Proposal Vertical Scale GUI Improvements

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Revision as of 17:02, 26 November 2011 by Edgar (talk | contribs) (typos)
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Proposal pages help us get from feature requests into actual plans. This page is a proposal to add Left and Right channel labelling in the vertical scale of a stereo track to clearly identify the channels in the waveform.
Proposal pages are used on an ongoing basis by the Audacity development team and are open to edits from visitors to the wiki. They are a good way to get community feedback on a proposal.

  • Note: Proposals for Google Summer of Code projects are significantly different in structure, are submitted via Google's web app and may or may not have a corresponding proposal page.

The Problem

The Audacity Meter Toolbar clearly labels the left and right channels with simple L & R labels, however the Audacity waveform is not so clearly labelled meaning that the user must infer the waveform channels from the labelling on the meters or work on the assumption that we are using the recording industry "standard" of left above right. This can create confusion which we can avoid with simple labelling.

Proposed Feature

For Stereo tracks upgrade the Vertical Scale to include simple L and R labels

Developer/QA Backing

Peter Sampson - I favour Option 1 (vote +1) or Option 3 (vote +0.75)

Use Cases

  • User may not make the connection between the meter labelling and the diplayed stereo wavform.
  • User has elected to use vertical metering in which case there is no meters/waveform correlation.
  • User may be unaware of the industry (unwritten) convention that left channel is on top in a stereo pair.


Three alternative possibilities are shown in the GUI Examples below.

Option 1

  • Place the L & R labels to the left of the 0.0 in the Vertical Scale
  • This would require a small horizontal expansion to the Vertical Scale box and places the L & R labels to the left of the 0.0 in the Vertical Scale
  • This will cost a little of the waveform screen real estate but at most this should be around 0.2 seconds at normal zoom level

Option 2

  • Replace the 0.0 numbering in the Vertical Scale with a single digit 0
  • The L & R labels can then be placed to the left of the 0
  • This requires no expansion of the vertical scale

Option 3

  • The L & R labels to be displayed in a large gray font underlaying the black 0.0 in the vertical scale
  • This requires no expansion of the vertical scale

GUI Examples

Option 1

Vertical Scale labelled L&R - expanded.PNG

Option 2

Vertical Scale labelled L&R - not expanded.PNG Note: the red circles are not intended as part of the proposed GUI display, they are there merely to identify the labels.

Option 3

Vertical Scale labelled L&R - super-imposed.PNG

Previous Feature Requests relating to this proposal

This proposal has been created directly fom a discussion thread on the Forum section "Adding Features to Audacity". It has not been transferred to the Pending Feature Requests page in the Wiki. See this Forum thread.