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Gesture-Based interfaces offer an alternative to traditional keyboard, menu, and direct manipulation interfaces. The ability to specify objects, an operation, and additional parameters with a single intuitive gesture appeals to both novice and experienced users. Unfortunately, gesture-based interfaces have not been extensively researched, partly because(More)
Tactus addresses problems of synchronizing and controlling various interactive continuous-time media. The Tactus system consists of two main parts. The first is a server that synchronizes the presentation of multiple media, including audio, video, graphics, and MIDI at a workstation. The second is a set of extensions to a graphical user interface toolkit to(More)
Traditional software synthesis systems, such as Music V, utilize an instance model of computation in which each note instantiates a new copy of an instrument. An alternative is the resource model, exemplified by MIDI ''mono mode'', in which multiple updates can modify a sound continuously, and where multiple notes share a single instrument. We have(More)
The views and conclusions contained in this document are those of the author and should not be interpreted as representing the official policies, either expressed or implied, of any of the sponsoring agencies or of the United States Government. To my mother and father. Abstract There is a great need for computer systems that remain available with high(More)