[MacOS] Inputting notes results in a cracking noise

• Dec 22, 2018 - 20:43
Reported version
P0 - Critical
S2 - Critical

When inputting notes (through computer or piano) into any stave of a score, the end of the note cracks (on input, not during playback)

This has happened in:
- String Quartet from template
- Concert Band from template
- Concert Orchestra, edited from template

Does not happen in:
- Assorted octet (no template)
- Grand Staff from template


Thanks for the report. What OS are you using? And which version of Musescore?

Popping and crackling can happen because of low amounts of free RAM and/or a lack of system resources. A restart can often clear this issue up.

If it's consistent, please say.

In reply to by t.s.m

This is the generic "Mac stuttering/crackling problem", which I and some others suffer, but not reproducible enough for the staff to investigate it. My observations indicate that it happens only if particular notes in a particular soundfont have not been played in "a long time", e.g., as when entering them, or opening and playing a new score.

In reply to by BSG

I do know what you are talking about and experienced it in 2.3.2, but this is different (though possibly an extension?) This is every note on every instrument in any score I create from a template, and is easily replicable on my end. Is it still a mac-only issue?

Edit: Also, unlike the old issue this is never actually during playback, but when inputting and editing the score outside of playback mode

Edit 2: also @BSG this is irrespective of soundfont as well

In reply to by t.s.m

Yes, it's on every instrument and soundfont. It only goes away when you play the excerpt through a first time. My guess is that the computer can't keep up with the sound unless the soundfont pages have already been paged in. My Mac is 6 years old.

Same issue here since 3.0. Only when in input mode, not playback. This is really annoying :/ Running a 2013 MBP with i7 and 16G of ram.

I finally found the stable scenario to reproduce the noise.

  1. New score with one instrument
  2. Add any number of any (e.g. 8th) notes
  3. Hold Space (quick play/pause)
    Result: no noise

  4. Add any instrument

  5. Hold Space
    Result: the noise is here

  6. Remove the new instrument

  7. Hold pause
    Result: no noise again

So, the reason is several instruments processing. I will dive deeper into it.