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Context-dependent rules for PHONET
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Aspiration starts during plosive burst:
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Cumdur{asp,av,bl] T Bufdur[X] -5,
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Aspdur T Burdur{X] - 5 / [ +P1ggi"e]__
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Aspiration duration is longer if fricative followed by a sonorant consonant:
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Aspdur « 10 / [ +fri(§1tive] [ +V0—\Nel]
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Aspdur < Segdurfaspl/2/ [ +fn'c§1tive] [ -viavel]
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Draw aspiration segment:
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Aspdur « min(Aspdur, Segdur[asp], segdur[av])
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+alveolar +retro
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Aspaml T 9/ [ S ] [
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If Aspdur is now nonzero, then draw an aspiration segment with duration
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Aspdur starting at time Cumdur{asp] where the values of asp, av, avc, and bl are
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Aspaml, 0, 0, and 150, respectively. Shift Cumdur forward by Aspdur for these
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four parameters. If the previous segment is a fricative, then smooth asp backward
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over the 30 msec interval before Cumdur[asp].
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C.6.2 Nonnasal sonorants
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/[ -v?_vi/el]
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F2 and f3 coarticulate with next vowel targets in RR and LL:
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Target[av] {3/ [ "_'_If]
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Target[f2] « .9*Target[f2] + .1*TARGET[f2, X]/
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[ +LL] [ +sonorant, -nasal]
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—_ X
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Coart(75), Target[f3] « Target[f2]+250 / [ ’f*_R]
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Target[f2] « .75*Target[f2] + .25*TARGETI(f2, X] /
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[ +RR] [ +sonora§t, -nasal
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Coarticulate with schwa if next segment is nonsonorant or nasal:
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