[AL37] 2 Note On & 2 Note Off messages?

Lab AstroLab
,
#1

Connected via USB to MacOS. Viewing MIDI messages in Protokol:

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Each note sends 2 messages. No loops. No other software loaded. Only 1 AL37 and Protokol loaded. I use Protokol all the time to troubleshoot MIDI communications. This is the first time I’ve seen this.

Any ideas?

#2

Hi @EnjoyRC ,

I have no idea what’s going on.

Du you hear or feel notes are being triggered twice?

#3

I do not hear notes doubled on the AL37

#4

Sat here scratching my head too, loop was the first thing in my mind, but you’ve already discounted that.

Can you describe your setup in detail?
The only two things i can think of that might do that would be a loop somewhere, if you’re using a DAW based setup, or it’s something component based.
I take it you’ve also tried a different midi controller with different results?

Post should be @EnjoyRC not @LBH apologies there.

Edit:
The ONLY time i’ve ever encountered this, outside an actual loop, it cleared after restarting my computer.

#5

Nothing special loaded at this time. Only software loaded is Protokol. Simple USB-C connection from AL37 to MacBook Pro USB-C port. No BOME loaded, or any other MIDI utilities. Just now, I tried My Arturia MiniLab 3, it sends single messages.

#6

It’s fortunate if it does’nt affect anything.
Do it send on 2 ports or something like that? Just a thought.

I can suggest you contact Arturia support through your account. I assume they would know if this is normal or not, and if it should have an impact on anything.

#7

Yep, this is where my thoughts were headed too, this is a reasonably common issue in Cubase when setting up midi ports initially.
Any chance of some screenshots showing your routing settings?
Definitely worth giving Arturia support a shout too, if it IS a hardware issue then they will certainly want to know about it.

#8

As visible in my screenshot, only 1 port (Endpoint), and both MIDI Channel 1

#9

Disconnected USB. Plugged in a CME C2MIDI Pro. Connected MIDI 5 Pin Din connectors to the AL37… Still see doubled notes.

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#10

Thanks @EnjoyRC

I think this is definitely one for Arturia Support!

If you log into your account, you can contact them directly on that link.

HTH!

1 Like
#11

Thanks @matjones, I created a support ticket.
Another thing that adds to the head scratching… Notes are doubled. No CC messages are doubled. That eliminates any system loop theories.

1 Like
#12

Yeah, it’s a weird one for sure @EnjoyRC
That’s why i asked if a DAW was involved initially, as it sounded like you might have inadvertently set up a loop. The fact it’s only double triggering notes and not CC data would add to that thought too, as it sounds like a filter had been set up as well. It’s clearly NOT the case here, though.