Looking for a circuit that will...

[Drake120]

...well, do something like "only-once-delay". So, when I play note, there's  the note repeated, and then nothing until I play something else. Of course I don't want to use only for "one-repeat-echo", I have a more complex vision of it, but that's what I need. And, of course, it will be sweet if it can be done with analog parts :]

Thanks,
(JD)^S

[The Tone God]

Delay with no feedback for repeats.

Andrew

[petemoore]

  That or the quiery is about an effect that would require someone 'tap' the echo feed bypass.

[the recluse]

You could play the note twice instead of once?

I know it's no fun but...

[Drake120]

Well, my fault. I didn't explained it well. I'm looking for sth that will delay the signal, so when I play note, there's silence and then the note after some time. Sorry for that and thanks for the advices you already gave

(JD)^S

[grapefruit]

You want a delay with the blend set to all delay, or no dry signal. You could use any delay for this, depending on how long you want it to be and the quality of sound you want...

If you simply want to delay what you play me thinks you want a clean digital delay. Not DIY

Stew.

[snufkin]

hi drake120 a good place to start would be http://www.tonepad.com/ and the Rebote delays (this is a digital delay)

but more importantly to clarify

how long do you want the delay to be ?

[Drake120]

Of course, I've already started research in Rebotes (and also in Echo Base)

Hmm. I don't think blend set will work here for me. Even if I split signal before delay, then mute the dry signal, the wet signal will still contain the first note :/ But, maybe it's possible to split the signal somewhere "inside" the delay circuit, to have the original note and the repeated note in two separate lines, and then mute the original note?

Thanks for your answers,

(JD)^S

EDIT

Oh, and the delay time. Well, standard PT2399-based circuits' time will be just fine. 600ms or so.

[slacker]

Any of the PT2399 based delays will do what you want if you set the feedback/repeats to minimum and cut the dry signal.
Any notes you then play will be delayed by whatever time the delay is set to, so if you set it to 300ms and then play a note you'll hear the note 300ms after you played it.
If you want to build something yourself then start by looking at the "Surround Sound" circuit in the PT2399 data sheet, that does exactly what you want.
An even simpler way to do this would be to get a Boss DD3 and just use the "Direct Out" with the repeats on minimum that will do what you want and at longer times the quality will be better than a PT2399 based circuit.

[MikeH]

Basically search for the stereo rebote mod.  Then just use the wet output instead of both outputs.

[Drake120]

Thank you guys very very much! That will help, as soon as... I will find the stereo mod :] Googled it and it didin't come up with any adequate outcomes. BTW, it will be cool if the mod will also work for the Echo Base, 'cause I'm planning to build it instead of a Rebote. Or maybe slacker as a inventor of Base can tell me how to do the stereo mod?

Thanks!

(JD)^S

[MikeH]

Ok fine...

Can't help you with the echo base, but here's the rebote:

[slacker]

Stereo mod you say  

Just remove the 10k that connects pins 2 and 7 of U3B. Then connect a 200n cap and 100k resistor to pin 7, same as they are on pin 1, that's your dry out. The original output is your wet out.
The dry out will be out of phase with the wet but I don't think that's a problem.
If you use a switched jack for your dry out you could make it disconnect the 10k when a jack is plugged in so you could have stereo or mono modes.

Or do what Mike suggested, the 10k resistor after the level pot is the one you want.

[Drake120]

Thanks a lot! The phase isn't a problem cause the dry output will be muted anyway Yeaah, now I'm able to do what I wanted Of course, I will post it as soon as it will be finished! For now, my quest is: "go to the dungeons, kill all the zombies, dark elves, demons etc. and bring me a pencil case which I left there. If you happen to make it, I will give you my PT2399".

Well, you know, recently I started playing Morrowind again :]

THANKS!
(JD)^S

[sean k]

What if you combine an envelope filter with a compressor/sustain or a timed gate that controls a compressor/sustain. So the note goes into the comp, which has a gate on the output, and into a rectifier which charges a cap to define when the gate opens. Most probably easy to just get a delay chip though. But then again an attack release filter like the analog synth guys use could work and sustain as well.