musescore / musescore/MuseScore

[MU4 Issue] Playback of shared noteheads is louder than single noteheads

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Dominant language
C++
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Description

Describe the bug

Listen to the short guitar excerpt in the attached MS3 file. Notice the shared noteheads and the fact that the volume is consistent throughout.
shared_notehead_playback.zip

Now, Play back the same file in MS4.

RESULT: The volume is inconsistent. It sounds as if it is louder on the shared noteheads then diminishes on the single notes following them.

Expected behavior

The volume should be smooth and consistent, as it was in MS3.

Platform information

OS: Linux Mint 20.1, Arch.: x86_64, MuseScore version (64-bit): 4.0.0-223630304, revision: github-musescore-musescore-3f9b94d

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by opening the attached shared_notehead_playback.zip and comparing playback of the excerpt in MuseScore 3 and MuseScore 4, focusing on shared versus single noteheads. Trace the playback path responsible for the differing volume, and consider the issue complete when the excerpt plays with smooth, consistent volume in MuseScore 4.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
audio-video-rtc, desktop
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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