Unison collisions fail in MS-created MP3's
OS: macOS 10.15, Arch.: x86_64, MuseScore version (64-bit): 3.4.2.25137, revision: 148e43f
For the enclosed (simplest test case) score, "Export to MP3". The whole-note is cut off (clipped) by the quarter note, a "unison collision clipping". This problem was fixed for live playback from the score way back in MuseScore 2, but persists when MP3 output is produced, and, since the .com site works via MP3 production, all such scores posted to the site fail unless all unison collisions are located and hand-tweaked as they were before that fix (but that is now much more difficult because of the difference in behavior).
Apparently, some patches were posted and pulled/unpatched and maybe lost. @mirabilos (who was responsible for the patches) describes his understanding of the chronology on the discussion linked above.
| Attachment | Size |
|---|---|
| Unison_clash_test.mscz | 3.73 KB |
Comments
If it works for playback but not for MP3 export, then it probably has nothing to do with a PR being merged or not merged or revert at the wrong time. More likely just a matter of some subsequent (since when it was last know to work) having broken the code on the export side. Some of the code is of course shared between playback and export, but there are necessarily differences as well. Here's a case where it would be useful to know the last release in which MP3 export worked.
Sergei Shchetnikov experimented with other audio formats, and found that all except .mid fail in the same way.
Well, .mid is not really an audio format, guess that's why
In reply to Well, .mid is not really an… by Jojo-Schmitz
Indeed, surely true, but that is his report (and it is important that midi works!).
In reply to Indeed, surely true, but… by [DELETED] 1831606
Yes, it means that the functionality is there, just the export is broken again. In the MIDI, note 67 is struck, immediately off’d and then struck again, then continues to sound.
Another user has posted a complaint to .com observing that "the score doesn't work when posted.". I pointed him back here, but that's no answer.
Came up again: https://musescore.com/groups/improving-musescore-com/discuss/5084153
In reply to Came up again: https:/… by [DELETED] 1831606
And again: https://musescore.com/groups/improving-musescore-com/discuss/5085856
This is fixed in 3.6
Automatically closed -- issue fixed for 2 weeks with no activity.