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From text to speech: The MITalk system
Tcenter[f3] « Tcenter[f3] * .3/ [T]
Tcenter[f3] « Tcenter[f3] * .6/ { [+E).(_R] / [ +ER] }
Bvalb[fl..f3] « Bvalf[fl..f3]
Temporarily replace Target[f1.£f3] with Diptar[fl.f3] and move
Cumdur(f1..f3] to Cumdur[f1..f3] + Tcenter[f]..f3], then draw a transition (see
Figure C-2).
+— Tedips —l— Tedips —
Target Diptar
N
Mintime Cumdur Cumdur+Tcenter Cumdur+Segdur
Figure C-2: Diphthong transition smoothing
Table C-5: Diphthong transition parameters
Tcdiph Tdmid Tcdiph Tdmid Tcdiph Tdmid
AA 0 80 AE 100 75 AH 0 0
A0 110 80 AW 120 70 AXR 125 40
AY 100 55 EH 60 70 ER 180 50
EXR 100 50 EY 140 55 IH 90 65
IXR 100 50 IY 200 45 OW 150 50
OXR 110 60 oY 150 60 UH 90 65
UwW 140 55 UXR 150 50 YU 100 45
C.8 Obstruents
/[ -sonor, +nasal
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