http://www.macnn.com/articles/02/04/23/audio.toolbox/
Audio Toolbox 1.0: audio function generator
updated 08:15 am EDT, Tue April 23, 2002
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Black Cat Systems has released Audio Toolbox 1.0.0, a $20 shareware audio function generator that can produce sine, square, triangle, and sawtooth waveforms of any frequency up to 22 kHz, as well as generate noise. It offers full control over the frequency, type and volume of each sound produced.
