’ may fluctuate freely with [uə]
<> AABB /əw/ =
/ə/ + /w/
expected ꪻꪄ꪿ ‘dry’, ꪻꪠ ‘who’ ligature: /ə/ + /w/ - realized phonetically as [əɨ]
<> AABC /aj/ =
/a/ + /j/
expected ꪼꪜ ‘to go’, ꪼꪏ ‘teacher’ ligature: short /a/ + /j/
<> AABD /an/ =
/a/ + /n/
common ꪋ꪿ꪽ ‘beautiful’, ꪙꪽ ‘loud’ ligature: short /a/ + /n/
<◌ꪾ> AABE AA9A /ap/ =
/a/ + /p/
common ꪝꪾꪚ ‘to fold’ short /a/ + /p/
<◌ꪾ> AABE /am/ =
/a/ + /m/
expected ꪜꪾ꫁ ‘to cut down’, ꪙꪾ꫁ ‘water’ ligature: short /a/ + /m/