[LAU] Audio Crossover in Linux

[Peter P.]

* Federico Lopez <fede2001 at 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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