So here is my final version 4 of the Benjolin, after incorporating Koen’s suggestion of a linear feedback shift register, as well as the oversampling from my new version 2.1.4 of the Venom WinComp module to improve the quality of the PWM output at high frequencies.
The zip file on PatchStorage includes two different versions of the patch:
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Benjolin V4 Pony - Uses 4 Befaco Pony oscillators, which have anti-aliasing to give improved sound at high frequencies. Since each logical oscillator takes two Pony oscillators, the oscillators must be synced to establish a consistent phase relationship between the square and triangle. A Count Modula Startup Delay module performs the sync once every time the patch is loaded (1 second after the patch is loaded). I have not witnessed any phase drift after that initial sync, but I can’t promise they will always remain in sync.
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Benjolin V4 VCV - Uses the 2 Fundamental VCV LFO oscillators as the prior version. These do not have any anti-aliasing, but the square and triangle are guaranteed to remain in sync.
And here is a video demonstrating just a fraction of the myriad sounds that can be produced by the Benjolin. All sounds and modulation are coming from the Benjolin, except for a bit of delay and reverb at the end of the chain. I’m using Bogaudio Switch1616 to control which outputs are patched to which inputs in the patch bay, and Stoermelder Transit to quickly transition between different preset sounds.
