Hello,
for the first time I’m finally mixing and mastering my pieces. I’m using TAP equalizer as equalization plugin in the pre-fader area, one for each instrument. Using ardour 2.1 I’m experiencing playback problems: when I use more than three ladspa TAP equalizer, from time to time instruments don’t play at all. Especially if I copy and paste equalization settings between let’s say two guitars. Could be this a ladspa problem, or ardour one?
Thanks!
I’ve been having a similar problem. On my system it didn’t seem to be related strictly to TAP plugins but was more of an issue when I mixed TAP plugins with other plugins - i.e. I might have an swh equalizer on one track, and then if I added TAP plugins to other tracks I would eventually lose audio or get extremely high CPU usage during playback.
I uninstalled the rpms for my plugins and built them from source and, so far, I have not had a recurrence of this problem. My system is Mandriva 2008 on an Anthlon. What’s yours?
Hi, thanks for the quick answer
My system is an intel core duo, fedora core 7. I’m trying to follow your path - I’ll let you know if it works!
It does! Maybe the compiled plugins aren’t optimized for a specific CPU and cause an excessive load, I’ve seen the makefiles contain hard optimizations (-O3 and -march), I think that was the main difference!
Thanks 
Great stuff! I do know when I compiled the swh-plugins I got a lot of warnings about certain things being non-portable, so perhaps your theory is correct. Glad it’s sorted now.
as a new ardour user i found out, that on my machine (amd 5200 dual core) and played around with the O3 params, as without it was possible to run the EQs correctly on ardour. i also posted this to tom szilagyi,
as he has no new computer and it works with older ones.
you have to build it new, so if you edit the makefile, just add
-fno-strict-aliasing
to the compiler options and it should work.
I’ve got the same problem with plugins that jop and DrG had. I’m with Ardour 2.8 on Ubuntu Jaunty, high cpu usage and regions not being played correctly. I’ll try to compile from source, hope it helps me too! But do I have to compile all plugins or just the TAP plugins to solve the issue?
Just compiled the tap plugins with no errors… but the issue is still there! Anyone can help?
Assuming you did follow beaglebones advice to modify the Makefile and add -fno-strict-aliasing to the CFLAGS (and I guess there’s no guarantee it works anyway) there’s noting much to do unless Tom finds the time to fix the code. You just have to find other plugins that work.
Thanks, I didn’t do it now it works!!
I had all kinds of problems with the TAP EQ plugins. I resolved my issue by avoiding them. Stick with the Steve Harris plugins!!! Multiband EQ works like a charm!!
“Stick with the Steve Harris plugins!!! Multiband EQ works like a charm!!”
Hehe, not for me it doesn’t. On my system it causes Ardour to lose its connection to JACK. It’s the only plugin I have that does that.
Fons Adriaensen’s “FIL” 4-band parametric filter is one of my favorites…very stable, flexible, and sounds great: http://www.kokkinizita.net/linuxaudio/ladspa/index.html
I´m also a fan of the N-band parametric EQ´s. Wonderful, and stable
one other problem occured to me was, that the plugin bypass is not a real bypass, … at least you hear a significant change in the sound if you delete the plugin bypassed from your channel… guess this happened with some eqs i cant really remember… dont know if this is a general problem…