On Sun, 4 Sep 2005 14:30:10 -0500, Reuben Martin <reuben.m@xxxxxxxxx> wrote: > I need to be able to pipe stereo audio through a notch filter so that > I can adjust it while listening and analyzing the effects it is > having. Unfortunately I cannot find a way to do this. Here's why: > > - The only LADSPA notch filter I can find is "Mag's notch filter" > (notch_iir_1894.so) I don't know how 'sharp' you need the notch to be, but maybe you can try the TAP EQ/BW with a small bandwidth setting. Just a random idea. > -Jack Rack works great with this plugin, except when I change the > number of stages in the interface, the change is only applied to one > channel. (the other controls are applied to both channels) > > -AlsaModularSynth immediately segfaults when trying to load this > particular plugin > > -Ardour will not work with this either. The controls don't do what > they are supposed and al I can accomplish with it is some sort of > wacky low pass filter. (how this is accomplished with a notch filter > plugin is beyond me...) > > > > So... What else is there? these are the only programs I know of that I > can pipe audio through very easily. (please don't suggest Pd, I've > never gotten it to compile correctly) Anybody else have similar > problems with this plugin? I tried the plugin in Aqualung, which is a music player program supporting LADSPA plugins (http://aqualung.sf.net). It seemed to be working alright. If you decide to try it, get the latest source from http://aqualung.sf.net/aqualung-cvs.tar.gz and issue an 'sh autogen.sh' before the usual ./configure, make, make install stuff. If you are able to compile Ardour, the needed libs are almost certainly present on your machine. As this is just a music player, you can't pipe audio through it (since there is no input), but you can export the audio to a track and play that. I'm not suggesting that this is an acceptable end solution, but maybe worth trying out to determine whether there is a problem with the notch plugin or the other hosts instead. Tom
