A technical support community for Apple Logic Pro users.

 
apaclin2
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Midi Sustain Bug

Tue Jun 15, 2021 5:18 am

Recently stumbled upon a bug where sustain randomly doesn't release. For what reason?
 
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David Nahmani
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Re: Midi Sustain Bug

Tue Jun 15, 2021 7:51 am

Can you make a copy of your project, strip it down to only the problem track, and attach that here? How to attach files to your post
David Nahmani
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JakobP
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Re: Midi Sustain Bug

Tue Jun 15, 2021 8:05 am

Does it work if you disable midi chase for cc64 in project settings under midi/chase ?
Logic Pro 10.5.1 • OS X 10.14.6 • MBP 15" Early 2013 • 2.4 GHz Intel Core i7 • 8GB RAM • iMac 27 Late 2013 • 3.4 GHz Intel Core i5 • 16GB RAM • Focusrite Saffire 6 USB • Presonus Inspire 1394 • Roland UM-One mkII • Behringer FCB1010 • Gibson ES335 • cheap midi keyboard
 
apaclin2
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Posts: 113
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Re: Midi Sustain Bug

Tue Jun 15, 2021 8:53 am

JakobP wrote:
Does it work if you disable midi chase for cc64 in project settings under midi/chase ?

If you are talking about "Control Changes -> 64-71", then yeah it does the same thing when turned off or please specify what is it :) Weirdly it happens only sometimes at random spots and I had this thing in other projects too!
 
apaclin2
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Re: Midi Sustain Bug

Tue Jun 15, 2021 9:01 am

David Nahmani wrote:
Can you make a copy of your project, strip it down to only the problem track, and attach that here? How to attach files to your post

It doesn't allow to attach a logic project.
 
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David Nahmani
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Re: Midi Sustain Bug

Tue Jun 15, 2021 9:02 am

apaclin2 wrote:
David Nahmani wrote:
Can you make a copy of your project, strip it down to only the problem track, and attach that here? How to attach files to your post

It doesn't allow to attach a logic project.

Make sure you follow all the instructions in the link I shared. You need to attach a .zip file here.
David Nahmani
• My Logic Pro X 10.5 book (Apple Pro Training Series)
Contact me for Private Lessons
Logic Pro X 10.6.1
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iMac 3.2 GHz Quad Core i5 — MacOS X 10.15.4 — 8 GB RAM
 
apaclin2
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Re: Midi Sustain Bug

Tue Jun 15, 2021 9:05 am

Here it is!
Attachments
Sustain Bug.zip
(9.68 MiB) Downloaded 5 times
 
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David Nahmani
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Re: Midi Sustain Bug

Tue Jun 15, 2021 9:11 am

Got it and found the culprit: open the Event List and you'll see a Sustain event (with a value of 1) at 6 1 1 55. Delete that event.

sustain event.png
sustain event.png (25.74 KiB) Viewed 209 times
David Nahmani
• My Logic Pro X 10.5 book (Apple Pro Training Series)
Contact me for Private Lessons
Logic Pro X 10.6.1
MacBook Air 1.3 GHz i5 — MacOS X 11.0.1 — 4 GB RAM
iMac 3.2 GHz Quad Core i5 — MacOS X 10.15.4 — 8 GB RAM
 
apaclin2
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Joined: Sat May 02, 2020 7:08 am

Re: Midi Sustain Bug

Tue Jun 15, 2021 10:24 am

Thanks man! But why does it work like that? One spot where the value is 1 affects the whole song? And so it must be 127 or 0 or it gets buggy?
 
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David Nahmani
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Re: Midi Sustain Bug

Tue Jun 15, 2021 10:51 am

apaclin2 wrote:
Thanks man! But why does it work like that? One spot where the value is 1 affects the whole song? And so it must be 127 or 0 or it gets buggy?

I don't see a bug, but it certainly is sloppy MIDI programming/recording. AFAIK the MIDI standard defines value 0 = OFF, and value 127 = ON. Anything else is left for interpretation.

In the automation lane, what you see are just MIDI events. Why they end up there depends on the controller and your performance, or your MIDI programming. How they are interpreted by the instrument depends on the instrument, the patch loaded in the instrument and how it's programmed.
David Nahmani
• My Logic Pro X 10.5 book (Apple Pro Training Series)
Contact me for Private Lessons
Logic Pro X 10.6.1
MacBook Air 1.3 GHz i5 — MacOS X 11.0.1 — 4 GB RAM
iMac 3.2 GHz Quad Core i5 — MacOS X 10.15.4 — 8 GB RAM