Electrical computers and digital processing systems: multicomput – Distributed data processing – Client/server
Reexamination Certificate
1997-04-30
2008-05-27
Dinh, Khanh (Department: 2151)
Electrical computers and digital processing systems: multicomput
Distributed data processing
Client/server
C709S224000, C709S227000, C348S014090, C370S902000
Reexamination Certificate
active
07379961
ABSTRACT:
A system and method for enabling an audio conference server (ACS) to provide an application program with multi-point weight controllable audio conferencing. The ACS manages a plurality of audio conferences, receives audio data from a plurality of audio clients, mixes the audio data to provide distance-based attenuation according to decay characteristics for each sound, and delivers the mixed audio data to a plurality of audio clients. Audio clients include set-top box (STB) audio clients and point source audio (PSA) audio clients. The ACS mixes the audio data by identifying a decay factor. Pre-defined decay factors include an audio big decay factor, an audio small decay factor, an audio medium decay factor, and a constant decay factor. One can also develop a customized decay factor. A weighted value for a source audio client based on the identified decay factor and the distance between the source audio client and a target audio client is determined. A mix table is generated using the weighted values for each source/target audio client pair. Then an actual mix value for each target audio client is calculated using the mix table. The present invention also includes means for refining the actual mix value.
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Dinh Khanh
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