Transpose stops working after exactly 15 notes

[pdusen]

I have a newish MRCC updated to the current firmware. I'm using it to connect some MIDI organ pedals to an MPC One+ for sample triggering.

I have the pedal output connected to the MRCC'S input 1, and the MPC connected to Output 10. I am routing from input 1 to output 10, and the only modifier is Transpose #1.

I have observed that the first 15 notes I press on the pedal always transpose correctly, but the 16th note, and every note thereafter, always reverts to the original note output by the pedal. It doesn't seem to matter which notes I press; I can play the same note or multiple different notes, but Transpose always stops working after 15 notes. I haven't seen this behavior in the midi pedal itself when connected straight to the MPC; it outputs the same note consistently.

[RadekPilich]

Weird, I have tried with my MIDI keyboard and I'm not encountering the issue.
What range of notes are you using?
What's +/- transpose are you using?

[Jesse Johannesen]

This really is a weird one, I wonder what might be going on? Can you look in the MRCC in the tools there is a MIDI monitor, it should show any MIDI data being sent out, that should be enough to see if the note being sent stops being transposed, or if it's happening in the destination device. I am pretty sure it will only show MIDI data that is being routed so if we want to double check its actually sending the right notes, we can do something a little trickier and take the output of 10, route it back to another input, lets say 5, then route 5 to output 9, and look at the MIDI monitor. If we send note 60 for instance and transpose it to 72, it should say 72 out 10 and then 72 in 5 and 72 out 9 in the monitor each time we press the key.

[pdusen]

Weird, I have tried with my MIDI keyboard and I'm not encountering the issue.
What range of notes are you using?
What's +/- transpose are you using?

I've reproduced this problem just using a single note, but the whole range of notes I'm playing is 40-43 (according to the midi monitor)

---

This really is a weird one, I wonder what might be going on? Can you look in the MRCC in the tools there is a MIDI monitor, it should show any MIDI data being sent out, that should be enough to see if the note being sent stops being transposed, or if it's happening in the destination device. I am pretty sure it will only show MIDI data that is being routed so if we want to double check its actually sending the right notes, we can do something a little trickier and take the output of 10, route it back to another input, lets say 5, then route 5 to output 9, and look at the MIDI monitor. If we send note 60 for instance and transpose it to 72, it should say 72 out 10 and then 72 in 5 and 72 out 9 in the monitor each time we press the key.

According to the midi monitor, the first 15 notes I play are 28-31, then from the 16th note onward they become 40-43.

I tried the other test you recommended, but the results don't make any sense... It shows the input and output notes being identical and not transposed, and then after 16 notes they both shift up by an Octave not transposed. I only have transpose 1 on the first routing from 1 to 10. 

This would suggest that the keyboard itself is dropping an Octave after 15 notes... Except that I know for a fact that it doesn't. Like I said in my first post, this issue doesn't occur if I plug the keyboard directly into the MPC, and the MPC's note monitor doesn't report any shift.

---

One more note... Those test results would also suggest that transpose is doing nothing at all, which also don't believe to be true.

[johnleborgne]

Hello,

I have the same problem.
MRCC firmware is 1.1.075.

Here is my test setup n°1.

Sender : Keyboard : Novation Launckey 25 MK3
Receivers  : 
 - Elektron Analog Ryhtm : T1 with -12
 - Syntakt : T2 with +12
 - Digitone : T2

Transpose does not work more then 10 times in my case.

The Launckey does not send midi off message but midi note on vel 0 instead.
So I count 5 keyboard note play exactly to have transpose shuts down on the MRCC.

This seems to be the major problem with the MRCC
it's not the first problem I have with MRCC that seems related to the "non note off midi msg".


Here is my test setup n°2. (no more Launckey)

Sender : Digitone
Receivers  : 
 - Elektron Analog Ryhtm : T1 with -12
 - Syntakt : T2 with +12

Here, I can play the Digitone keyboard with no transposition problem for a few times but...
Another one show up.

After a few time, MRCC seems to send the base note to the Analog & Syntakt when Digitone send the midi note off msg.
=> these notes never stops because the Analog & Syntakt never receives note off msg.
Si I've got to use the "double stop" on the two to kill the sound.

Best

John

[johnleborgne]

I have made the some similar routing with transposition but this time I use the NI KK 64 MK2.
This keyboard sends real midi note off message.

No problem with transposition.

Best

John

[Jesse Johannesen]

Oh this is really interesting. Thanks for the update I will talk to the team.