Ole Martin Bjørndalen
Department of Computer Science
University of Tromsø
Advisor: Otto J. Anshus
December 9, 2002
This report presents a simple sketchpad for layered recording of music. Mu- sicians often need to record or try out ideas, but existing systems can be too complex. The system was implemented at user level in C and Python and tested on Linux and Windows XP. The recording is kept in RAM during a ses- sion. Audio I/O latencies below 6ms were achieved by applying paches to the Linux kernel and by compensating for expected latency. A simple user interface has been implemented to match the functionality of the system.
More recent incarnations of these programs can be found in my Canvas and Overdub repositories.