Thomas Portele

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The structure of a synthesis system is described that uses prominence as a central parameter. A definition of prominence suitable for this application is given. For the empirical foundation the reliability of prominence ratings by human listeners is assessed. These ratings were compared with acoustic data on F, and duration. A linear relationship between(More)
1.2 Resynthesis A preliminary test exploring 4 emotions showed that conveying emotions by time domain synthesis may be possible. Therefore, a more sophisticated test was carried out in order to determine the influence of the prosodic parameters in the perception of a speaker's emotional state. Six different emotional states were investigated. The stimuli of(More)
Control of prosody is essential for the synthesis of natural sounding speech. Text-to-speech systems tend to accent too many words when taking into account only the distinction between open-class and closed-class words. In the prominence-based approach [1], the degree of accentuation of a syllable is described in terms of a gradual prominence parameter.(More)
Verbmobil is a speaker-independent system that offers translation assistance in dialogue situations. In co-operation with other institutes we are developing the speech synthesis module within Verbmobil for German and American English. Current priority is given to an enhancement of naturalness of our PSOLA based concatenative synthesis of German. Due to a(More)
The paper shows the effects of combining a stochastic grammar with a word bigram language model by log-linear interpolation. It is divided into three main parts: The first part derives the stochastic grammar model and gives a sound theoretical motivation to incorporate word dependencies such as bigrams. The second part describes two different algorithmic(More)
This paper describes the SmartKom-Home system realized within the SmartKom project. It assists the user by means of a multi-modal dialogue system in the home environment. This involves the control of various devices and the access to services. SmartKom-Home is supposed to serve as a uniform interface to all these devices and services so the user is freed(More)
A natural language generation module for spoken dialogue systems has been developed that performs three steps: generating multiple versions of an utterance, choosing the best version by a set of criteria, and annotating the text using structural information accumulated during the generation process. The requirements of spoken output is catered for by(More)