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The problem is,
that the locations of accents (I.e. the position of prominent syllables)
isn’t associated with any particular local shape of F0. These are data from the IViE corpus (Grabe
and company, Oxford, circa 2002).
They are local fits of polynomials to prominent (red) syllables and
non-prominent places (randomly chosen between the prominent syllables). As can be seen, the prominent and
non-prominent syllables have essentially the same F0, slope, and
curvature. Thus, a Tilt-model
analysis of speech will not be able to find prominent syllables by looking
for bumps.
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