Analog Sound Synthesis on Your Computer

Step 10 Suggestions

1) You can vary the total simulation time - keep it short while you're playing with components and when you get the sound you like, then set the simulator to run for 30 minutes (1800 sec) or however long you like. You can copy circuits from one page to another and you can make subcircuits so you can just connect little circuit modules together like using a patch board on a real synthesizer.
2) A CD sample rate is 44.1 ksps. If you keep the maximum time-step down to 20 us you'll get a "clean" output because the simulator will have data available for each new sample. If you use a smaller time-step the simulation will be slow and probably won't have any effect on the sound. If you use a longer time-step you may hear some aliasing that you may or may not like.
3) use the .save dialogbox statement on your schematic and when you run the simulation and select just one of the voltages or currents to keep the size of the.raw file small. If you don't make a selection, ALL the voltages and currents will be saved and the .raw file will get VERY large.
4) try using very low frequencies to modulate higher frequencies
5) try using higher frequencies to modulate lower frequencies.
6) combine outputs from some low frequency sources with some high frequency sources to make things interesting.
7) use a pulsed voltage source to modulate a sine or other source to provide rhythm.
8) use analog circuits to shape voltage pulses into something you want.
9) use mathematical expressions to define the output of a behavioral voltage source

Have fun!