LMMS / LMMS/lmms

StereoEnhancer changes the amplitude of the sound

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bug core
Dominant language
C++
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Description

The stereo enhancer alters the volume of the left or the right channel when stereo seperating. This is a pretty big bug, considering a lot of users use stereo widening in their productions.
A test LMMS project: http://lmms.sourceforge.net/lsp/index.php?action=show&file=5552
Listen to the file: http://goo.gl/hQtyl4
How the file looks in audacity:
![the bug](https://cloud.githubusercontent.com/assets/6282045/3262731/13966190-f269-11e3-805c-dc9d4f8e5e10.PNG)

Contributor guide

No contributing guide indexed for this repository

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 with the linked LMMS project and audio example, and compare the StereoEnhancer output with the Audacity screenshot to reproduce the channel-volume change. Locate the StereoEnhancer implementation and its existing tests or audio-processing entry point; done means stereo separation no longer changes the left or right channel amplitude.

Written by the indexing model from the issue text.

Assessment

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

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