System and method for voice transmission over network protocols

Details System and method for voice transmission over network protocols System and method for voice transmission over network protocols

H - Electricity

04

L

H04L 29/06 (2006.01) G10L 11/02 (2006.01) H04L 12/66 (2006.01) H04M 7/00 (2006.01) H04L 29/08 (2006.01)

Patent

CA 2388848

A system and method for voice transmission over high level network protocols. On the Internet and the World Wide Web, such high level protocols are HTTP/TCP. The restrictions imposed by firewalls and proxy servers are avoided by using HTTP level connections to transmit voice data. In addition, packet delivery guarantees are obtained by using TCP instead of UDP. Variable compression based on silence detection takes advantage of the natural silences and pauses inhuman speech, thus reducing the delays in transmission caused by using HTTP/TCE The silence detection includes the ability to bookend the voice data sent with small portions of silence to insure that the voice sounds natural. Finally, the voice data is transmitted to each client computer independently from a common circular list of voice data, thus insuring that all clients will stay current with the most recent voice data. The combination of these features enables simple, seamless, and interactive Internet conferencing.

L'invention concerne un système et un procédé de transmission de données vocales sur des protocoles de réseau de niveau élevé, tels que l'Internet et le Web dont les protocoles de niveau élevé sont HTTP/TCP. On évite les restrictions imposées par les coupe-feu et les serveurs mandataires en utilisant des connexions de niveau HTTP pour transmettre des données vocales. En outre, l'utilisation de TCP au lieu de UDP permet de garantir la distribution des paquets. Une compression variable basée sur la détection de silences tire profit des silences et des pauses naturels dans la parole, ce qui réduit les retards de transmission provoqués par l'utilisation de HTTP/TCP. La détection de silences offre la possibilité de prendre les données vocales en sandwich entre des petites parties de silence de sorte que la voix semble naturelle. Enfin, les données vocales sont transmises à chaque ordinateur de client indépendamment d'une liste de données vocales circulaire commune, ce qui garantit que tous les clients reçoivent les données vocales actualisées. La combinaison de ces caractéristiques offre un système de téléconférence simple, cohérent, et interactif sur l'Internet.

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