Stereo-Mono separation of an audio track

Hi all,

I would like to configure an audio track like this:

  • Mono for frequencies < 200 Hz
  • Stereo for frequencies > 200 Hz.

Is there a plugin to do this?
[Ardour 8.1 on Linux]
Thank you,
a.

I don’t know if there is a plugin labeled specifically with that feature, but you can convert to mid-side, and reduce low frequencies in the side channel with whatever EQ plugin you like, possibly increasing slightly the low frequencies in the mid channel to compensate if needed to maintain balanced sound.

These are concepts I don’t know… :slight_smile:
Any links explaining how it works?
Thank you,
a.

Blue Lab Stereo Width: BlueLab Audio Plugins : BlueLab : Free Download, Borrow, and Streaming : Internet Archive
MONSTR: MONSTR | White Elephant Audio

I’d say the easiest way is to use the “Parametric Equalizer x16 MidSide” from the LSP plugin suite. Just keep sure to select the correct filter list in the (orange) marked drop-down list (“Filters Side 0-7”) and then adding a low-pass filter at 200Hz there would be an example solution to your question.

This is a link from izotope, so has a pretty good introduction to how you would use M-S with plugins:
https://www.izotope.com/en/learn/what-is-midside-processing.html

The readme says “Currently only macOS is supported.”, but I compiled and am using it without problems on Linux.