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52 lines
1.8 KiB
52 lines
1.8 KiB
The prosodic component
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value obtained from the previous applicable rules by an amount PRCNT]1, accord-
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ing to the equation:
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PRCNT=(PRCNTXPRCNT1)/100 )
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The duration of the segment is then computed by inserting the final value for
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PRCNT into Equation 1; and, finally, Rule 11 is applied. Justification for the
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presence of each rule is given in the references cited below, but the detailed for-
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mulation of a rule involved considerable trial-and-error effort to match the rule
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output against a large body of hand-segmented and labeled spectrograms of
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paragraphs read by speaker DHK.
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1. Pause insertion rule:
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Insert a 200-msec pause before each sentence-internal main clause and at
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boundaries delimited by a syntactic comma, but not before relative
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clauses (Goldman-Eisler, 1968; Cooper et al., 1978). The “(R” symbol
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functions like a “)N” in the duration rules.
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2. Clause-final lengthening:
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The vowel or syllabié consonant in the syllable just before a pause is
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lengthened by PRCNT1=140 (Gaitenby, 1965; Lindblom and Rapp,
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1973). Any consonants between this vowel and the pause are also
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lengthened by PRCNT1=140 (Oller, 1973; Klatt, 1975).
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3. Non-phrase-final shortening:
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Syllabic segments (vowels and syllabic consonants) are shortened by
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PRCNT1=60 if not in a phrase-final syllable (Lindblom and Rapp, 1973;
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Klatt, 1975). A phrase-final postvocalic liquid or nasal is lengthened by
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PRCNT1=140.
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4, Non-word-final shortening:
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Syllabic segments are shortened by PRCNT1=85 if not in a word-final
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syllable (Lindblom and Rapp, 1973; Oller, 1973).
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3. Polysyllabic shortening:
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Syllabic segments in a polysyllabic word are shortened by PRCNT1=80
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(Lindblom and Rapp, 1973; Lehiste, 1975a).
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6. Non-initial-consonant shortening:
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Consonants in non-word-initial position are shortened by PRCNT1=85
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(Klatt, 1974; Umeda, 1977).
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95
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