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O codificador GSM a 13Kbits/s
Francisco Vaz; António J. S. TeixeiraThe objective of this paper is to introduce the structure of a coder used widely on the european mobile phone system GSM. First is presented the general principles to code human speech for transmission over telephone networks by introducing the main signal processing tools used, specially adressing linear prediction. After, the structure of the GSM 6.10 coder and decoder, is presented describing each of their p...
Natural Language Generation in the context of Multimodal Interaction in Portugu...
José Casimiro Pereira; António J. S. Teixeira; Joaquim Sousa PintoIn many situations, systems and people have to interact and share information. With demographic ageing a group of users that deserves special attention are the olderadults. Multimodal interaction aims to improve the interaction between human users and electronic devices. A key technology for the output part of a Multimodal system isconversion of the concepts handled by systems into readable text or audible spee...
A Talking Face for Portuguese
Raquel de Castro Lisboa; António J. S. Teixeira; Artur Pimenta AlvesCombination of speech output with animated agents, complete or represented by face alone, has many applications, including in telecommunications. Aiming at contributing to the availability of such technologies for our language, this paper presents the development of the necessary building blocks to have a talking face for Portuguese. Work focused on the adaptation of an available&n...
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