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Modelling hesitation for synthesis of spontaneous speech.pdf

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Modelling Hesitation for Synthesis of Spontaneous Speech 1 1,2 3 Rolf Carlson , Kjell Gustafson and Eva Strangert * 1CSC, Department of Speech, Music and Hearing, KTH, Stockholm, Sweden {rolf;kjellg}@speech.kth.se 2Acapela Group Sweden AB, Solna, Sweden 3Department of Philosophy and Linguistics, Phonetics, Umeå University, Sweden strangert@ling.umu.se *Names in alphabetical order With a few exceptions, relatively little effort has so far Abstract been spent on research on spontaneous speech synthesis with The current work deals with the modelling of one type of dis- a focus on disfluencies. The introduction of the VoiceFont [2] fluency, hesitations. A perceptual experiment using speech pointed to the need to include extralinguistic features of this synthesis was designed to evaluate two duration features type in speech synthesis. Methods based on unit selection can found to be correlates to hesitation, pause duration and final naturally include some of the hesitation features present in lengthening. A variation of F0 slope before the hesitation was spontaneous speech but this is mostly by accident. In recent also included. The most important finding is that it is the
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