Re: [LAU] Console based software EQ for jack

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To: Stefan Stefanov <selectany@...>
Cc: <linux-audio-user@...>
Date: Thursday, January 17, 2013 - 10:30 am

Hello Stefan!
Ecasound's basic concept is chains. A chain looks like this:
input -> possible processing options -> output
So you can use jack intput and output:
ecasound -f:16,2,44100 -i jack_multi,mpd:out1,mpd:out2 -o \
jack_multi,system:playback_1,system:playback_2
At the end of this line you can add effects. For example a filter. You can
use LADSPA unique IDs or the labels. I prefer IDs, since I always forget upper
and lower case letters. So the GLAME Highpass IIR filter (label: highpass_iir
and ID 1890). It has two parameter cutoff and poles/stages. You can find that
out with analyseplugin from the basic ladspa suite or look it up in your
favourite graphic ladspa host. So at the end of the ecasound line we have:
-eli:1890,50,2
or
-el:highpass_iir,50,2
Adds a highpass filter with 50Hz cutoff frequency and two stages/poles.
My favourite EQ is still Fons Adriaenson's 4-band parametric EQ (1970). I
think the package is called 4-band parametric filter (or just filter). It has
a lot of options, you can try them in your favourite graphical application
first and then copy all the values, that you found. probably easiest for you.
If you need more help ask. - one last note: the -f:16,2,44100 is the
ecasound audio formation option, see the manpage. It's
bitrate,number-of-channels,samplerate. So this is CD-quality. Adapt to your
needs.
Warmly yours
Julien

----------------------------------------
http://juliencoder.de/nama/music.html
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Messages in current thread:
[LAU] Console based software EQ for jack, Stefan Stefanov, (Wed Jan 16, 3:47 pm)
Re: [LAU] Console based software EQ for jack, Arnold Krille, (Thu Jan 17, 8:40 pm)
Re: [LAU] Console based software EQ for jack, Stefan Stefanov, (Thu Jan 17, 8:55 pm)
Re: [LAU] Console based software EQ for jack, Fons Adriaensen, (Thu Jan 17, 11:36 pm)
Re: [LAU] Console based software EQ for jack, Ralf Mardorf, (Fri Jan 18, 12:05 am)
Re: [LAU] Console based software EQ for jack, Julien Claassen, (Wed Jan 16, 11:28 pm)
Re: [LAU] Console based software EQ for jack, Stefan Stefanov, (Thu Jan 17, 10:13 am)
Re: [LAU] Console based software EQ for jack, Julien Claassen, (Thu Jan 17, 10:30 am)
Re: [LAU] Console based software EQ for jack, Stefan Stefanov, (Thu Jan 17, 8:51 pm)
Re: [LAU] Console based software EQ for jack, Patrick Shirkey, (Thu Jan 17, 8:57 pm)
Re: [LAU] Console based software EQ for jack, Stefan Stefanov, (Thu Jan 17, 8:59 pm)
Re: [LAU] Console based software EQ for jack, Ralf Mardorf, (Thu Jan 17, 9:14 pm)
Re: [LAU] Console based software EQ for jack, Julien Claassen, (Thu Jan 17, 9:06 pm)
Re: [LAU] Console based software EQ for jack, Len Ovens, (Wed Jan 16, 9:45 pm)