Glitches in playback audio

• Jun 5, 2017 - 00:25
Reported version
S4 - Minor

After I updated to MuseScore 2.1 I noticed playback glitches in certain scores and the issue seems to be more pronounced in faster or thicker parts of scores. These glitches do not occur in exported audio from the same scores.

I have reinstalled all soundfonts and MuseScore itself, yet the issue remains. Before this point I had used GeneralUserGS, TimbresOfHeaven, and SalamanderPianoV3 soundfonts with no issues for well over a year.

The glitches always occur at the same points in the same scores in the same ways. I think the issue may be related to the soundfonts, as switching the soundfont used seems to solve the problem in certain cases, but I'm not entirely sure. The most distracting glitches occur while using the SalamanderPianoV3 soundfont, where frequently notes are missed out and a strange reverb plays instead in fast passages. While using GeneralUserGS there are frequent clicks on certain scores at specific note changes. I haven't noticed any glitches that seem to be linked to TimbresOfHeaven so far. I will reiterate that all soundfonts were working perfectly until the update.

While I can work around it, this is a major issue for me as arranging music on MuseScore forms the main part of my meagre income while at university, and the inability to use the soundfont setup that works best for me really hampers my productivity.

Thanks for your help.


These are the two scores with the most noticeable glitches.

In Farmer Refuted, Seabury uses the violin from TimbresOfHeaven, Hamilton uses the violin from GeneralUserGS, and the piano part uses SalamanderPianoV3. The only glitches are in the piano part. Two notable glitch spots are bar 8 and bars 89-95.

In The Guardian's Song, all instruments are from GeneralUserGS apart from the piano which is SalamanderPianoV3. In this score there are the clicks, but no piano glitches, particularly in bar 6 on quaver beats 1, 4, 5, 6, 7, 8.

Attachment Size
Farmer Refuted.mscz 25.09 KB
The Guardian's Song.mscz 25.03 KB
Title Glitches in audio during playback after 2.1 update - possibly soundfont related Glitches in playback audio (possibly soundfont related)

For this post, I'm just concentrating on Salamander:

  1. Open attached score (produced in 2.2.1).
  2. 'View'>'Synthesiser'>'Zerberus'>'Add'.
  3. Choose 'SalamanderGrandPianoV3Retuned.sfz'.
  4. 'View'>'Mixer'.
  5. Choose 'SalamanderGrandPianoV3Retuned' (if not selected).
  6. Play.

Result: The sound struggles.

Note: Though it doesn't seem to sound as bad in comparison (might depend on the system), exported audio is also affected.

Using MuseScore 2.2.1, 2.3 Nightly Build 9aa4bb2 and 3.0 Nightly Build a70b7fd - Mac 10.11.6.

Chenlung, could you please check the case with last 2.3 Beta? I've made number of fixes for Zerberus and "out of voices" issue is one of them.

I have experienced something similar also, but with the default MuseScore Choral voices. If two basses sing the same note at the same time, a really weird reverb effect is created, which throws off the sound quite a ways... annoying, but not critical to composition or anything. Score attached.

Attachment Size
Evening Prayer.mscz 26.4 KB

It's an unfortunate fact of life in the audio world that playing the exact same waveform twice at the same time will produce such artifacts. Workaround is to silence or alter one (different dynamic, different tuning, different start time, etc) so they aren't literally identical.

I don't think that's the same issue, though. In the future, better to ask for help in the forum.