Using module-ladspa-sink - what LADSPA plugin exactly do I need to install?

[Doron Behar]

Sorry for the late reply :) (I'm not used to mailing lists)

On Mon, Jun 03, 2024 at 09:19:50PM -0700, Sean Greenslade wrote:
> On Mon, Jun 03, 2024 at 06:17:59PM +0300, Doron Behar wrote:
> > I found this program I'd like to use:
> > 
> > https://github.com/pulseaudio-equalizer-ladspa/equalizer
> > 
> > I managed to compile and run it, but I don't hear it makes a difference
> > in the sound. Do I need to enable the `module-ladspa-sink` module? Link:
> > 
> > https://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/User/Modules/#module-ladspa-sink
> > 
> > What makes it difficult for me to figure this out myself, is the
> > [LADSPA](http://www.ladspa.org/) link, which seems to general, because
> > this group develop many projects, or which I'm not sure which I should
> > compile as a pulseaudio plugin (some of which are available in my
> > distribution.
> > 
> > Thanks for any help in advance.
> 
> What distro of Linux are you running?
> 
> Eyeballing the Arch package for this equalizer, it looks like it needs
> the swh-plugins package for the actual LADSPA plugin itself. It might be
> named differently on your distro.

So I'm using NixOS and our `ladspaPlugins` package distributes the files
distributed by Arch Linux' `swh-plugins` package. 

> You shouldn't need to manually load any modules in pulse; this equalizer
> script seems to do all the module loading automagically.

OK, sounds promising. I'm still a bit confused how it won't output any
error if it doesn't find these plugins at all. Perhaps I'll continue to
discuss this with upstream at:

https://github.com/pulseaudio-equalizer-ladspa/equalizer/issues/58

I will reply again to this thread if I'll learn something new after
discussing there.

Thanks anyway.