Advanced Delay Time Cheat-Sheet

I did some math on the delay times and how they relate to measures, metrics and rhythm… also helps which numbers could be useful etc… I don’t know if I did any mistakes (I’m unsure about the parameter-range since I’m not with my A4 right now). Also I didn’t check if this values work out on the actual machine. If someone finds the time, to test this, I’d be glad to update the link…

PDF Version:


Thanks, as you see by the chart, the higher the value the more difficult it will be to set times by ear. Also there are some interesting correlations in the odd-measures that can provide you with good results when combining polyrhythmic stuff.

Also numbers are beautiful! :stuck_out_tongue_winking_eye:

Thanks for this.
I posted something similar for the arp settings (but way less detailed and in depth) a while back, but can’t find it now despite the wonderful search engine on this forum.

Yes, I remember, that initially brought the idea to me. I’ll see if I can dig it up. Also there’s some more parameters in the A4 that could benefit from bringing more details in. I also thought on doing something like a web app to match certain values in respect of BPM to milliseconds etc…

Found it:

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Ah, yes thanks, I’ll see if I can work that into my chart…

Chears !

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Sweet, thanks man :+1:

more numbers :slight_smile:

Ah, excellent, didn’t see that. We should work together on a “A4 by numbers” documentation… :wink:

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Why in the hell doesn’t the A4/AK just have it’s delay and arp time represented in beat divisions?

It makes no sense!

Thanks for this.


Got round to mapping out the LFO times.

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Nice one :+1:

I was looking for exactly this. Much appreciated :slight_smile:

Here’s a chart I whipped up for filter 1’s cutoff frequency:


Why not just say that it’s a semitone per knob increment?

Because it’s not. I don’t know why but 440Hz is at 59.17 and 880Hz is 70.74 – which would imply a semitone every… 0.96 knob steps or so.

But this probably varies on the device. My Track 3 voice for example is noticeably flatter than this – 70.74 on Track 3 is more like 860Hz. And yeah that sucks if you’re trying to get it to track to the keyboard.

I made that chart before Overbridge as well. Now that we have precise two-decimal values for the filter I can probably tighten that curve up a bit.

Would be nice if you used a log scale for the frequency, like a musician would. :wink:

That’s imprecise actually - the underlying ‘raw’ data is 14bit, that’s (in OB) a clumsy way to represent it - if you have a midi monitor you’ll see the fine detail coming through on the LSB part of the NRPN string

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