This program is a little command line tool that creates sine waves, plays them back and writes them to RIFF (.wav) files. It takes a list of frequencies and durations then creates a wave of those frequencies and durations. The input consist of as little as a simple frequency or as complex as a list of commands specifying both right and left beginning and right and left ending freqencies and durations. A complex example would be: $ sinus 600:1400,.2 1400:1500/1300,.4 1500/1300:1400,.4 1400:600,.2 which would produce a 0.2 second sweep from 600 -> 1400 Hz then on the left channel sweep from 1400 -> 1500 -> 1400 over 0.8 seconds and on the right channel sweep from 1400 -> 1300 -> 1400 over 0.8 seconds, then sweep from 1400 -> 600 over 0.2 seconds. It is capable of generating 8,16,32 bit waves at any sampling rate in either Mono or Stereo. It began as a way to play with audio under Linux and a way to test the frequency response of my ears (which turns out to be around 18600 Hz) and grew from there. Angus Mackay