github-jinwei / arpa2ipa

A converter from Arpabet to IPA (see https://en.wikipedia.org/wiki/Arpabet)

arpa2ipa

A converter from Arpabet to IPA.

This explanation is taken from https://en.wikipedia.org/wiki/Arpabet :

In Arpabet, every phoneme is represented by one or two capital letters. Digits are used as stress indicators and are placed at the end of the stressed syllabic vowel. Punctuation marks are used like in the written language, to represent intonation changes at the end of clauses and sentences. The stress values are:

Value	Description
0	No stress
1	Primary stress
2	Seconary stress

Vowels:

• Monophthongs

Arpabet	IPA	Word examples
AO	ɔ	off (AO1 F); fall (F AO1 L); frost (F R AO1 S T)
AA	ɑ	father (F AA1 DH ER), cot (K AA1 T)
IY	i	bee (B IY1); she (SH IY1)
UW	u	you (Y UW1); new (N UW1); food (F UW1 D)
EH	ɛ	red (R EH1 D); men (M EH1 N) (modern versions use e)
IH	ɪ	big (B IH1 G); win (W IH1 N)
UH	ʊ	should (SH UH1 D), could (K UH1 D)
AH	ʌ	but (B AH1 T), sun (S AH1 N)
AH(0)	ə	sofa (S OW1 F AH0), alone (AH0 L OW1 N)
AX	ə	discus (D IH1 S K AX0 S);
AE	æ	at (AE1 T); fast (F AE1 S T)

• Dipthongs

Arpabet	IPA	Word Examples
EY	eɪ	say (S EY1); eight (EY1 T)
AY	aɪ	my (M AY1); why (W AY1); ride (R AY1 D)
OW	oʊ	show (SH OW1); coat (K OW1 T)
AW	a	how (HH AW1); now (N AW1)
OY	ɔɪ	boy (B OY1); toy (T OY1)

• R-colored vowels

Arpabet	IPA	Word Examples
ER	ɝ	her (HH ER0); bird (B ER1 D); hurt (HH ER1 T), nurse (N ER1 S)
AXR	ɚ	father (F AA1 DH AXR); coward (K AW1 AXR D)
EH R	ɛr	air (EH1 R); where (W EH1 R); hair (HH EH1 R)
UH R	ʊr	cure (K Y UH1 R); bureau (B Y UH1 R OW0), detour (D IH0 T UH1 R)
AO R	ɔr	more (M AO1 R); bored (B AO1 R D); chord (K AO1 R D)
AA R	ɑr	large (L AA1 R JH); hard (HH AA1 R D)
IH R or IY R	ɪr	ear (IY1 R); near (N IH1 R)
AW R	aʊr	This seems to be a rarely used r-controlled vowel. In some dialects flower (F L AW1 R; in other dialects F L AW1 ER0)

Consonants

• Stops

Arpabet	IPA	Word Examples
P	p	pay (P EY1)
B	b	buy (B AY1)
T	t	take (T EY1 K)
D	d	day (D EY1)
K	k	key (K IY1)
G	ɡ	go (G OW1)

• Affricates

Arpabet	IPA	Word Examples
CH	tʃ	chair (CH EH1 R)
JH	dʒ	just (JH AH1 S T); gym (JH IH1 M)

• Fricatives

Arpabet	IPA	Word Examples
F	f	for (F AO1 R)
V	v	very (V EH1 R IY0)
TH	θ	thanks (TH AE1 NG K S); Thursday (TH ER1 Z D EY2)
DH	ð	that (DH AE1 T); the (DH AH0); them (DH EH1 M)
S	s	say (S EY1)
Z	z	zoo (Z UW1)
SH	ʃ	show (SH OW1)
ZH	ʒ	measure (M EH1 ZH ER0); pleasure (P L EH1 ZH ER)
HH	h	house (HH AW1 S)

• Nasals

Arpabet	IPA	Word Examples
M	m	man (M AE1 N)
EM	m̩	keep 'em (K IY1 P EM)
N	n	no (N OW1)
EN	n̩	button (B AH1 T EN)
NG	ŋ	sing (S IH1 NG)
ENG	ŋ̍	Washington (W AO1 SH ENG T EN)

• Liquids

Arpabet	IPA	Word Examples
L	l or ɫ	late (L EY1 T); fail (F EY1 L)
EL	ɫ̩	bottle (B AO1 DX EL)
R	r or ɹ	run (R AH1 N)
DX	ɾ	wetter (W EH1 DX AXR)
NX	ɾ̃	wintergreen (W IY2 NX AXR G R IY1 N)

• Semivowels

Arpabet	IPA	Word Examples
Y	j	yes (Y EH1 S)
W	w	way (W EY1)
Q	ʔ (glottal stop)	uh-oh (Q AH1 Q OW) (ʔʌʔoʊ)
(missing)	hw or ʍ	"when" etc. in some dialects