Rectifying a signal

Audacity 2.1.0


I have an audio signal of which I would like to retrieve just the amplitude in a kind as if I would rectify the signal to a half wave and then send this to a low pass filter. I’m just interested in the peak amplitude envelope.
How can I achieve this?


Christoph

There’s a rectify plugin for Audacity here … https://forum.audacityteam.org/t/rectivert-rectification-and-inversion/23759/1
(It does full & half-wave rectification)