Envelope Control Points

Audacity envelopes provide a useful, non-destructive way to modify the volume of the audio, but are rather fiddly to use. Due to the lack of numeric input, it’s virtually impossible to set precise values manually.

This plug-in provides a simple way to add envelope control points with precise values.

Download

Installation:

Installation is in the usual way. Use the Nyquist Plug-in Installer to install EnvelopePoint.ny, then enable the plug-in using the Plug-in Manager.

Add a single control point:

To add a single control point:

  • Click on the waveform at the position where the envelope point is required.
  • Launch the “Envelope Point…” plug-in from the Tools menu.
  • Set the required value, and click “OK”.

Add a pair of control points:

To add a pair of control points:

  • Click and drag on the waveform to create a selection.
  • Launch the “Envelope Point…” plug-in from the Tools menu.
  • Set the required value, and click “OK”.

Example:

Fade out (non-destructively) audio from 2 seconds to 4 seconds, and fade back in from 4 seconds to 5 seconds:

Because we want the audio to start and end at normal volume, we begin by selecting the entire region from 2 to 5 seconds

Select region from 2 to 5 seconds

Then add control points with value 1.0

Envelope Point plug-in with value set to 1.0
Control points added at start and end of selection

Click on the track at 4 seconds

Cursor position at 4 seconds

and finally add a control point with value 0

Envelope Point plug-in with value set to 0.0
Envelope point value 0.0 added.

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