Here are the LADSPA plugins I use in my software DSP approach to active loudspeakers. I mostly use them within ecasound, but they should work just as well in any other LADSPA host.
You can download the source code here. Install with the usual
make; make install. Continue reading →
I’ve just finished building a pair of Linkwitz Labs’ LX521 loudspeakers. They’re everything I could want: 4-way, dipole radiation, with active crossover and eq. They sound amazing. Previously the best speakers I had heard were the Pluto 2.1.
What I’ve done differently is to implement the xover/eq with a digital processor, which runs in software on a small pc. I did this using only open-source, free (as in beer) software, plus a bit of code I wrote myself. Continue reading →
I play most of my music through a Logitech (née SlimDevices) Squeezebox. It’s a networked music player that pulls audio files from a server running on a separate PC or NAS. The player runs embedded linux and the server is open-source, so this system is eminently hackable.
By messing with the contents of custom-convert.conf on the server (it lives in /etc/squeezeboxserver on my Ubuntu machine) you can manipulate the audio signal before it goes to the player. A popular use for this is to get BruteFIR to do “digital room correction”. Continue reading →