Play MIDI files about soundfont-player

[mk-pmb]

Thank you for summarizing!

[page200]

To sum up several discussions: The only approach that works well so far (correct instruments, perfect rhythm, can play in the background) is the latest official branch of MIDI.js (named "abcjs"), except for the first seconds of the first time a song is played. That problem is described at mudcube/MIDI.js#268 (comment). Solving that seems like the most promising plan. Feel free to have a look into that.

[urobot2011]

Thanks for your help!

[urobot2011]

But when i click the 'play' button on my Kalimba-sheet-music-writer project the sound is fine (there is a little sound jitter but i don't mind that).
What I'm wondering is if it's possible to know the length of a note in advance before the 'note off' event fires. I didn't get the answer from MidiPlayerJS's official documentation.
Here is a test page for my Kalimba-sheet-music-writer project:
Test Page

[page200]

@urobot2011 Hm, I'd like to play MIDI files without jitter. And regarding note durations, I suspect that some JavaScript MIDI players don't care about matching "Note On" MIDI messages with the respective "Note Off" messages. If you don't want to "reinvent" that matching, then apps that visualize that matching (for example as piano rolls) might serve as inspiration. Tag me at https://github.com/urobot2011/Kalimba-sheet-music-writer/discussions or so if you want me to list them and some of their properties. I don't know whether MidiPlayerJS performs that matching. https://musiclab.chromeexperiments.com/Piano-Roll/ (https://github.com/googlecreativelab/chrome-music-lab/tree/master/pianoroll) uses an interval tree to rewind the song efficiently.

[urobot2011]

@page200 I looked at Color Piano and thought this might be possible with MIDI.JS.
Is this possible with MIDI.JS?

[page200]

@urobot2011 Color Piano uses MIDI.js, but probably an old branch of MIDI.js that doesn't play all instruments correctly. (Color Piano only plays the piano.) As discussed at mudcube/MIDI.js#268, it seems more promosing to fix the first seconds of the new "abcjs" branch than the entire instrument support in the old "master" branch.

[urobot2011]

@page200 my workspace

[urobot2011]

Hmm, I know this is just weird.
But is there any way to fix this?
Or, is it possible with midi.js(adc.js)?