Package nzilbb.encoding

Class DISC2HTK

java.lang.Object

nzilbb.encoding.PhonemeTranslator

nzilbb.encoding.DISC2HTK

All Implemented Interfaces:

Function<String,String>, UnaryOperator<String>

public class DISC2HTK
extends PhonemeTranslator

Translates CELEX-DISC-encoded transcriptions like tr{nskrIpS@n to a form that would word for a Hidden Markov Model Toolkit (HTK) .dict file, like: t r _{ n s k r I p S _@ n.

The phonemes are space-delimited, and labels that don't start with an alphabetic character are prefixed with '_' to avoid HTK processing errors.

This translator will also handle input that is IPA-encoded, e.g. ˈmʌt.n̩.ˌt͡ʃɔps to a form that would word for a Hidden Markov Model Toolkit (HTK) .dict file, like: m _ʌ t n̩ t͡ʃ _ɔ p s.

Mapping

Source		Destination	Example

Author:

Robert Fromont robert@fromont.net.nz

See Also:

HTK2DISC

Constructor Summary

Constructors

Constructor	Description
DISC2HTK()	Default constructor.

Method Summary

Modifier and Type	Method	Description
String	apply(String source)	Translates a phonemic transcription from the source encoding to the destination encoding.
static boolean	IsIPADiacritic(char c)	Determines whether the given character is a known diacritic in IPA.
static boolean	IsIPASuprasegmental(char c)	Determines whether the given character is a known suprasegmental in IPA.

Methods inherited from class nzilbb.encoding.PhonemeTranslator

getDestinationEncoding, getSourceEncoding

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.function.Function

andThen, compose

Constructor Detail

DISC2HTK

public DISC2HTK()

Default constructor.

Method Detail

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.

IsIPADiacritic

public static boolean IsIPADiacritic(char c)

Determines whether the given character is a known diacritic in IPA.

Diacritics include:

̩

syllabic

̍

syllabic

̯

non-syllabic

̑

non-syllabic

ʰ

aspirated

ⁿ

nasal release

̚

no audible release

ˡ

lateral release

ᶿ

Voiceless dental fricative release

ˣ

Voiceless velar fricative release

ᵊ

Mid central vowel release

̥

voiceless

̊

voiceless

̤

breathy voiced

̬

voiced

̰

creaky-voiced

̪

dental

̼

linguolanbial

̻

laminal

̺

apical

̟

advanced

˖

advanced

̠

retracted

˗

retracted

̽

mid-centralized

̝

raised

˔

raised

̞

lowered

˕

lowered

̹

more rounded

̜

less rounded

ʷ

labialized

ʲ

palatalized

ᶣ

labio palatalized

ᶹ

Labialized without protrusion of the lips or velarization

ˠ

velarized

ˤ

Pharyngealized

̘

advanced tongue root

̙

retracted tongue root

̃

nasalized

ː

long

ˑ

half long

̆

extra short

Parameters:

c - The character.

Returns:

true if c is a diacritic, false otherwise

IsIPASuprasegmental

public static boolean IsIPASuprasegmental(char c)

Determines whether the given character is a known suprasegmental in IPA.

Suprasegmentals include:

ˈ

primary stress

ˌ

secondary

‿

linking

.

syllable boundary

Parameters:

c - The character.

Returns:

true if c is a diacritic, false otherwise