HOWTO: PulseAudio Fixes & System-Wide Equalizer Support

[sbersier]

@psyke83 It work but only for one audio device. I have two devices - speakers and headset. Is it possible for other device to use equalizer? This is the situation now:


@sbersier It work but interface did not load previous selected values.

Thank you both for the efforts.

Yes, indeed I have to change this. It was a first move.
The list of things to do:
1) Make the GUI interface read the .equalizerrc file (which contains the settings) at launch
2) Make a setup.sh script in order to install everything in a more simple way
3) Make the GUI (maybe) a bit more sexy... For example by adding a possibility of loading (user) predefined settings - headphones, speaker, movie, rock,...

Regards.

[sbersier]

@psyke83 It work but only for one audio device. I have two devices - speakers and headset. Is it possible for other device to use equalizer? This is the situation now:


@sbersier It work but interface did not load previous selected values.

Thank you both for the efforts.

OK. I've modified the java code in order to load existing settings at launch.
You just have to delete the $HOME/.equalizerrc and replace the previous equalizer.java by the new one (on the same post: http://ubuntuforums.org/showpost.php...postcount=1527 ).
Then compile it the same way as before.
Regards.

[tipiglen]

Thanks for all that effort. Seems to work, but I can only get it up via terminal. Any idea how it might be called from a menu item?

Thanks in advance
ed
(listening to Horace Silver)

[sbersier]

Thanks for all that effort. Seems to work, but I can only get it up via terminal. Any idea how it might be called from a menu item?

Thanks in advance
ed
(listening to Horace Silver)

Sorry, for the moment I don't see how... Indeed, it would be much more practical! If anyone has an idea he/she's welcome.
Regards.

[tipiglen]

OK, I've done it:

1, make a script and save it as 'loadequalizer' wherever you want.
I saved it in my /home/ed/bin directory.

#!/bin/sh

# NEED_SYMLINK

# this shell script has to be named "loadequalizer" to 
# launch Equalizer by way of /usr/local/bin symlink

java equalizer & "$@"

2. (as root) make a symbolic link (to wherever you've saved the wee script)

cd /usr/local/bin
ln -s /home/ed/bin/loadequalizer equalizer

3. Quit being root (for safety's sake)

4. in the main GUI, go to programs>system>main menu
and choose sound & Video
Make a new item with command: 'equalizer %u'

That should do it. Works for me

[sbersier]

OK, I've done it:

1, make a script and save it as 'loadequalizer' wherever you want.
I saved it in my /home/ed/bin directory.

#!/bin/sh

# NEED_SYMLINK

# this shell script has to be named "loadequalizer" to 
# launch Equalizer by way of /usr/local/bin symlink

java equalizer & "$@"

2. (as root) make a symbolic link (to wherever you've saved the wee script)

cd /usr/local/bin
ln -s /home/ed/bin/loadequalizer equalizer

3. Quit being root (for safety's sake)

4. in the main GUI, go to programs>system>main menu
and choose sound & Video
Make a new item with command: 'equalizer %u'

That should do it. Works for me

Hello,
I followed carefully your procedure (for 3-4 times). Unfortunately, for me it doesn't work.
I don't know why... In fact, the point is that I can't execute the result of 'javac xxx.java' (let's call it 'xxx') with the 'java xxx' command when I issue it from a different directory than the one containing the 'xxx*.class' classes. Weird... I can show you what I get:


steph@steph-desktop:/usr/local/bin$ sudo ln -s /home/steph/bin/EQUALIZER/loadequalizer equalizer
steph@steph-desktop:/usr/local/bin$ ls -l equalizer
lrwxrwxrwx 1 root root 39 2009-11-01 21:00 equalizer -> /home/steph/bin/EQUALIZER/loadequalizer
(so the link exists and is executable)
steph@steph-desktop:/usr/local/bin$ cd /home/steph/bin/EQUALIZER/
steph@steph-desktop:~/bin/EQUALIZER$ ls -l
total 64
-rw-r--r-- 1 steph steph 363 2009-11-01 20:58 equalizer.class
-rw-r--r-- 1 steph steph 509 2009-11-01 20:58 equalizerFrame$1.class
-rw-r--r-- 1 steph steph 2027 2009-11-01 20:58 equalizerFrame$2.class
-rw-r--r-- 1 steph steph 536 2009-11-01 20:58 equalizerFrame$3.class
-rw-r--r-- 1 steph steph 2310 2009-11-01 20:58 equalizerFrame$4.class
-rw-r--r-- 1 steph steph 6064 2009-11-01 20:58 equalizerFrame.class
-rw-r--r-- 1 steph steph 13770 2009-11-01 20:58 equalizer.java
-rw-r--r-- 1 steph steph 13772 2009-11-01 20:58 equalizer.java~
-rwxr-xr-x 1 steph steph 158 2009-11-01 20:58 loadequalizer
(everything is there...)
steph@steph-desktop:~/bin/EQUALIZER$ equalizer
(It works. Ok. Let's close equalizer and move up from one directory...)
steph@steph-desktop:~/bin/EQUALIZER$ cd ..
steph@steph-desktop:~/bin$ equalizer (The result is shown below)
steph@steph-desktop:~/bin$ Exception in thread "main" java.lang.NoClassDefFoundError: equalizer
Caused by: java.lang.ClassNotFoundException: equalizer
at java.net.URLClassLoader$1.run(URLClassLoader.java: 217)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.j ava:205)
at java.lang.ClassLoader.loadClass(ClassLoader.java:3 23)
at sun.misc.Launcher$AppClassLoader.loadClass(Launche r.java:294)
at java.lang.ClassLoader.loadClass(ClassLoader.java:2 6
at java.lang.ClassLoader.loadClassInternal(ClassLoade r.java:336)
Could not find the main class: equalizer. Program will exit.

Putting the link in the Main menu doesn't help. Nothing happens. In fact, the same happens than above but since there is no terminal window associated with it, I don't see anything.
My Ubuntu 9.10 Karmic was recently installed from scratch (I didn't upgrade from 9.04). So, it might be that I miss something in my present installation.
Best regards,
Steph

[blacksm1th]

I use this script to run EQ:

#!/bin/sh
cd /home/azot/equalizer/ # <- this path must be edited
java equalizer &

And with shortcut on panel with this:

/home/azot/equalizer/run-eq.sh

in command textbox.

[sbersier]

Yep! It works perfectly. Thanks a lot. I will modify my original post according to your suggestion.
Best regards,
Steph

[undertakingyou]

It may be of note that with the Audigy 2 soundcard that I have (and I assume all the Audigy cards that use the same driver snd-emu10k1) also requires one additional thing to make the audio work correctly.

In a terminal:

alsamixer

Go over to the Audigy Analog/Digital output jack and press 'm' to switch it on.
Press escape to leave alsamixer.
Logout and then Login.

[tipiglen]

Blacksmith, A similar solution, and simpler than mine, And tidier.

Steph, Glad it works for you

Thanks to both of you

http://home2.btconnect.com/tipiglen/loveandpeace3.gif
<b>Salaam/Shalom/Shanthi/Peace</b>

ed