[sdiy] Odp: Pink?

Roman modular at go2.pl
Sat Aug 18 09:24:35 CEST 2018

You can always limit the slew rate, that will give you more pink, or even red or brown.  For example I enjoy very much a square-ish waveform that is derived from triangle fed to overdriven amplifier. It produces almost a square wave when you look at it at the scope, but it's more like trapezoid. And the slope changes with frequency so it sounds nice, like filtered.  Sawtooth may be not so easy - I can imagine a VCO with 2 integrators reset by the same pulse, one for regular saw slope, and 2nd one with about 20 times smaller capacitor. Then reverse the fast one and switch between slow and fast slope on zero-crossing. That faster integrator does not need precision expo converter, you could skip also tempco for that, so not much hassle and cost. There'll be a short glitch while integrators reset, but what would you expect from a random idea popped up during breakfast.   Roman   PS. I hope my spelling throughout this message was correct ;)  Dnia 17 sierpnia 2018 16:14 Mattias Rickardsson <  mr at analogue.org > napisał(a):  Hi all,   I often experience VCOs "too bright", having too much high end in the sawtooth & pulse waves.  I often experience VCF resonance peaks "too bright", being too strong at higher cutoffs.  I often experience white noise "too bright", having too much high end...   ...while pink noise feels more balanced. Equal power per octave, not per Hz.  Also, good sounding loudspeakers/studios tend to have a bit pink-ish spectrum roll-off from the sound source to the listener position, suggesting that some sort of pinkification of clean sounds could be desirable.   So, why aren't VCOs and VCFs more spectrally pink?  Have there been any attempts historically to alter their characteristics a bit in synths? :-)   /mr   ______________________________  Synth-diy mailing list   Synth-diy at synth-diy.org  synth-diy.org synth-diy.org
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