How do I make signal length gates?

I want to create a patch to record percussion sound samples. I want to trigger the record module with a gate that’s the same length as the sound signal.

I’m sure there’s modules to do this, but I’ve been staring at my screen with a blank Monday brain. Is anyone awake enough to figure this out?

Envelope follower into a comparator should do that for you.

God, so obvious when you know. Thank you!!

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Another way (but it was a long time ago)