Anyone tried using the 251’s lag circuit on pitch CV to create portamento?
Does it maintain proper 1 volt per octave tracking so an oscillator will stay in tune?
It delays the ramp of the inputs rate of change. If you input a 2V signal and change it to 3V the lag processor will ramp the voltage to 3V over time based on the position of the knob. Same for 4.5V to 1.037V going down.
(It doesn’t matter the amount.) so it will not interfere with pitch tracking so long as the signal presented to it is tracking correctly. It will not make up for a signal that isn’t 1V/Oct, but the mixer section will.
Yeah, that’s basically what I was asking.
I know some circuits don’t pass the exact amount of voltage from input to output. A passive multiple for example - it will suck away a little voltage and crew up the oscillator tuning. A “buffered” multiple is designed to make up for this and pass the exact amount of voltage that is coming in. Or at least that is the way I understand it.
Maybe all lag circuits are OK for this, I don’t know. I’m just putting together a few Eurorack modules and I wanted to know if I could count on the 251 for portamento. Thanks for your answer!