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Context-dependent rules for PHONET
C.4 Initialization
J—
Set manner class according to segment class:
Manner « vowel / [ +v:)_we1]
ELSE Manner « stop / [ +.s—t_<_>p]
ELSE Manner « fricative / [ +frififi"e]
ELSE Manner « sonorant
Set amplitude, frequency, and bandwidth targets from Tables C-1 and C-2.
The segments HH and X inherit frequency targets from the next segment.
Target[fnz] « 250 /—
Target[an] <« 0 /—
Set Tcf from Table C-3.
Buramp « 57 /—
Aspamp « 51 /—
Default transition type is SETSMO.
Set transition boundary value target Bper from Table C-4.
C.5 General rules
J—
Bper[f0] « 75
Suppress amplitude smoothing after plosive:
Mintime[af] < Cumdur(af] / [ *PI%Si"e]—
Discontinuous transition out of unvoiced segment:
Trantype(f0, av] « DISSMO / [ "'°§°°d]—-
Mintime[f0] « Cumdur{f0] / [ “°§°ed]—-
Do a breathy offset into a pause:
Aspdux <« 30, Oldval[avc] T 6, Aspam1 « Aspamp / [ -SSIL] [ +EL]
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