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In 1992 Sun Microsystems Laboratories (SMLI), the research arm of Sun Microsystems, was doing experiments in computer coordinated cooperative work (CoCo), including workstation-based video conferencing and whiteboarding. We had responsibility for initial research and experiments in acoustic echo cancellation for the audio element of conferencing. We developed and tested methods based on adaptive filtering, evaluated their feasability on the available platforms, and provided Sun with the research notebook on which ultimate implementations in the ShowMe Whiteboard product were based.
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