The easiest way to implement a very short delay line / latency to one of two mono channels

tegendemuur

Well-known member
I would like to play around with adding some latency to one output, and leave the other as is, to play with the widening of two same-ish sounds. There's a lot of boards that I could add, but most have way more functions than I need: I just need to set the time, and flip a switch for off (0%) on (100%) wet. Maybe there's a bit inside a circuit that I could simply copy? Or maybe there's a little utility tool for it?
 
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Two ways come to my mind - all-pass filter (introduces phase shift of the signal) or a delay with very short time (5-20 ms for example).

Headphone amp with stereo simulation (all-pass filter). By the way - phase shift of the all-pass filter is frequency dependent...

Shortest delay time for the PT2339 is 30ms (from what I remember) so you have to find another way. This for example. Or any other "double tracker" type pedal.
 
One more double tracker from the same author.
Looking for Stalker / Shadow, saw your thread about them a few years ago. Interesting stuff to keep in mind! It goes a bit above my head right now, but that should settle once the ideas surrounding this pedal I wanna makes gestates.. Gotta procure those chips; glad to see Ali from China sells the real thing. Only dared to buy pots...
 
From the National Semiconductor Application Note 32: FET Circuit Applications.

View attachment 76243
Back again, putting the Shadow on the backburner and getting a go at this 360 degree phase shifter! (As it was quite easy to wrap my head around.) The 2N3070 JFET is obsolete, and been going through replacement lists, nothing but obsolete parts pop up. Any idea how to progress into finding a nice equivalent that works in this little circuit?


Edit: Did find a version with J202s as well. Thankfully, these are somewhat more readily available. Still curious what aspects of these JFETs makes me need either of these. And how to turn the 12V schematic into a 9V one. Oh, and then I need to recalculate the whole thing since I have to use a dual gang 500K pot instead. There's no end to questions, when diving into these things, it seems.
 

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