PSIM-1 examples
2004-02-22 by Woody Wall
I've just posted some code and an audio file to the files section. The code is called 'ramps.bas' and is *very* loosely based on the idea of the Serge Universal Slope Generator. When a trigger is received at the Start input, four one-shot descending ramps are generated. The basic rate is set by the voltage at IN-1. The slope at OUT-2 is twice OUT-1, OUT-3 is three times OUT-1, and OUT-4 is four time OUT-1. The ramps can't be retriggered or the rates changed until OUT-1 reaches zero. This way, it performs frequency division on the trigger based on the voltage at IN-1. The audio sample has two of the ramps controlling the frequency of a Blacet VCO and the noise filter on a Dark Star Chaos. A Wiard Noise Ring is providing the trigger to the PSIM-1. One of the NR random outputs determines the ramp rate. The other NR out is controlling the DSC noise clock. ARP 2600 is doing the random eighth-note bass line. Woody