Hello All,
I'm an amateur electronic musician and I use a miniature modular synth. For those who don't know, this type of synth doesn't store particular settings for a creative sound; instead it relies on physical wire connections through a series of jacks using the many ports available on the machine itself, which mutally send and receive voltage-controlled signals, which in turn change frequencies of oscillators, or threshold of filters, etc... In other words, the control is analog, where, for instance, you have relations like octave-per-volt, or frequency-per-volt, etc...
https://cdn.korg.com/us/products/upload/7ff66deca06d37565b026ce984f059f2_pc.jpgThe thing is, the synth can receive and process voltage-controlled signals from external gear, but the standards to shape the signals are not very uniform. I have an external controller which sends signals oscillating between -10 and +10V, but the synth can only receive signals ranging between -5 and +5V.
Questions: could I easily modify a cable which would "attenuate" the signal, i.e. lower the potential from 20Vpp to 10Vpp, without losing the timing and integrity of it?
I know how to build a simple linear voltage regulator circuit, but that's for power, not signal. Not sure how to go about this one. Everything I found on the topic is not well informed and stem from people who, like me, don't really know how to do this right.
There's this:
https://koma-elektronik.com/?product=koma-attenuator-cable, but it looks so sleek and simple that I can't help thinking I could build a dozen myself for a fraction of the price!
Any advice welcome!