Pitch bend sounds incorrectly when export to MIDI
Reported version
3.6
Type
Functional
Frequency
Few
Severity
S3 - Major
Reproducibility
Always
Status
closed
Regression
No
Workaround
Yes
Project
I applied a pitch bend raised 6 semitones to a note using the bend tool, and export it to an MIDI file. The result is a single semitone bend, since the default value of pitch bend sensitivity in normal software implementation is 2 semitones, but in MuseScore it's 12 semitones. (Ref.: https://musescore.org/en/node/297926)
It is confirmed that by manually adding the control change events CC 101 (0x65) = 0, CC 100 (0x64) = 0 and CC 6 = 12 to the MIDI file, it works perfectly in all software and devices.
Fix version
4.1.0
Comments
The problem also occurs with the website as well.
Song example : https://musescore.com/trevorscores/crab_rave (Synth part at bar #12 at 21")
Please add the proper RPN events for each of the 16 channels to set the pitch bend range to 12 at the beginning of the MIDI file (after the 0x79 "Reset All Controllers" events) :
Bx 65 00// Controller/chanx, RPN coarse (101), Pitch Bend RangeBx 64 00// Controller/chanx, RPN fine (100), Pitch Bend RangeBx 06 0C// Controller/chanx, Data Entry coarse, +/-12semitonesBx 26 00// Controller/chanx, Data Entry fine, +/-0centsRPN specs: http://midi.teragonaudio.com/tech/midispec/rpn.htm
Hopefully, this shouldn't be too difficult to implement.
I'm not using the app but the code seems to be there :
https://github.com/musescore/MuseScore/blob/b587e98b48b5bc0e08522f77070…
I see there is a
exportRPNsflag that needs to be set, looks like it's an export option but it's not on the website.Anyway, I don't see why this is an option, it's standard MIDI and should work with all software.
So (at least locally) there's a workaround, by setting Edit > Preferences > Export > MIDI > Export RPNs
But what do you mean by I'm not using the app?
In reply to So (at least locally) there… by Jojo-Schmitz
I'm using the website only.
I mostly search for songs on the website (ie https://musescore.com/trevorscores/crab_rave ) then I click the Download button then MIDI.
IMO, the Export RPNs option should be set to true by default in the app (so it can still be unchecked if this causes issues for some users as explained in the code) and always set to true for MIDI export from the website.
Then install MuseScore and download the score, the mscz, and export to MIDI there, with that option set.
See https://github.com/musescore/MuseScore/pull/10534
Also added to https://github.com/musescore/MuseScore/pull/9000
Fixed in branch master, commit a9f024e2c9
Fix #321074: Pitch bend sounds incorrectly when export to MIDI
Fixed in branch master, commit c43a28af55
_Merge pull request #10534 from Jojo-Schmitz/exportRPNs
[MU4] Fix #321074: Pitch bend sounds incorrectly when export to MIDI_
Not sure yet whether the fix also makes it into 4.0.2
In reply to Not sure yet whether the fix… by Jojo-Schmitz
The issue still occurs on the website today (2023-01-31)
Example with this song : https://musescore.com/user/2636861/scores/5361474
The pitch bend effect on the Halo pad track at 0:22 should cover a whole octave but only covers 2 semitones.
It renders well with the website player but is still wrong on a MIDI sequencer.
The fix is not yet released, so not yet on the website either. And even if it were, it'd affect only newly uploaded scores, as the MIDI export is done at upload time
Download the score, open in MuseScore, set the export RPNs option, export to MIDI
Automatically closed -- issue fixed for 2 weeks with no activity.