Scriptnode filter.convolution – select External Audio File Slot from UI (ComboBox)?

[filipalex96]

Hi everyone,

I’m building a convolution reverb inside Scriptnode using filter.convolution.
Inside the node I added multiple External Audio File Slots (IRs) (Slot #1..#6) (see screenshot).

What I want: from the HISE Interface Script / UI, use a ComboBox (or any UI control) to select which External Audio File Slot is currently active.

I tried accessing the Scriptnode network from interface script, but:

fx = Synth.getEffect("Script_FX1") works

fx.getNode(...) does not exist in my build (“function not found”)

fx.getNumAttributes() returns 0 (so I can’t control it via setAttribute() either)

Questions:

Is there an official way to switch the active External Audio File Slot of filter.convolution from UI / interface script?

Do I need to expose a Scriptnode parameter/attribute to do this? If yes, what’s the recommended setup for selecting the slot index?

If direct slot selection isn’t possible, what’s the best-practice workaround (without instantiating multiple convolution nodes)?

Screenshot attached.

Thanks!

[David Healey]

@filipalex96 What are the multiple external slots connected to?

[filipalex96]

@David-Healey They’re not connected to anything yet.

I just added multiple External Audio File Slots to load different IRs, but I don’t know how to switch/select the active slot inside the Scriptnode network (or expose it to the UI).

My goal is to select the slot from a ComboBox in the Interface Script.

[David Healey]

@filipalex96 You don't need multiple slots for this, you just need one, and you use the combo box to load a different IR into that one slot.

[filipalex96]

@David-Healey said in Scriptnode filter.convolution – select External Audio File Slot from UI (ComboBox)?:

You don't need multiple slots for this, you just need one, and you use the combo box to load a different IR into that one slot.

Thanks, that makes sense.
Could you please explain how to actually do this with filter.convolution in Scriptnode?

More specifically:
– What is the method / API to load a new IR WAV file into the convolution node at runtime?
– Can this be triggered from Interface Script (e.g. from a ComboBox)?
– Or do I need to expose a Scriptnode parameter / use a specific node to call something like “setFile” on the convolution?

A small example or hint would really help. Thanks!

[David Healey]

@filipalex96 Instead of getting the reference to the effect with Synth.getEffect you need to get it as an AudioSampleProcessor. That will give you access to a bunch of extra functions.

[filipalex96]

@David-Healey said in Scriptnode filter.convolution – select External Audio File Slot from UI (ComboBox)?:

Instead of getting the reference to the effect with Synth.getEffect you need to get it as an AudioSampleProcessor. That will give you access to a bunch of extra functions.

Thanks a lot for the tip, really appreciate it!
I didn’t realize I should access it as an AudioSampleProcessor instead of using Synth.getEffect(). That makes a lot of sense.
I’ll try this approach and see how it goes. Thanks again for the help!

[filipalex96]

@filipalex96 Thanks again — I’m very close now.
I call Engine.loadAudioFilesIntoPool() and setFile() works in principle, but I can’t get the correct reference via Synth.getAudioSampleProcessor("...").

In my Scriptnode network the convolution node is labeled/ID like “convolution_verb” (see screenshot), but Synth.getAudioSampleProcessor("convolution_verb") doesn’t seem to resolve.

Question: what exact name/ID should I use in Synth.getAudioSampleProcessor() to reference the Scriptnode convolution “Single Sample” loader? Is it the Scriptnode node ID, or the module ID somewhere else?
Any quick way to list available AudioSampleProcessors / their IDs from script?

[David Healey]

@filipalex96 said in Scriptnode filter.convolution – select External Audio File Slot from UI (ComboBox)?:

but I can’t get the correct reference via Synth.getAudioSampleProcessor("...").

Right click on the header of the script effect and select it.

[filipalex96]

@David-Healey Hi again, thanks for the suggestion! I think there’s a misunderstanding on my side:
I’m not using the classic Convolution Reverb FX module. I’m using Scriptnode → filter.convolution inside a ScriptFX network.

However, from Interface Script:

Synth.getAudioSampleProcessor("Script_FX1") exists (auto-generated by HISE), but calling Script_FX1.setFile("SomeIR.wav") does nothing (IR does not change).

fx.getNumAttributes() is 0, and I also don’t have getNode() in my build, so I can’t access the node directly.

[David Healey]

@filipalex96 I'll make a snippet for you in a bit

[filipalex96]

@David-Healey thank you soo much

[Chazrox]

@filipalex96 fix your 'const var conv' to 'const var'

[David Healey]

@Chazrox Variable needs a name

[Chazrox]

@David-Healey ahh duhh. long week. smh. I'll take 2 shirts please.

[David Healey]

@filipalex96

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[filipalex96]

@David-Healey thank you soooo muchhh