MF-104 Delay Time Sync

[Alien8]

No, the delay time is controlled via a control voltage, meaning that any changes in voltages cause the delay time to change too. This means that when the square wave starts at it's maximum, you have one delay time, and when it switches to it's minimum it has another time, causing the delays to slur and change pitch, which is a neat effect.

What needs to be figured out, is how the user would tap a momentary switch at a specified rate, and then translate that into one constant voltage. From there the voltage value would need to be sync'd to a delay time that equals the tap rate.

As an example, you tap at a slow beat speed, a CV for that speed is generated via "some kind of thingy-mo-bobber", and connected to delay time CV. When you tap faster, you would generate a lower CV value compared to the last to speed up the delay time.

Essentially we need a constant voltage supply that is attenuated by the rate you tap your foot.

[RichardK]

But the problem isn't with making a voltage from a tap delay.

It's making that voltage correlate to every pedal manufactured. Where the pedals are not calibrated to a particular standard. I was trying to think of a way that this lack of calibration could remain whilst offering a triggering/timing solution.

Let's say you have what is it, 5V? And without actually thinking about curves and everything for the sake of argument 2.5v is 120bpm.

Even if your pedals are sure that 2.5v is 120bpm, how can you be sure your CV source is giving that voltage?

I understand the loop of calibration required a little, and I'd have a go at calibrating if adjustments were provided, but I think there are too many variables and it'd need an additional digital module to measure the tempo and output a voltage to become part of the delay itself (and for that delay to then be calibrated in the factory, which I expect is a time consuming process). And then awkward buggers like me would either want a trigger in to synch to my synths LFO, or a MIDI input to sync it to MIDI clock.

It's already £500 here. With those bits in I'd expect at least another £100.