User profile for user: Bombdiggedyfly
Bombdiggedyfly Author
User level: Level 1
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One note sustain problem when using Akai MPK61

have a confusing problem. When I use my Akai MPK61 with logic 8 one pitch sustains indefinitely. This problem occurs on a different physical key but the same pitch when I switch octave. It also occurs on the same pitch on the pads.
This occurs both when recording and when not.
On the piano roll, it shows me that the midi block for that note keeps going (no midi off signal?).
I have sent the keyboard back, they have found no problem with it. They tried using it with ableton live and the problem did not occur. I have tried a different midi keyboard with my Logic 8 and the same problem does not occur.
I now have the Akai back and have the same problem.


Any Ideas? I would very much appreciate any help you can give me.

Macbook, Mac OS X (10.5.8)

Posted on Jan 20, 2010 9:46 AM

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19 replies
User profile for user: Bee Jay
Bee Jay
User level: Level 6
10,900 points

Jan 20, 2010 9:51 AM in response to Bombdiggedyfly

This is a common thing and usually gets at least one posting every few days here.

You've accidentally MIDI learned that MIDI note off to a command, so now it never reaches the sequencer.

Open your controller assignments and remove the learned command. If you don't know how to do that, just trash your Logic preferences and everything will be back to normal.
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User profile for user: Bombdiggedyfly
Bombdiggedyfly Author
User level: Level 1
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Jan 28, 2010 8:53 AM in response to Bee Jay

Thanks Bee Jay
Simple solution in the end, always the best kind

I have another question you might be able to help with.
I want to assign the tap tempo button on my akai mpk to control the tempo on logic.
So, because Logic can not be a slave, I want the tap tempo button to control the bpm in logic in order to use effects such as delay in a live band setting where the tempo is fluctuating every now and then.
Any Ideas?
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User profile for user: Bee Jay
Bee Jay
User level: Level 6
10,900 points

Jan 28, 2010 9:49 AM in response to Bombdiggedyfly

You can do this, but you'll need to try it out to see whether it works for you, you might not find it a workable solution.

You'll need to use Logic's tap tempo function and assign a MIDI command to "tap tempo". Now, open the tempo interpreter, put Logic into manual sync, and tap your key/MIDI button five times and Logic will play at that tempo.

You can keep tapping to get Logic to follow your tempo.

I wouldn't use this in a live situation, personally, but give it a go...
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User profile for user: Bee Jay
Bee Jay
User level: Level 6
10,900 points

Jan 28, 2010 1:42 PM in response to Bombdiggedyfly

The thing is, "tap tempo" is a tricky function, because the software has to read the timing of your taps, compare it to the current timing, work out which taps were accurate and which weren't, and change the tempo to move towards the new timing.

The tempo interpreter is the function to do this, there is no other function in Logic to do this in real time.

You could remote control the tempo to a fader, but that's not the same thing.

I'm not sure offhand how Live does it... but if you run Live+Logic, Logic is the Rewire master and so controls the tempo anyway, making this a no-go if you must run Logic.
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User profile for user: Bee Jay
Bee Jay
User level: Level 6
10,900 points

Jan 28, 2010 1:56 PM in response to Eriksimon

True, but that's because we understand what we are doing.

Computers don't understand, they just do.

if you ask them to do something based on an implicit understanding of something, computers are cr.ap.

We have to teach them how to understand something, but even then, they don't understand it, then pretend to understanding based on the rules we give to interpret things.

But it's not understanding.

Understand?
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User profile for user: Eriksimon
Eriksimon
User level: Level 6
15,428 points

Jan 28, 2010 2:13 PM in response to Bee Jay

Still, they've only been here for an infinitesmally small time - were they subject to evolution through natural and cultural selection, I can imagine them having emotions in, say, 12,000 years, give or take...? and if they will ever be intelligent? Intelligence is something we as humans create the benchmark for, so that is completely unpredictable.
What do you mean, off topic?
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One note sustain problem when using Akai MPK61

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