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Comparison of ASCII encodings of the International Phonetic Alphabet

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The International Phonetic Alphabet (IPA) consists of more than 100 letters and diacritics. Before Unicode became widely available, several ASCII-based encoding systems of the IPA were proposed. The alphabet went through a large revision at the Kiel Convention of 1989, and the vowel symbols again in 1993.[1] Systems devised before these revisions inevitably lack support for the additions they introduced.

Only language-neutral systems are discussed below because language-dependent ones (such as ARPABET) do not allow for a systematic comparison.

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General information

More information System, Author(s) ...
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Symbols

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Only the symbols in the latest IPA chart are included. The numbers in the leftmost column, according to which the symbols are sorted, are the IPA Numbers. Some of the IPA symbols to which a system lacks a corresponding symbol may still be represented in that system by use of a modifier (diacritic), but such combinations are not included unless the documentation explicitly assigns one for the value.

More information #, IPA ...
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Coverage

More information Scope, Branner ...

See also

Notes

  1. In Worldbet, these combinations are given as merely proposed for values "for which no machine-readable coding has yet been proposed".
  2. The uvular approximant is represented by R in PHONASCII.
  3. L represents either a voiceless alveolar lateral fricative, a velar approximant, or a velarized alveolar lateral approximant in the Usenet IPA/ASCII transcription.
  4. c! represents either an alveolar or palatal click in the Usenet IPA/ASCII transcription.
  5. - represents either retracted or "velarized or pharyngealized" in Millar & Oasa's system.
  6. ¿ and ¡ are not part of ASCII, but are nonetheless proposed as encoding advanced and retracted tongue root, respectively, in Worldbet.
  7. . represents either raised or palatalized in Millar & Oasa's system.
  8. * represents either non-syllabic or extra-short in Millar & Oasa's system.
  9. )) representing a tie bar is placed after both segments, as in ts)), in Branner's system.
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References

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