Optimization Modeling of Speech Timing
نویسندگان
چکیده
We present a novel paradigm for the computational modeling of speech timing. Our approach is based on two core assumptions: (1) the organization of speech is governed by the resolution of trade-offs between production and perception demands, and (2) isochrony at the syllable and stress group level, while not measurable in absolute terms in the speech signal, is present in a language-specific manner as an underlying tendency. These assumptions are implemented as an optimization procedure, minimizing a composite cost function whose components relate to durations of various prosodic constituents. The theoretical idea that much of the variation in speech can be explained as emerging from trade-offs between minimizing effort and maximizing perceptual clarity has been advocated most prominently by [2]. A recent computational implementation of this idea shows that various temporal coordination phenomena at the level of articulatory gestures can be accounted for on these grounds [3].
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تاریخ انتشار 2011