Bug Report: Unwritten C Natural Plays In Playback Export
For the past few weeks, exporting the audio of a MuseScore file will have the horns play a C natural note in a certain part. The C natural is not specified in the score notation, and neither is it heard in the MuseScore Studio preview.
The strange part is if I isolate the horns in the excerpt, the passage plays fine.
In the preview as it should sound, the horns sound: "C#, A, C#, A, C#, A, B"
But in the export with the full orchestra, they seem to sound: "C, C#, A, C#, A, C#, B"
...although I think the 2nd horn is playing the wrong note as there are two horns playing.
Version info below
OS: Windows 10 Version 2009 or later, Arch.: x86_64, MuseScore Studio version (64-bit): 4.3.1-241490900, revision: 026c26b
I used the latest Development build and encountered the same problem
OS: Windows 10 Version 2009 or later, Arch.: x86_64, MuseScore Studio version (64-bit): 4.3.2-241630506, revision: e699c5a
How to reproduce:
1. Open the score
2. Playback the audio, no C natural is heard.
3. Export the audio and play the file, a slight C natural is heard from the horns.
An excerpt of the score is attached (and displayed) for further troubleshooting. The full score is also attached (but hidden) for troubleshooting (The bug is at measure 34).
If the fix is not soon, I will use Audacity to work around the bug.
Comments
Recorded sounds do not mix the same way live sounds do. I've had situations where a certain combination of flute and oboe caused a strange added note. I had to change one note in the oboe part to make it go away.
I can't say that I hear a C natural in this mp3. But you be the judge.
In reply to Recorded sounds do not mix… by bobjp
I think you are right how the sounds mix. The strange part is that the C natural doesn't show in the preview, or when I export the horns and rest of the orchestra separately and recombine them.
I still hear the C natural in the horns as before. (It's between the 0:02 and 0:03 mark). I think what is happening in the export is that the horn is glissing from B to C, to C#, rather than from B to C#. My other work around could be to mute those notes for the horn so the faulty one doesn't sound, which I will try later.
I have attached files comparing the specific excerpt.
In reply to I think you are right. The… by karolcpm
Some things you might try.
Slow your two measures down to 20 bpm and solo the horns. Make sure they are the right notes. mixdown and see if the right notes are played. If so than you need to look elsewhere. Uncheck the solos and mute the timpani. I hear a little something off at this point. I muted the instruments that have a D (making a 7th chord) and things seemed better. Hard for me to tell.
I have also noticed that there can be differences between playback and mixdown. That doesn't help any. But you can go through and eliminate various instruments to maybe find what is causing the problem.
If it is an overtone mix up, that might not be possible to recreate on a different system.
In reply to Some things you might try… by bobjp
Thanks for the tips. I actually already did some testing and found that the timpani and horns for some reason don't mix well. I think will work the issue with Audacity.
In reply to Thanks for the tips! I… by karolcpm
Perhaps try a little different notation for the timpani. This may not be the look you want, but I think the playback is more dramatic.
![Screenshot 2024-06-13 083841.png]( "Screenshot 2024-06-13 083841.png")
In reply to Perhaps try a little… by bobjp
The playback is fine (and I think specifying an ff for the next measure is a good idea), it's just that gliss from one of the horns that I find problematic as those were never intentional.