[SoX-users] example ladspa

[D. S. <new...@gm...>]

Are there any sox ladspa examples that anyone has handy?

I have these ladspa plugins in /usr/local/lib/ladspa/ -
  amp.so  delay.so  filter.so  noise.so  sine.so.

How do I use, say, the ladspa  delay plugin, with sox?  (Or is the
ladspa delay example even usable for sox?) Tried:

   sox in.wav out.wav ladspa delay delay

   sox in.wav out.wav ladspa delay.so delay

I've tried delay, delay.so, and /usr/local/lib/ladspa/delay.so in the
"module" postion there, so far no go. I get "sox ladspa: could not
open LADSPA plugin delay" back each time. I've also tried delay_5s as
the plugin name (after the ladspa + module part).