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Pseudo Hangover Synthesis Disclosure Number: IPCOM000041721D
Original Publication Date: 1984-Mar-01
Included in the Prior Art Database: 2005-Feb-02

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Daugan, G Noailly, P Wiest, S [+details]


In a digital voice network wherein N conversations are to be transmitted over C equivalent channels (N>C), the channel assignments are based on voice activity detection. The channels are assigned to active sources only. In other words, silences are not transmitted. However, it is difficult to detect the end of a talk-spurt, because the voice activity does not stop instantaneously. To provide smooth restitution, the voice sources are still considered active after each talk-spurt during a "hangover" time. Such hangovers do, however, increase the load of the network. A solution is proposed here to minimize the hangover load by not transmitting any voice signal during the hangovers and substituting for it a pseudo hangover voice signal generated at the receiving end of the network.