Odd Sound/Phasing Effect When Switching Captures on the Grid

Has anyone else noticed an odd sound when switching captures on the same preset? It’s almost like it goes out of phase for a split second then comes back. It’s odd, and hard to explain. I noticed that if I use an external footswitch for expression control (an actual switch, not an expression pedal), it doesn’t happen. It’s only when using the footswitches within QC.

My particular use case is I have 1 capture set to a clean/breakup setting, and then another capture set to full drive. I have these both assigned to footswitch E in stomp mode so that I can flip between them like you would a dual channel amp, which is what my captures are from - same amp, different channels.

Yeah I notice that

haven’t noticed that, but can experiment to try to duplicate.

All captures? Or specific ones? Nothing else changing, just the caps?

Yeah the only thing changing not the grid are the captures, and there are no effects blocks on before them either, so nothing should be impacting the sound prior to switching them. It’s just odd that using an external switch doesn’t have that problem when using the EXP input and control, but the native QC footswitches seem to have the issue. It’s something I’ve noticed for quite awhile, but started using an external switch and it went away… Now, I’d like to get rid of the external switch so it’s one less thing I have on my board so I was curious if others had experienced this.

Have you tried the new Phase Doctor utility to determine if it’s actually phasing or maybe something else?

No, I haven’t dived into that yet. I can’t imagine it would really be phasing, because it’s a capture of the same amp just different settings - DI capture with the same equipment, same day, etc - and it’s my amp that I captured so I know it’s not two different amps or channels that could be out of phase with each other.

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I’ve always noticed a slight warping/phasing sound when switching scenes or stomps for amp blocks. I’m using the footswitches on the QC, but yeah it’s been there for a few years now. I just assumed they need a quick thing between the blocks so it doesn’t make a pop sound, etc

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NDSP has addressed the ‘crossfade’ between scenes in the past; perhaps it’s on all Scenes (at the time they spoke of it we’d never heard any indications that Scenes might have a slight ‘gap/pause/dip’) but we only hear it in certain circumstances. If there are lots of other blocks on the grid maybe we’re not hearing as much as is actually happening?

I think it’s always good to refer questions like these straight to Support@neuraldsp.com too, many times it’s the only way we find out about what’s really going on ‘under the hood.’

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Ah! I’m not in scene mode though, I’m on stomp mode. I have the 2 captures set to footswitch E just like it would be channel switching pedal. Not sure if that makes any difference or not….

I don’t think that makes a difference because I’ve encountered this with captures and models

Well, for what it’s worth, I tested everything out today at rehearsal and it seems the phasing/crossfade has gone away now. Not sure why it would randomly appear and disappear, but I tried it with my 2 button external switch and with the built in QC switch in stomp mode and no issues.

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