Wrong midi notes being played - bug

Question

Wrong midi notes being played - bug

I'm using a midi bass in Logic X, and certain notes play the correct pitch when I pencil them in, but during playback they come out wrong. For example, I have a bass line going:

G - G - G C - B - F# E - D - B

In one octave the F# plays a lower D#, and with the line played in a higher octave the B plays a lower D#. So as of now two notes are being replaced by a lower D#. Lower in pitch to be clear. I saved and quit, reloaded and the same problem is happening. It happens with every bass pre-set.

I'm running Logic 10.0.3.

MacBook, Mac OS X (10.7.1), For use in Garageband

Posted on Dec 15, 2013 4:03 PM

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Answer 1

Dec 15, 2013 4:15 PM in response to Mroksalmarer513

This is not likely to be a bug in Logic Pro X.... (If it is.. it has gone completely unreported by anyone else..but anything is posssible) but some kind of wierd setting you have changed, somewhere.. I suspect... or something else affecting playback...

What Software Intrument are you using to play back these notes?

Can you please take screenshots of the Arrange window (highlight the track/region in question) and also the Region inspector, fully expanded... with the Region selected so we can take a look/see...and finally, of the Event Editor, again for the region in question.... (You might want to take a look there and see if anything is being recorded by accident, like pitchbend...) and post them up here...

Cheers..

Nigel

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Answer 2

Eriksimon

Level 6

15,428 points

Dec 16, 2013 2:26 AM in response to The Art Of Sound

I have encountered this bug twice, it is utterly baffling. Luckily there is a solid workaround/repair method. But no explanation.

http://www.logicprohelp.com/forum/viewtopic.php?f=1&t=99041&p=523387

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Answer 3

Dec 16, 2013 2:26 AM in response to The Art Of Sound

Hello and thanks for your reply. I took a couple of screenshots and I think they cover what you mentioned. I'm beginning to think this issue has something to do with the key limiter in the inspector area. I tried to change the parameter and Logic quit on me. I opened it up and tried again; this time it ignored my input and switched to B-1 B-1, and no longer plays any of the notes. This is in the first bass preset, but it happens with all of them.

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Answer 4

Dec 16, 2013 3:53 AM in response to Eriksimon

Wow so I'm not the only one after all. So the work-around is just to bounce the track and re-import it? Thanks for your reply. I still wonder if it has something to do with the "key limit" in the inspector area; it does seem to be bugging out on me. Check it out on the pictures I posted.

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Answer 5

Dec 16, 2013 5:43 AM in response to Mroksalmarer513

Godpork

The B1 B1 key limit will certainly have an effect.... as you are seeing... Not sure why it is being set to that or why and how it is being changed to that.. Very odd indeed.

Erik,

See.. just when you think you have 'seen' everything.. Up comes a bug like this one!

Read your thread on LPH... totally baffling... and given probably 95% of my work is with midi tracks... I have never come across this one.. nor can i appear to be able to recreate it in any sense...

Have you had this issue with the latest version of LPX?

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Answer 6

Eriksimon

Level 6

15,428 points

Dec 16, 2013 6:38 AM in response to The Art Of Sound

Latest version? Hmm, haven't had it since that thread, could be it was fixed in 10.0.4...? I mean, the file exhibiting the anomaly is there, for download and dissection.

Yes, only LP X, I never never ever encountered anything like this ("corrupted MIDI") with Logic 8 or 9, nor ("cough")in the previous century 😎😝 with Cubase 2, 3, 3.5 VST, 4.1 VST and 5 on Mac OS's 6.0.8 up to 9.2.2 ("cough"), that's why it 😮ed me too - MIDI is, computercodewise, one of the simplest protocols there is. Compared to, say, realtime audioprocessing.

Knock on wood, I haven't encountered it since I reported it last in that LPH thread - I wonder if it it was fixed in 10.0.4? I hope so.

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Answer 7

Dec 16, 2013 12:14 PM in response to The Art Of Sound

So nothing revealed by my screenshots, I take it? The issue was happening before the change in key limit. Anyhow I updated to 10.0.4 and the problem persists. I did what Eriksimon suggested as the work-around, but still no solution or explanation.

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Answer 8

Dec 16, 2013 12:14 PM in response to Eriksimon

As far as I can tell it hasn't been fixed with 10.0.4. Thanks again for the temporary solutin though. Without that I would've been screwed.

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Answer 9

Dec 16, 2013 1:12 PM in response to Mroksalmarer513

Sorry Godpork but no... I cannot recreate it here and have never come across it myself..

The fact that Erik has seen it a couple of times using imported LP9 projects only I believe (Correct Erik?) but not for a while.. and you seem to be suffering from it rather more often.. with new projects crerated in LPX....is a bit of a mystery as to why that would be so... for you but not others in general.

Maybe it's time for a call to Apple themselves.....

http://www.apple.com/contact/

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Answer 10

Dec 17, 2013 6:07 AM in response to The Art Of Sound

Ok, thank you for your time and input nonetheless.

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Answer 11

Feb 15, 2014 9:59 AM in response to Mroksalmarer513

Hi. I'm having exat same problem. Only, this is on notes played with keyb. on a track with Kontakt. A note played on A0, persist sounding on a completly differnt key. If I mouse the keab. in the editor, the right sound playes, but when touching the note, it is a different sound....!!???? I'm completly baffeld. I've been working on Logic in 14 years, and never encountered this.

Now, if I change the note(A0) in the event list, it dont relay to the keys assigned on the keyb...kinda random....!! REALLY strange.

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Answer 12

apstew

Level 1

0 points

Feb 22, 2014 7:04 PM in response to Mroksalmarer513

I'm having the same problem. When I play my file back, all low G0 notes sound instead as G#1. When I click the recorded G0 notes in the MIDI editor, they play back as G#1 as well. However when I play the vertical keyboard to the left in the MIDI editor and hit the G0 key, it does sound correctly.

It recorded and played fine for a while, and then I changed the patch in my Kontact player and that's when it started, I think. But then I removed Kontact and just chose one of Apple's keyboard sounds and it still happened even with Kontact no longer part of my project at all. Now I can't get it to go back no matter what I do.

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