Video display of stored text is accompanied by associated speech from a speech synthesizer using coded sounds and intonation. A central processor controls selection of text and speech. Speech is selectable in one of a plurality of prestored languages coded in frequency and duration data....http://www.google.fr/patents/US4700322?utm_source=gb-gplus-shareBrevet US4700322 - General technique to add multi-lingual speech to videotex systems, at a low data rate
General technique to add multi-lingual speech to videotex systems, at a low ...