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Menu mixer
When I open a synthesizer in the mixer menu the first midi volume control button, makes a adjustment and it becomes erratic and I have to restart the application
Comments
I assume you're referring to AudioBus (this forum actually covers a much wider area).
I myself use AudioBus every day, and often visit apps from the mixer screen, without experiencing MIDI problems. So there may be something in your specific setup that causes a problem, or reveals a bug in AB.
Right, I'm using iphone and ipad, and on ipad ios 12.4 it is failing me with the korg module in the mixer window when moving the midi volume is when it does strange things like leaving the sustain pedal activated
Ipad 5 ios 12.4, usb keyboard p45, au korg module y fm esentials
Where can I comment on my problem and upload the necessary information with a photo and complete details?
Also with my iphone I know with ios 13.4 it is doing the same failure
I already saw what the problem is, I already tried it with my korg bluetooth keyboard and it does not fail, it is the incompatibility with the yamaha p45, you can fix the bug
My problem is, I already tried it with my korg bluetooth keyboard and it does not fail, it is the incompatibility with the yamaha p45, you can fix the bug in the mixer screen, it becomes erratic after moving the midi volume button
@Michael Over to you. Sounds like tweaking the volume slider on a MIDI KB upsets the applecart.
Thanks heaps for taking this one this far @uncledave!
@Agapito1, can you tell me a bit more? What do you mean by erratic/strange things? You said "it does strange things like leaving the sustain pedal activated" - what else happens? Some specific examples would be very helpful, maybe even a video recording. I don't have a P45 to test with, so I'm gonna need a bit extra.
With pleasure, I also tried it with my m_audio kesytation 88 controller and it does the same, because for me it is already quite a failure to record that the sustain pedal stays put, and also like it lowers and raises the volume, and I share video of the mistake
This is the fault, which also does it with my M-audio keystation 88 ES, and This is the fault, which also does it with my iphone 6 plus,

An apology because I do not know English and I use the google translator, i from Mexico
It is also necessary that the MF splitter be memorized the changes of split and filter of the midi controls
I am a composer and this is my city

Wow, lovely!
Nice to meet you ☺️
Wow, really? Google Translate is getting scary good these days. I, for one, welcome our AI overlords.
Thanks heaps for the video, that's very clear! Also frustrating, because I can't seem to reproduce it here with the Korg Module audio unit!
Does it happen for you with Korg Module, as well? Assuming the answer is "yes", I think we need to do a bit more diagnosis. Would you be able to grab the app "MIDI Spy" (it's free): https://apps.apple.com/au/app/midispy/id1444652196
Then connect it up to your keyboard like this:
Then, using just a small number of note presses (to avoid filling up the monitor screen), reproduce the issue, just like in your video. Then switch back to MIDI Spy, and take a screenshot and send it to me.
I hope that might contain some helpful information!
Such a beautiful piece and a magnificent city.
Hi Michael thank you for your email
I have the same error
Let me try MIDI spy and come back to you!
Thank you very much for your response much appreciated
Moz
MIDI Spy not for iphone but will try something similar
It is strange that I can (anyway) make the same error direct in the app without touching the controller...
We can work it out !
On korg nanokey studio no problem

the application midispy is no longer available, but with the Midiwrench
menu the screenshot
@Michael Can this be related to the MIDI Clock messages, every 20 ms?
I also got hold of midi wrench for Iphone - will run the error and see what I get - thanks for posting!
Thanks guys – actually, MIDI Wrench won’t do what we want because it listens to all incoming messages. I need something like MIDISpy which will only listen to the messages coming from Audiobus. What happens if you search in the App Store for MIDISpy? Maybe that link just doesn’t work in your country?
It is the same information, the clock signal that is sent continuously, and the normal midi signal of notes and pedal that I play with the piano.
Huh!! No note offs! Could you record another trace after re-launching audiobus without touching the mixer, to see the original signal?
There are some Note Ons with velocity zero, which should be OK, but they seem to stop near the bottom of the screen. Glitchy behavior?
LOL, Same reflection as me but @j_liljedahl pointed out to me that velocity 0 is the same as note off.
So a NOTE ON with Velocity 0 == Note off
Exactly, until they stop. Notice 45 32 and 52 39, followed by 45 39 and 52 36, with no velocity zero in between.
Let me do it as you ask, because I hope to use the audiobus without problems, in the korg module the split or dual mode does not work and they do not pay attention in any medium
If I'm not mistaken Korg Module Pro's split & dual modes are only available in the stand-alone app.
When using the AUv3 the dual / split mode is not available, it's by design.
To layer & split sounds use two instances of the AUv3.
Cheers!