Hardware equalizer in Linux?

Rim_Frost · 05-05-2009, 12:25 PM

Im running Debian 5.0 Lenny x64 and use alsa sound.
And i was thinking if there is any hardware equalizer for the sound that can set sound effects system wide so it apply over the whole system.
If there is any, where can i get it and how do i set it up?

Thanks.

farslayer · 05-05-2009, 01:00 PM

Might want to look into Jack and LADSPA.
http://www.agnula.info/documentation...a_jack_ladspa/

Jack

JackEQ

QJackCtl - Patch Panel
.

Rim_Frost · 05-05-2009, 01:31 PM

I installed that "QJackCtl - Patch Panel" and "JackEQ".
But when i click start button in "QjackCtl" it comes up a rong message and says:

Code:

20:24:27.129 Patchbay deactivated.
20:24:27.135 Statistics reset.
20:24:27.145 ALSA connection graph change.
20:24:27.400 ALSA connection change.
20:24:33.245 Startup script...
20:24:33.246 artsshell -q terminate
20:24:33.860 Startup script terminated with exit status=256.
20:24:33.860 JACK is starting...
20:24:33.861 /usr/bin/jackd -dalsa -dhw:0 -r44100 -p1024 -n2
20:24:33.864 Could not start JACK. Sorry.
20:24:44.450 JACK was stopped with exit status=255.
20:24:44.452 Post-shutdown script...
20:24:44.452 killall jackd
jackd: ingen process avslutad
20:24:44.868 Post-shutdown script terminated with exit status=256.
20:25:25.004 Startup script...
20:25:25.004 artsshell -q terminate
20:25:25.419 Startup script terminated with exit status=256.
20:25:25.419 JACK is starting...
20:25:25.419 /usr/bin/jackd -dalsa -dhw:0 -r44100 -p1024 -n2
20:25:25.422 Could not start JACK. Sorry.
20:25:26.943 JACK was stopped successfully.
20:25:26.944 Post-shutdown script...
20:25:26.944 killall jackd
jackd: no process end
20:25:27.350 Post-shutdown script terminated with exit status=256.

What is this? How do i fix it? Sorry, im new to this.

farslayer · 05-05-2009, 03:44 PM

Jack is required for either of those other two apps to work... Jack is the back end, jackEQ is the effect, and qjackctl is a GUI to help you "patch" all the audio devices together.

Rim_Frost · 05-06-2009, 05:06 AM

How do i install Jack and setup it?
Because i have "libjack0 - Jack Audio Connection Kit (libraries)" and "libjack0.100.0-0 - Jack Audio Connection Kit (libraries)" installed.

farslayer · 05-06-2009, 09:48 AM

Code:

aptitude search jack

p   alsaplayer-jack                  - PCM player designed for ALSA (JACK output module)                                       
p   dssi-host-jack                   - An example DSSI host                                                                    
p   jack-rack                        - LADSPA effects "rack" for JACK                                                          
i   jack-tools                       - various JACK tools: plumbing, play, udp, ctl, scope, clock                              
p   jackbeat                         - a drummachine-like audio sequencer with JACK support                                    
i A jackd                            - JACK Audio Connection Kit (server and example clients)                                  
i   jackeq                           - routes and manipulates audio from/to multiple sources                                   
p   jacksum                          - computes checksums, CRCs and message digests                                            
p   liballegro4.2-plugin-jack        - JACK audio plugin for the Allegro library                                               
p   libbio2jack0                     - oss/alsa to jack porting lib - runtime files                                            
p   libbio2jack0-dev                 - oss/alsa to jack porting lib - development files                                        
p   libbjack-ocaml                   - OCaml blocking interface to jack audio connection kit                                   
p   libbjack-ocaml-dev               - OCaml blocking interface to jack audio connection kit                                   
p   libjack-dev                      - JACK Audio Connection Kit (development files)                                           
i A libjack0                         - JACK Audio Connection Kit (libraries)                                                   
i A libjack0.100.0-0                 - JACK Audio Connection Kit (libraries)                                                   
p   libjack0.100.0-dev               - JACK Audio Connection Kit (libraries)                                                   
p   libjackasyn-dev                  - Development files for libjackasyn                                                       
p   libjackasyn0                     - The Asynchrounous JACK Library                                                          
p   libwine-jack                     - Windows API implementation - JACK sound module                                          
p   pulseaudio-module-jack           - jackd modules for PulseAudio sound server                                               
p   pulseaudio-module-jack-dbg       - jackd modules for PulseAudio sound server debugging symbols                             
i   qjackctl                         - User interface for controlling the JACK sound server                                    
p   vlc-plugin-jack                  - Jack audio plugins for VLC                                                              
p   xmms2-plugin-jack                - XMMS2 - JACK output

jackd needs to be installed, it most likely already is

aptitude install jackd

jackd -d alsa & jackeq & qjackctl &

https://help.ubuntu.com/community/Ho...KConfiguration
https://help.ubuntu.com/community/Ho...CtlConnections
http://www.linuxjournal.com/article/8354
http://en.wikipedia.org/wiki/Qjackctl <- links to more instructions..

Rim_Frost · 05-06-2009, 01:59 PM

Thanks.
That was interesting to look in to.