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From text to speech: The MITalk system
Soundl: Stripped C AR I B O U Stage I
Soundl: Consonants: KK 2?2 RR ?? BB ?? 2?2 Stage 2
Soundl: Prefixes : KK ?? RR ?? BB 2? 2?2
Soundl: Vowels : KK AE RR IH BB UW Stage 3
Soundl: Suffixes : KK AE RR IH BB UW
SOUND1l: KK 'AE RR - IX - BB UW
Figure 6-2: Application of letter-to-sound rules to caribou
general rule in its rule sequence and that b has only one given pronunciation. The
letter ¢, because it precedes a, is pronounced Kx.
When a precedes r which, in turn, precedes either a vowel or another r within
the same morph, it usually has the pronunciation aAt. The letter i, following its
most general pronunciation, is assigned the segment IH. Morph-final ou is given
the pronunciation UW.
6.2.4.1 Generalizations and related rules The letter r is syllabic if preceded by a
consonant other than r and followed by a morph-final e, e.g., acre, or the inflec-
tional suffixes s or ed.
The letter ¢ is palatalized in some cases, as in special (preceded by a vowel;
followed by the letter i and a vowel) and ancient (preceded by the letter n; fol-
lowed by i-vowel). It is assigned the segment ss later in its rule sequence if it is
followed by e, i, or y. It may be noted that this is the same context which assigns
the pronunciation IH ss to the suffix ic. If c is followed by a, o, or u, it is usually
pronounced KK, as in this example.
When a precedes r, and r is not followed by either a vowel or another r
within the same morph, a is pronounced Aa (e.g. far, cartoon) unless preceded by
the segment ww (e.g. warble, warp, war, wharf, quarter).
In a word such as macaroon, the a preceding r-vowel is assigned pronuncia-
tion AE in the phonological rules and is reduced to schwa in the stress rules be-
cause it is unstressed.
6.2.4.2 Second example
Soundl: Stripped : S U B < V E R § > I O N
Stage 1
Soundl: Consonants: 2?2 2?2 2?2 2?2 VW 2?22 RR ZH ?? 2?2 2?2 27
Stage 2
Soundl: Prefixes { SS AX VV 2?2 RR ZH ?? 2?2 2?22 22
Soundl: Vowels : SS AX
Stage 3
Soundl: Suffixes : SS AX < VV AH RR ZH > AX NN
SOUND1l: SS "AX BB * - VV 'AH RR ZH * - AX NN
BB <
BB < VV AH RR ZH ?? 2?2 22?2 2?2
BB
Figure 6-3: Application of letter-to-sound rules to subversion
In Figure 6-3, the affixes ion and sub are recognized in Stage 1.
There is only one pronunciation provided for the consonant v; and r, because
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