Título: Tlingit language
Seção: Vowels
Background: The Tlingit language (English: , ; Tlingit: Lingit [linkit]) is spoken by the Tlingit people of Southeast Alaska and Western Canada. It is a branch of the Na-Dene language family. Extensive effort is being put into revitalization programs in Southeast Alaska to revive and preserve the Tlingit language and culture. Missionaries of the Russian Orthodox Church were the first to develop a written version of Tlingit, using the Cyrillic script to record and translate it, when the Russian Empire had contact with Alaska and the coast of North America down to Sonoma County, California.

Conteúdo: Tlingit has eight vowels, four vowels further distinguished formally by length. However, the length distinction is often in terms of tenseness rather than length, particularly in rapid speech. For the Northern dialect, the dominant spoken dialect of Tlingit and the standard for written Tlingit, every vowel may take either high or low tone; in the orthography high tone is indicated by an acute accent, e.g. aa, and low tone is unmarked, e.g. aa. The Southern and Transitional dialects have a mid tone which is unmarked and additional low tone which is marked by a grave accent, e.g. aa.  As noted in the vowel chart above, there is an allophone of /a:/ (orthographic aa) which is realized as [a:] under the influence of uvular consonants, however this is not consistent for all speakers. The backness influence arises from articulation with uvular consonants, thus the word khaa "person" is often spoken as [qha:], whereas the word (a) kaa "on (its) surface" is said as [(?^) kha:] by the same speakers.  Word onset is always consonantal in Tlingit, i.e. no word may begin with a vowel. Where one would occur theoretically by e.g. prefixing or compounding, the vowel is obligatorily preceded by either [?] or [j]. The former is universal in single words, and the latter is found varying with [?] in word-medial position in compounds. The orthography does not reflect the [?] in word-initial position, but either . or y may be seen in medial position. For example, the word khoowat'aa "the weather i

user: what are vowels?

assistant: Tlingit has eight vowels,

user: Are there any other interesting aspects about this article?

assistant: four vowels further distinguished formally by length. However, the length distinction is often in terms of tenseness rather than length, particularly in rapid speech.

user: what is not a vowel?

assistant: The Southern and Transitional dialects have a mid tone which is unmarked and additional low tone which is marked by a grave accent,

user: anything else interesting/

assistant: As noted in the vowel chart above, there is an allophone of /a:/ (orthographic aa) which is realized as [a:] under the influence of uvular consonants,

user: what are uvular consonants?

assistant: thus the word khaa "person" is often spoken as [qha:], whereas the word (a) kaa "on (its) surface" is said as [(?^) kha:] by the same speakers.

user: what is the difference?

assistant: not consistent for all speakers. The backness influence arises from articulation

user: what is articulation?

assistant: Word onset is always consonantal in Tlingit, i.e. no word may begin with a vowel.

user: why can't they begin with a vowel?

assistant: Where one would occur theoretically by e.g. prefixing or compounding, the vowel is obligatorily preceded by either [?] or [j].

user: anything else interesting in the article?

assistant: speech. For the Northern dialect, the dominant spoken dialect of Tlingit and the standard for written Tlingit, every vowel may take either high or low tone;