I am creating a sound using the Alchemy synthesizer in Logic Pro X. When I play a note to hear the sound, it goes on forever.

Why could that be happening?

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  • 1
    How are you triggering the sound, via a MIDI region in Logic Pro X or via a MIDI controller keyboard (or similar)? Commented Jun 22, 2017 at 14:37
  • Also try setting "Hold" to zero in the AHDSR envelope settings and see what that does. Commented Jun 22, 2017 at 21:22
  • @SimonBosley I'm using the MacBook keyboard! Commented Jun 24, 2017 at 4:24
  • @ToddWilcox yep, it's set to zero, no luck :/ Commented Jun 25, 2017 at 3:33
  • I would say that changing the release would be more helpful than changing the hold, but I see it's not set very high anyway. Is the synth going though any other processing afterwards? Separate reverb or anything like that?
    – user22688
    Commented Aug 17, 2017 at 16:20

1 Answer 1


Click the master volume Knob and it will bring up the corresponding modulation routing make sure the ADSR is routing to the Volume.

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