Hard Limiter not available while Editing Chains...

… why not?

Because currently only built in effects and Nyquist plug-ins are supported in Chains.

Um… if it’s neither “built-in” nor Nyquist, then what is it? There is a third kind?

It’s a LADSPA plug-in: http://www.ladspa.org/
There are also VST plug-ins (mostly Windows) and Audio Units (AU) plug-ins (Mac only).

The “Plug-ins and Libraries” page on the main Audacity web site says a bit about different plug-in types: http://audacityteam.org/download/plugins

For detailed information, including descriptions of all effects that are shipped as standard, see the Effects section in the manual: http://manual.audacityteam.org/o/man/effect_menu.html


I see Noise Removal is available for chains, but the parameters are not listed. I Have not tried It in a chain yet. It also has that frst step which is dependent on selection. I am not sure what to expect if I try it.

  • If a Noise Profile exists, that Noise Profile will be used.
  • If a Noise Profile does not exist:
  • If the Chain is applied to files, the first file (all of it) is used to create the Noise Profile.
    • If the Chain is applied to the current project, the current Selection is used to create the Noise Profile.

Try this here.

I’ve updated the alpha 2.0.6 documentation, the Noise Removal Page, with this - and added a link back to that from the Chains page.