* Federico Lopez <fede2001(a)hotmail.com> [2013-04-16 00:42]:
Hi,
In my work as Front of House sound engineer I am searching for a
good set to tools to run an audio crossover all in linux, I would
like to hear from your experience in that field and will be glad to
hear comments for this attempt.
Heres is my approach:
For a flexible crossover do you need: crossover filters, delay for
outputs (to align components), multiple zone handling, filters for
EQ, allpass filters to deal with phase, limiters to protect the
speakers.
Here are some suggest apps :
Crossover Filters
zita-lrx (Fons Adriaensen) Command line crossover with
Linkwitz–Riley and Butterworth filters, gain and delay for each
band, up to 16 chanels, but you can run various instances to make
complex zones.
Filters
You can make your own standalone filters with FAUST, online examples
include second order bandpass, lowcut.
Bandpass filters of LADSPA in JackRack
Allpass filters:
4x4 pole allpass filter, In conjunction with JackRack can be used to
fix Phase response.
Limiters:
zita-dpl1 (Fons Adriaensen) Look-ahead digital peak limiter.
Look at Pd (
http://puredata.org/) which can implement all these
filters and delays and limiters, though possibly not at the
same ready-made quality level than Fons' amazing work.
P
My goal is to finish this post:
http://opensourcefoh.meteor.com/posts/qJjYCPJwQohgPutt4
Thanks in advance,
Federico Lopez
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