Best way to suppress transients in reverb/delay

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Okay, here's the deal: I have a delay and reverb on a source with a percussive attack. I want to prevent said initial percussive attack from making obvious "doot doot doot doot" repeats in the delay and reverb audio output.

What's the best way to do this? Use a delay with a ducker?
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The obvious solution, to me, is to put a transient shaper in front of the delay. This will, of course, only work if you have the delay/reverb on a send or parallel channel.

I don't think ducking will give you the result you're after.
CrimsonWarlock aka TechnoGremlin, Moved to Reason and Rack Extensions exclusively (from Reaper and VSTs) several years ago.

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crimsonwarlock wrote: Fri Jun 20, 2025 9:14 am The obvious solution, to me, is to put a transient shaper in front of the delay. This will, of course, only work if you have the delay/reverb on a send or parallel channel.

I don't think ducking will give you the result you're after.
Ah yes, of course! :dog:

Thanks, that should be what I'm looking for
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Use a reverb instead of, or chained after the delay? :shrug:
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Don't send the delay to the reverb, or at least send less (ie put the delay on a different bus).

And/or high-pass the input into the reverb - a lot of the most obvious transient information that will make it through the the reverb will be from the low-end frequencies

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If the delay and reverb are on sends, the first thing I'd try would be a simple low pass filter before the FX.

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Just FYI, in the Reason world there is a delay Rack Extension, especially aimed at this. It's a delay with a built-in transient-splitter. Maybe you can get some inspiration from that one:


CrimsonWarlock aka TechnoGremlin, Moved to Reason and Rack Extensions exclusively (from Reaper and VSTs) several years ago.

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I’ve don’t the transient shaped thing but another good way is to get a really smeary short reverb. We’re talking only early reflections but pretty controllable so you can adjust to taste. Process it. On a second track likely depending on DAW you’re using. Then shift them to be atop the transient or even before. We’re talking samples here. It will smear/soften the transient.

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ohsomiggz wrote: Fri Jun 20, 2025 7:31 pm I’ve don’t the transient shaped thing but another good way is to get a really smeary short reverb. We’re talking only early reflections but pretty controllable so you can adjust to taste. Process it. On a second track likely depending on DAW you’re using. Then shift them to be atop the transient or even before. We’re talking samples here. It will smear/soften the transient.
So, you're talking about bouncing the reverb send to audio, then adjusting its offset to smear things with the dry signal?

Could you give me an example of a reverb plugin and settings that you'd use here? Thanks!
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I’ve used Fabfilter pro R2 to do this. I don’t have waves r-verb but it has good early reflections control. You could also use my plugin Marco with the profile all the way to the right and color toggled on and blend the mix knob.

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JerGoertz wrote: Fri Jun 20, 2025 8:59 am Okay, here's the deal: I have a delay and reverb on a source with a percussive attack. I want to prevent said initial percussive attack from making obvious "doot doot doot doot" repeats in the delay and reverb audio output.

What's the best way to do this? Use a delay with a ducker?
you can use more DIFFUSION. BUT for percussion it can ruin the sound.
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ohsomiggz wrote: Sun Jun 22, 2025 12:04 pm I’ve used Fabfilter pro R2 to do this. I don’t have waves r-verb but it has good early reflections control. You could also use my plugin Marco with the profile all the way to the right and color toggled on and blend the mix knob.
Looks sweet, thanks for showing me this
andivax wrote: Sun Jun 22, 2025 1:18 pm you can use more DIFFUSION. BUT for percussion it can ruin the sound.
I'll give that a try (it's not a percussion sound per se, more of a bell)
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Almost full wet & very minimal feedback

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The best effect would be to not have any transient going into the reflection.

Put the reverb on separate or send channel, add something like Volumeshaper in front of it and let it be triggered by the transient of the source (or better yet, midi notes).

That way you have a lot of control over how you cut out the transient and don’t have to mess with the reverb signal.. at least not to mask that transient. And you don’t have to bounce the reverb to work with it either.

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lwj wrote: Wed Jul 02, 2025 7:40 pm The best effect would be to not have any transient going into the reflection.

Put the reverb on separate or send channel, add something like Volumeshaper in front of it and let it be triggered by the transient of the source (or better yet, midi notes).

That way you have a lot of control over how you cut out the transient and don’t have to mess with the reverb signal.. at least not to mask that transient. And you don’t have to bounce the reverb to work with it either.
also you can use transient shaper before reverb and kill that transients by reducing "attack" parameter. I would recommend Kilohearts and Assault Audio plugins.
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