Two Samplers One Filter

[dannytaurus]

@DanSound You can do this with Send Effects and a Send Container.

• Sampler 1 has Send Effect 1, sending to Send Container 1
• Sampler 2 has Send Effect 2, sending to Send Container 1
• Send Container 1 has Filter 1

Then use a script for each Sampler to simultaneously toggle:

1. Routing the Sampler to the master, and
2. The Send Effect bypass

This will send the audio from the sampler to either [1] the Master output, or [2] the Send Container > Filter > Master output.

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Here's the script:

const rm1 = Synth.getRoutingMatrix("Waveform Generator1");
const rm2 = Synth.getRoutingMatrix("Waveform Generator2");
const send1 = Synth.getEffect("Send Effect1");
const send2 = Synth.getEffect("Send Effect2");

inline function onFilterToggle1Control(component, value)
{
    if (value) { rm1.clear(); send1.setBypassed(false); }
    else { rm1.addConnection(0,0); rm1.addConnection(1,1); send1.setBypassed(true); }
};
Content.getComponent("FilterToggle1").setControlCallback(onFilterToggle1Control);

inline function onFilterToggle2Control(component, value)
{
	if (value) { rm2.clear(); send2.setBypassed(false); }
    else { rm2.addConnection(0,0); rm2.addConnection(1,1); send2.setBypassed(true); }
};
Content.getComponent("FilterToggle2").setControlCallback(onFilterToggle2Control);

Don't know if this is the best way, but it works. Although I can imagine getting in quite a mess if you needed multiple routable effects.

I couldn't figure out how to do it with routing matrix since the filter effect seems to be hard-coded to the 1/2 outputs.

[DanSound]

@dannytaurus Thank you, this looks interesting and with proper routing it should do the job. I guess the Send Container was added recently, because I don't remember it being there a few years ago. One question though: is there a reason you hard-panned the Waveform Generators left and right? At first I thought it was an issue related to the routing

[dannytaurus]

@DanSound The panning is just to make it obvious which sound is going through the filter.

[DanSound]

@dannytaurus Ahh, got it It seems the downside of this method is that you can’t use envelopes with the filter.

[dannytaurus]

@DanSound Yeah, I assume it's because the Send Container doesn't get the note triggers, so anything triggered by a note, like a voice start constant or triggered envelope, isn't available.

If you need envelope on the filter, then ScriptNode is likely the way to go.

[DanSound]

@dannytaurus Yeah, or separate filters on each Sampler 🫠 Anyway, thanks for your help!

[dannytaurus]

@DanSound I'd try filter on each sampler first. Do some CPU tests. The code to sync all filters/envelopes/etc. from one set of controls is easy enough. And it will give you much more flexibility.

[DanSound]

@dannytaurus Yep, I've seen a few HISE-based instruments with independent filters on each sampler, and the CPU load seems fine.

[Lindon]

@DanSound best practice is to use separate filters in each sampler's FX chain - and have one set of controls that manage all the filters....

[DanSound]

@Lindon Thanks for confirming! That's exactly what I'm going to implement. Now I'm confident there isn't a better way.