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A simplified approximation of the four-parameter, voice source model developed by Fant et al. [STL-QPSR 4, 1–12 (1985)] is described in this Letter. In our approximation, the computational complexity required to implement the four-parameter model is simplified without reducing model accuracy. The simplified approximation accommodates rapid, on-line adjustment of source parameters during speech synthesis.
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Qi et al. (1994) studied this question.
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