[SoX-users] ladpsa plugins with more than one audio input

[Peter P. <pet...@fa...>]

Hi list,

I tried to use Sox's ladspa effect, and am getting the message
	sox FAIL ladspa: can't use a plugin with more than one audio input port
which corresponds with the manpage of SoX v14.4.1 telling me that 
	Only plugins with at most one audio input and one audio output port can be used.
What could be a good way to determine which ladspa plugins lie within
that restriction, other than trial and error?

Is there a specific reason why only plugins with at most one audio input
and one audio output port are supported? Possibly because otherwise
routing might become ambiguous?

Thank you for any ideas,

cheers, Peter