[LAD] [Ardour-Users] TAP EQ issues, revisited

Hi, There was a thread on LAD two years ago, almost exactly, pointing out the denormal problems in TAP's EQ plugins: http://linuxaudio.org/pipermail/linux-audio-dev/2005-August/013367.html Unfortunately the problem was never fixed. Many people are still having issues with 'TAP Equalizer' and 'TAP Equalizer/BW', as there are recent posts in ardour-users regarding spiralling CPU usage for DSP. I've been doing my best to debug and fix the problem, but now that I actually want to reproduce the problem, I can't! I can't reproduce the jump in CPU usage, although I suffer a loss of audio in Ardour when I have many TAP EQ's running in a session. So, I tried a few small changes to tap-plugins-0.7.0 which seemed to fix the loss of audio. If anyone can reliably reproduce the jump in CPU usage (which usually triggered by periods of silence in the middle of a recording), then please try rebuilding the TAP plugins from source, with and without my attached patch, and see if it helps. Please note, if your current tap_eq.so and tap_eqbw.so are already installed in /usr/lib/ladspa/, you may need to edit the Makefile and remove "local/" from the .so and .rdf install paths. I'm hopeful that this might cure denormal problems that some people have suffered from with these plugins for years. If this works, I will test many more plugins for the same problem and perhaps fix those, too. Thanks! -- Steven Chamberlain steven(a)pyro.eu.org