eSpeak NG is an open source speech synthesizer that supports more than hundred languages and accents.
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

en.md 3.0KB

English


The English language support uses a vowel system based on John Wells’ Lexical Sets[1]. These were created by Wells in 1982 by comparing the Received Pronunciation British (RP) and General American (GenAm) accents in use at that time.

The en transcriptions listed below are the phonemes used by eSpeak NG to transcribe the different lexical sets.

Short Vowels

Lexical Set en RP GenAm
KIT I ɪ ɪ
DRESS E e ɛ
TRAP a æ æ
LOT 0 ɒ ɑ
STRUT V ʌ ʌ
FOOT U ʊ ʊ

Long Vowels

Lexical Set en RP GenAm
FLEECE i: i
PALM A: ɑː ɑ
THOUGHT O: ɔː ɔ
GOOSE u: u

Rhotic Vowels

These are vowels that are followed by an r that is not part of the next syllable when considering the root form of the word containing that vowel.

Lexical Set en RP GenAm
NURSE 3: ɜː ɝ
START A@ ɑː ɑɹ
NORTH O@ ɔː ɔɹ
FORCE o@ ɔː
CURE U@ ʊə̯ ʊɹ
NEAR i@3 ɪə̯ ɪɹ
SQUARE e@ eə̯ ɛɹ

NOTE: /i@3/ is used for the NEAR lexical set to differentiate it from /i@/ used in words like million.

Reduced Vowels

These are unstressed vowels that differ from the vowels in the main lexical sets.

Lexical Set en RP GenAm
HAPPY i ɪ i
COMMA @ ə ə
LETTER 3 ə ɚ

Diphthongs

Lexical Set en RP GenAm
FACE eI eɪ̯ eɪ̯
PRICE aI aɪ̯ aɪ̯
CHOICE OI ɔɪ̯ ɔɪ̯
GOAT oU əʊ̯ oʊ̯
MOUTH aU aʊ̯ aʊ̯

Split Vowels

These are lexical sets defined by John Wells that are merged with other lexical sets in both RP and GenAm, so have split from one of those lexical sets and merged with the other.

Lexical Set en RP GenAm
BATH aa ɑː æ
CLOTH O2 ɒ ɔ

References

  1. Wikipedia. Lexical set. 2017. Creative Commons Attribution-Sharealike 3.0 Unported License (CC-BY-SA).