Package nzilbb.encoding

Class IPA2DISC

  • All Implemented Interfaces:
    Function<String,​String>, UnaryOperator<String>
    public class IPA2DISC
extends PhonemeTranslator
    Translates IPA-encoded phonemic transcriptions using Unicode characters like tɹænskɹɪpʃən to CELEX-DISC-encoded transcriptions like tr{nskrIpS@n

    This should support straight round-trip conversion with IPA symbols used by DISC2IPA, but also recognise other IPA symbols like /ʤ/, and Montreal Forced Aligner symbols like /ej/, for conversion to DISC.

    Mapping

    1-to-1 mappings
    IPADISCExample
    a ↔ & hat(German)
    Nasals
    æ̃ ↔ c timbre
    ɑ̃ː ↔ q détente
    æ̃ː ↔ 0 lingerie
    ɒ̃ː ↔ ~ bouillon
    Possible linking r
    ɹ ↔ R father
    Syllabics
    ŋ̩ ↔ C bacon
    m̩ ↔ F idealism
    n̩ ↔ H burden
    l̩ ↔ P dangle
    ɹ ↔ r rat
    ɡ ↔ g game(this is LATIN SMALL LETTER SCRIPT G which is always straight-backed)
    Monophthongs
    ɜː ↔ 3 NURSE
    æ ↔ { TRAP
    ʉ ↔ } put(Dutch)
    ɔː ↔ $ THOUGHT
    ɪ ↔ I KIT
    ʏ ↔ Y Pfütze
    ʌ ↔ V STRUT
    ɒ ↔ Q LOT
    ɔ ↔ O Glocke(German)
    ʊ ↔ U FOOT
    ə ↔ @ another Schwa
    uː ↔ u GOOSE
    iː ↔ i FLEECE
    ɛ ↔ E DRESS
    ɑː ↔ # BATH
    ɑ ↔ A kalevala(German)
    yː ↔ y für(German)
    oː ↔ o boot(German)
    ɛː ↔ ) Käse(German)
    øː ↔ | Möbel(German)
    œ̃ː ↔ ^ Parfum(German)
    œ ↔ / Götter(German)
    Diphthongs
    eɪ ↔ 1 FACE
    aɪ ↔ 2 PRICE
    ɔɪ ↔ 4 CHOICE
    əʊ ↔ 5 GOAT
    aʊ ↔ 6 MOUTH
    ɪə ↔ 7 NEAR
    ɛə ↔ 8 SQUARE
    ʊə ↔ 9 CURE
    ai ↔ W weit(German)
    au ↔ B Haut(German)
    ɔy ↔ X freut(German)
    œy ↔ L huis(Dutch)
    Consonants
    ŋ ↔ N bang
    θ ↔ T thin
    ð ↔ D then
    ʃ ↔ S sheep
    ʒ ↔ Z measure
    pf ↔ + Pferd(German)
    Affricates
    d͜ʒ ↔ _ jeep
    t͜ʃ ↔ J cheap
    t͜s ↔ = Zahl(German)
    Extensions to DISC, not in CELEX
    ʔ ↔ ? uh-ohGlottal Stop
    Any other symbol is passed through unchanged, including:
    p ↔ p pat
    b ↔ b bad
    t ↔ t tack
    d ↔ d dad
    k ↔ k cad
    g ↔ g game
    l ↔ l lad
    m ↔ m mad
    n ↔ n nat
    f ↔ f fat
    v ↔ v vat
    s ↔ s sap
    z ↔ z zap
    j ↔ j yank
    h ↔ h had
    w ↔ w why
    x ↔ x loch
    Other mappings
    IPADISCExample
    Affricates
    ʤ → _ jeep(ligature)
    ʧ → J cheap(ligature)
    d͡ʒ → _ jeep(over-joined)
    t͡ʃ → J cheap(over-joined)
    Unicode's LATIN SMALL LETTER TURNED E instead of schwa
    ǝ → @ another
    ǝʊ → 5 MOUTH
    ɪǝ → 7 NEAR
    ɛǝ → 8 SQUARE
    ʊǝ → 9 CURE
    MFA phoneme labels
    aj → 2 PRICE
    aw → 6 MOUTH
    bʲ → bj attribute
    dʲ → dj duel
    dʒ → _ jeep
    ej → 1 FACE
    fʲ → fj fuel
    kʰ → k kangaroo
    mʲ → mj Munich
    pʰ → p Pacific
    pʲ → pj puberty
    tʰ → t table
    tʲ → tj tuition
    tʃ → J cheap
    vʲ → vj view
    ɐ → V understand
    ɒː → Q author
    ɔj → 4 CHOICE
    əw → 5 GOAT
    ɜ → 3 leisurely
    ɟ → g legume
    ɟʷ → g linguistics
    ɡ → g get
    ɫ → l milk
    ɫ̩ → P model
    ʉː → } ooze
    ʎ → j leak
    Author:
    Robert Fromont robert@fromont.net.nz
    See Also:
    DISC2IPA

    • Constructor Detail

      • IPA2DISC

        public IPA2DISC()
        Default constructor.

    • Method Detail

      • getDelimiter

        public String getDelimiter()
        Getter for delimiter: Delimiter between IPA phonemes, if any.
        Returns:
        Delimiter between IPA phonemes, if any.

      • setDelimiter

        public IPA2DISC setDelimiter​(String newDelimiter)
        Setter for delimiter: Delimiter between IPA phonemes, if any.
        Parameters:
        newDelimiter - Delimiter between IPA phonemes, if any.

      • apply

        public String apply​(String source)
        Translates a phonemic transcription from the source encoding to the destination encoding.
        Specified by:
        apply in interface Function<String,​String>
        Overrides:
        apply in class PhonemeTranslator
        Parameters:
        source - Phonemic transcription in the source encoding.
        Returns:
        Phonemic transcription in the destination encoding.