I'd like to get a speaker-processor style DSP box that lets me easily enter my own FIR and IIR filter coefficients. FIR with 240 taps at fs = 48kHz or 480 taps at 96kHz would do nicely.
I'm aware of Xilica. FourAudio looks interesting but I don't see much of a US presence. I have a Lab Gruppen PLM10000q but don't know how to get into the processor. Obviously speaker manufacturers, as Fulcrum, get to do this, but how about mortals? A board-level product would be fine, too. I really appreciate any suggestions of where to look and especially any tales of direct experience.
All this is so I can do some experiments, the likely outcome of which is that I'll buy good speakers that come with settings designed by people who know what they're doing. But, as with pushing plywood through saws, the process builds deeper appreciation for what's involved. And even a blind squirrel finds a nut now and then.
As an aside, I've implemented the Gunness-Hoy spectrogram representation in R (reading the impulse response captured by ARTA). Let me know if you want a copy to play with. It's a rather preliminary (and slower than molasses) work in progress.
--Frank
