Gerasimos Xydas

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The acoustic representation of complex visual structures involves both synthesized speech and non-speech audio signals. Though progress in speech synthesis allows the consistent control of an abundance of parameters, like prosody through appropriate markup , there is not enough experimentally proven specification input data to drive a Voice Browser for such(More)
Text documents usually embody visually oriented meta-information in the form of complex visual structures, such as tables. The semantics involved in such objects result in poor and ambiguous text-to-speech synthesis. Although most speech synthesis frameworks allow the consistent control of an abundance of parameters, such as prosodic cues, through(More)
The prosodic specification of an utterance to be spoken by a Text-to-Speech synthesis system can be devised in break indices, pitch accents and boundary tones. In particular, the identification of break indices formulates the intonational phrase breaks that affect all the forthcoming prosody-related procedures. In the present paper we use tree-structured(More)
The auditory formation of visual-oriented documents is a process that enables the delivery of a more representative acoustic image of documents via speech interfaces. We have set up an experimental environment for conducting a series of complex psycho-acoustic experiments to evaluate users' performance in recognizing synthesized auditory components that(More)
Electronic texts carry important meta-information (such as tags in HTML) that most of the current Text-to-Speech (TtS) systems ignore during the production of the speech. We propose an approach to exploit this meta-information in order to achieve a detailed auditory representation of an e-text. The e-Text to Speech and Audio (e-TSA) Composer has been(More)
Emerging electronic text formats include hierarchical structure and visualization related information that current Text-to-Speech (TtS) systems ignore. In this paper we present a novel approach for composing detailed auditory representation of e-texts using speech and audio. Furthermore, we provide a scripting language (CAD scripts) for defining specific(More)
Transferring a structure from the visual modality to the aural one presents a difficult challenge. In this work we are experimenting with prosody modeling for the synthesized speech representation of tabulated structures. This is achieved by analyzing naturally spoken descriptions of data tables and a following feedback by blind and sighted users. The(More)
A significant challenge in Text-to-Speech (TtS) synthesis is the formulation of the prosodic structures (phrase breaks, pitch accents, phrase accents and boundary tones) of utterances. The prediction of these elements robustly relies on the accuracy and the quality of error-prone linguistic procedures, such as the identification of the part-of-speech and(More)
SUMMARY Synthetic speech usually suffers from bad F0 contour surface. The prediction of the underlying pitch targets robustly relies on the quality of the predicted prosodic structures, i.e. the corresponding sequences of tones and breaks. In the present work, we have utilized a linguistically enriched annotated corpus to build data-driven models for(More)