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From text to speech: The MITalk system
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a. Assign 1-stress to the vowel three syllables to the left of a
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primary-stressed vowel occurring in the last syllable if the
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following syllable contains only a vowel (e.g. heliotrope —
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HH 'IY LL IY OW TT RR ‘OW PP -- the stress in the last
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syllable is later reduced).
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2.V > [1-stress] / X— COVCO[ l's{f,ess] Co
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a. Assign 1-stress to the vowel two syllables to the left of a
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primary-stressed vowel occurring in the last syllable (e.g.
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gelatinate—>JJ ’YEH LL ’'AE TT IH NN ‘EY TT -- the
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stress in the first syllable is later deleted; stress in the last
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syllable is later reduced).
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6.3.5 Destressing Rule (noncyclic)
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This rule is the first destressing phase wherein the selected stressed vowels are
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reduced in stress and tenseness. The action (— -stress) in the rules below in-
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dicates that the stress marking for the selected vowel is removed. In addition, if
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the destressed vowel is long, it is shortened as follows: EY — AE, IY — EH,
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AY — IH, OW — aA,or UW — UH (oY and aw are not modified).
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{r
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1.V = [stress] | Cover—c]| ® {}SS] Y
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where the rule may apply more than once per word.
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a. Shorten and destress any vowel not in the first syllable which
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is followed by a single consonant and a stressed vowel (e.g.
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instrumental > ’IH NN SS TT RR (’)UW MM 'EH NN TT
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AE LL -- the segment UW is reduced to UH, and later to Ax).
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2.V > [steess] / o 1T || s x
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where the rule may apply in addition to the previous rule.
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a. Destress a nonlong vowel in the first syllable which is fol-
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lowed by a single consonant and a stressed vowel (e.g.
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gelatinate—JJ (Y)EH LL YAE TT ‘IH NN 'EY TT).
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6.3.6 Compound Stress Rule (noncyclic)
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This rule, as developed by Halle, applies to both compounds and noncompounds.
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The assumption with letter-to-phonetic segment rules is that words are composed
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