[LAU] ecasound + jack

Julien Claassen julien at c-lab.de
Fri Nov 16 07:34:07 EST 2007


Hi Mark!
  Your ecasound seems to be without jack_support.
  What I do (and I only use ecasound WITH JACK)
  1. start jack
 2. start ecasound like this:
ecasound -B:rtlowlatency -b 64 -r 30 -c -a:1 -i jack -o some.wav
  3. Launch engine:
ecasound> engine-launch
  4. change console and use jack_connect:
jack_connect alsa_pcm:capture_1 ecasound:in_1
jack_connect alsa_pcm:capture_2 ecasound:in_2
  5. start recording:
ecasound> t
  Note: The options upto and include -r are some realtime options very 
handsome to have.
  What I mostly find much more useful is:
ecasound [realtime options] -c -a;1 -i jack -o some.wav -a:2 -i null 
-pn:metronome,120 -a:2 -o jack_alsa
  Note: I use the seperate -a:2 -o jack_alsa because I would end up like this:
ecasound [realtime options] -c -a:1 -i jack -o sometrack.wav -a:2 -i null 
-pn:metronome,120 -a:3 -i monitor.wav -a:4 -i other_track.wav ... -a:2,3,4,... 
-o jack_alsa
  Additional note: I like the clicktrack ladspa-plugin much more than 
ecasound's metronome effect-preset (-pn = preset-name)
  So youcould do:
cd /usr/local/share/ecasound (or whereever)
vim effect_presets
[add the following]
met = -eli:1769,%1,0.6,0.5 -ppn:bpm \
        -ppl:44 -ppd:120 -ppu:244 -pd:click_track

Now you can use (instead of -pn:metronome,120):
-pn:met,120
  If there's more, e.g. editing/fx-processing, just ask.
  Kindest regards
       Julien

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