Comments (11)
SpotlightKid
commented on August 19, 2024
I think what you are seeing may be "running status": http://www.somascape.org/midi/tech/spec.html#runstat
Please run the script midiin_callback.py from the examples, select the MIDI port, your keyboard is attached to and play some notes. Then post the output here.
Also, without seeing the code you are using, I can't reproduce your problems, so please post a minimal example that demonstrates the problem, if you can.
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kinga-ust
commented on August 19, 2024
Thank you for the response! I use expanded version of midiin_callback.py in my code, some results from running given file (constantly key 96 is pressed):
[MidiLink Mini:MidiLink Mini MIDI 1 20:0] 1555538410.931765 [144, 96, 0]
[MidiLink Mini:MidiLink Mini MIDI 1 20:0] 1555538410.993423 [144, 96, 70]
[MidiLink Mini:MidiLink Mini MIDI 1 20:0] 1555538411.076520 [144, 96, 0]
[MidiLink Mini:MidiLink Mini MIDI 1 20:0] 1555538411.139425 [144, 96, 72]
[MidiLink Mini:MidiLink Mini MIDI 1 20:0] 1555538411.222518 [144, 96, 96]
[MidiLink Mini:MidiLink Mini MIDI 1 20:0] 1555538411.265334 [144, 0, 96]
[MidiLink Mini:MidiLink Mini MIDI 1 20:0] 1555538411.348264 [144, 67, 96]
[MidiLink Mini:MidiLink Mini MIDI 1 20:0] 1555538411.410048 [144, 0, 96]
[MidiLink Mini:MidiLink Mini MIDI 1 20:0] 1555538411.494266 [144, 67, 96]
[MidiLink Mini:MidiLink Mini MIDI 1 20:0] 1555538411.555934 [144, 0, 96]
[MidiLink Mini:MidiLink Mini MIDI 1 20:0] 1555538411.639266 [144, 66, 96]
[MidiLink Mini:MidiLink Mini MIDI 1 20:0] 1555538411.682106 [144, 0, 96]
[MidiLink Mini:MidiLink Mini MIDI 1 20:0] 1555538411.765017 [144, 66, 96]
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SpotlightKid
commented on August 19, 2024
I use expanded version of midiin_callback.py
So, you are saying the output above is from the unchanged midiin_callback or from your code? If it is from your code, then please post your code here. Because I'm not able to reproduce your results with midiin_callback.py and the MIDI input devices I have.
Also, which OS are you on and which API backend are you using (JACK, ALSA, CoreMidi, WindowsMM)?
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kinga-ust
commented on August 19, 2024
This is output from unchanged midiin_callback file. The easiest way to reproduce this on my device is constantly pressing very fast one key for some time.
I use ALSA and work on Raspbian GNU/Linux 8.0 (jessie).
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SpotlightKid
commented on August 19, 2024
Do you have another MIDI interface to test with?
Is this the MIDI interface you are using?
https://www.thomann.de/de/miditech_midilink_mini.htm
The buyers' comments don't exactly fill me with confidence in the reliability of this interface.
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kinga-ust
commented on August 19, 2024
Yes, this is exactly the interface I am using and unfortunately the only I can test with for now.
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SpotlightKid
commented on August 19, 2024
I'll try to test this on a Rasberry Pi (also with Raspbian 8) tomorrow.
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kinga-ust
commented on August 19, 2024
Thank you very much for help.
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SpotlightKid
commented on August 19, 2024
Sorry, I have not been able to reproduce this.
I tested this on my own Raspberry Pi, which also has Raspbian 8 installed, with the Python 3.4 version installed from the distribution packages. I created a virtualenv and installed python-rtmidi 1.3.0 from PyPI with pip. I played the notes as quickly as I could and everything looks fine.
I suspect your MIDI interface is to blame. Can you test it with aseqdump? Run aseqdump -l to list MIDI input ports, then run aseqdum -p <port> with the port number reported for your MIDI interface and play your keyboard? Please post the output after playing some notes here.
virtualenv -p python3 rtmidi
source rtmidi/bin/activate
pip install python-rtmidi
python midiin_callback.py # download this e.g. from the github repo
DEBUG:rtmidi.midiutil:Creating MidiIn object.
Do you want to create a virtual MIDI input port? (y/N)
Available MIDI ports:
[0] Midi Through:Midi Through Port-0 14:0
[1] Xkey:Xkey MIDI 1 20:0
Select MIDI input port (Control-C to exit): 1
INFO:rtmidi.midiutil:Opening MIDI input port #1 (Xkey:Xkey MIDI 1 20:0).
Attaching MIDI input callback handler.
Entering main loop. Press Control-C to exit.
[Xkey:Xkey MIDI 1 20:0] @1555617572.892733 [176, 1, 77]
[Xkey:Xkey MIDI 1 20:0] @1555617572.892733 [176, 1, 72]
[Xkey:Xkey MIDI 1 20:0] @1555617572.892733 [176, 1, 68]
[Xkey:Xkey MIDI 1 20:0] @1555617572.892733 [176, 1, 58]
[Xkey:Xkey MIDI 1 20:0] @1555617572.892733 [176, 1, 55]
[Xkey:Xkey MIDI 1 20:0] @1555617572.892733 [176, 1, 44]
[Xkey:Xkey MIDI 1 20:0] @1555617572.892733 [176, 1, 27]
[Xkey:Xkey MIDI 1 20:0] @1555617572.892733 [176, 1, 22]
[Xkey:Xkey MIDI 1 20:0] @1555617572.892733 [176, 1, 23]
[Xkey:Xkey MIDI 1 20:0] @1555617572.892733 [176, 1, 10]
[Xkey:Xkey MIDI 1 20:0] @1555617572.892733 [176, 1, 9]
[Xkey:Xkey MIDI 1 20:0] @1555617572.892733 [176, 1, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617572.892733 [176, 64, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617572.892733 [176, 64, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617572.892733 [176, 64, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617572.892733 [176, 64, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617572.892733 [176, 64, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617574.202841 [144, 72, 101]
[Xkey:Xkey MIDI 1 20:0] @1555617574.246702 [128, 72, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617574.410570 [144, 72, 88]
[Xkey:Xkey MIDI 1 20:0] @1555617574.458187 [128, 72, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617574.610817 [144, 72, 59]
[Xkey:Xkey MIDI 1 20:0] @1555617574.674693 [128, 72, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617574.839810 [144, 72, 88]
[Xkey:Xkey MIDI 1 20:0] @1555617574.891180 [128, 72, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617575.008811 [144, 72, 29]
[Xkey:Xkey MIDI 1 20:0] @1555617575.075221 [128, 72, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617575.232823 [144, 72, 84]
[Xkey:Xkey MIDI 1 20:0] @1555617575.262937 [128, 72, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617575.424315 [144, 72, 34]
[Xkey:Xkey MIDI 1 20:0] @1555617575.454433 [128, 72, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617576.254557 [144, 72, 94]
[Xkey:Xkey MIDI 1 20:0] @1555617576.370936 [128, 72, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617576.478558 [144, 72, 97]
[Xkey:Xkey MIDI 1 20:0] @1555617576.572432 [128, 72, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617576.662572 [144, 72, 102]
[Xkey:Xkey MIDI 1 20:0] @1555617576.733934 [128, 72, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617577.867922 [144, 84, 95]
[Xkey:Xkey MIDI 1 20:0] @1555617577.958045 [128, 84, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617578.484406 [144, 84, 62]
[Xkey:Xkey MIDI 1 20:0] @1555617578.540766 [128, 84, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617578.683394 [144, 84, 106]
[Xkey:Xkey MIDI 1 20:0] @1555617578.776013 [128, 84, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617579.190025 [144, 96, 123]
[Xkey:Xkey MIDI 1 20:0] @1555617579.291410 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617579.414032 [144, 96, 113]
[Xkey:Xkey MIDI 1 20:0] @1555617579.507907 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617579.610533 [144, 96, 104]
[Xkey:Xkey MIDI 1 20:0] @1555617579.675668 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617579.794546 [144, 96, 110]
[Xkey:Xkey MIDI 1 20:0] @1555617579.880910 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617579.998531 [144, 96, 90]
[Xkey:Xkey MIDI 1 20:0] @1555617580.064901 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617580.410028 [144, 96, 93]
[Xkey:Xkey MIDI 1 20:0] @1555617580.493900 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617580.631530 [144, 96, 107]
[Xkey:Xkey MIDI 1 20:0] @1555617580.729154 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617580.818027 [144, 96, 114]
[Xkey:Xkey MIDI 1 20:0] @1555617580.884394 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617580.962016 [144, 96, 105]
[Xkey:Xkey MIDI 1 20:0] @1555617581.057143 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617581.132272 [144, 96, 116]
[Xkey:Xkey MIDI 1 20:0] @1555617581.206172 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617581.292528 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617581.377649 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617581.470271 [144, 96, 96]
[Xkey:Xkey MIDI 1 20:0] @1555617581.539142 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617581.624263 [144, 96, 119]
[Xkey:Xkey MIDI 1 20:0] @1555617581.736892 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617581.808260 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617581.895891 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617581.976013 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617582.056141 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617582.140014 [144, 96, 118]
[Xkey:Xkey MIDI 1 20:0] @1555617582.216383 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617582.300260 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617582.367883 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617582.450506 [144, 96, 114]
[Xkey:Xkey MIDI 1 20:0] @1555617582.519378 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617583.687004 [144, 96, 102]
[Xkey:Xkey MIDI 1 20:0] @1555617583.715876 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617583.834746 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617583.869870 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617583.996245 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617584.032619 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617584.126495 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617584.176615 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617584.265512 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617584.321883 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617584.398249 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617584.452118 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617584.529742 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617584.582367 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617584.659993 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617584.710113 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617584.791490 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617584.841613 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617584.921735 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617584.969365 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617585.053237 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617585.103364 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617585.185982 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617585.234857 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617585.326240 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617585.365114 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617585.460236 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617585.507853 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617585.584236 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617585.645613 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617585.733250 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617585.779612 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617585.873484 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617585.919853 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617586.017483 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617586.062612 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617586.155233 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617586.204099 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617586.301733 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617586.346855 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617586.443231 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617586.488349 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617586.588481 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617586.634848 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617586.723724 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617586.776356 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617586.860228 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617586.922846 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617587.002978 [144, 96, 125]
[Xkey:Xkey MIDI 1 20:0] @1555617587.058103 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617587.150724 [144, 96, 65]
[Xkey:Xkey MIDI 1 20:0] @1555617587.185848 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617587.287244 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617587.341102 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617587.431231 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617587.483846 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617587.581473 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617587.631599 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617587.715470 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617587.776845 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617587.868220 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617587.923354 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617588.009720 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617588.068592 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617588.157464 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617588.215087 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617588.295211 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617588.352842 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617588.454216 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617588.504330 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617588.603226 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617588.652092 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617588.753480 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617588.799833 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617588.907457 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617588.953834 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617589.051460 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617589.096581 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617589.177957 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617589.233075 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617589.325704 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617589.373334 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617589.469707 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617589.523577 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617589.619957 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617589.668830 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617589.770204 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617589.810325 [128, 96, 0]
[Xkey:Xkey MIDI 1 20:0] @1555617589.909203 [144, 96, 127]
[Xkey:Xkey MIDI 1 20:0] @1555617589.958076 [128, 96, 0]
^C
Exit.
from python-rtmidi.
kinga-ust
commented on August 19, 2024
I attach the output from aseqdump as you said it is probably my midi controller guilty for switching note and velocity.
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SpotlightKid
commented on August 19, 2024
Yes, it seems either your keyboards (unlikely) or the MIDI interface are sending garbage.
These cheap cable-integrated MIDI interfaces can be hit-and-miss and often, even if they work for "nomal" MIDI events (notes, controllers, etc.), they mess up System Exclusive messages. If you're looking not to spend too much, I'd try to buy a used, older USB audio interface with MIDI ports (and some standard MIDI cables), even if you don't plan on using the audio capabilities, you can still use its MIDI interface.
I'm closing this issue now. If you have new data that suggest that python-rmidi is to blame after all, feel free to re-open it.
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Related Issues (20)
- MidiInAlsa::initialize: error creating ALSA sequencer client object HOT 25
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- Apple Silicon macOS wheel? HOT 2
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- get_ports() method returns blank lists with Python 3.11 and ARM Macs HOT 8
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- ALSA incomplete message on Pi HOT 8
- get_ports() returns garbled text on multi-byte character port name. HOT 2
- Missing wheel for Python 3.12 HOT 2
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- pypi link to source code HOT 1
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- Error when installing via pip on CoreElec (aarch64) HOT 16
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