HOWTO systemwide eq with alsaequal

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Re: HOWTO systemwide eq with alsaequal

Postby ant » 2012-12-24 15:56

ant wrote:Hello.

I tried to get this to work from http://www.thedigitalmachine.net/alsaequal.html and this forum thread. However, its EQ doesn't seem to work for me on my over year old Debian stable box with http://www.thedigitalmachine.net/tools/ ... .6.tar.bz2. I had no problems compiling it though:

# nano /root/.asoundrc
...
The author kindly replied to my e-mail and told me to try local ~/.asoundrc instead. That worked for mpg321 player, but not mpg123:
mpg123 -a hw:equal Rat\ Soufflé\ -\ Doctor\ Who\ \(Howell\ 2010\
Mix\).mp3
Cannot connect to server socket err = No such file or directory
Cannot connect to server socket
jackdmp 1.9.6
Copyright 2001-2005 Paul Davis and others.
Copyright 2004-2010 Grame.
jackdmp comes with ABSOLUTELY NO WARRANTY
This is free software, and you are welcome to redistribute it
under certain conditions; see the file COPYING for details
Cannot create thread 1 Operation not permitted
Cannot create thread 1 Operation not permitted
JACK server starting in realtime mode with priority 10
Cannot lock down memory area (Cannot allocate memory)
audio_reservation_init
Acquire audio card Audio0
creating alsa driver ...
hw:0|hw:0|1024|2|48000|0|0|nomon|swmeter|-|32bit
Using ALSA driver HDA-Intel running on card 0 - HDA Intel at 0xf7ff8000
irq 22
configuring for 48000Hz, period = 1024 frames (21.3 ms), buffer = 2
periods
ALSA: final selected sample format for capture: 32bit integer
little-endian
ALSA: use 2 periods for capture
ALSA: final selected sample format for playback: 32bit integer
ittle-endian
ALSA: use 2 periods for playback
Cannot use real-time scheduling (RR/10)(1: Operation not permitted)
AcquireSelfRealTime error
Cannot lock down memory area (Cannot allocate memory)
Registered as JACK client mpg123-11097.
Cannot use real-time scheduling (RR/5)(1: Operation not permitted)
AcquireRealTime error
Unknown destination port in attempted (dis)connection src_name
[mpg123-11097:left] dst_name [hw:equal]
[jack.c:125] error: connect_jack_ports(): failed to jack_connect()
ports: -1
JackTemporaryException : now quits...
jack main caught signal 2
[pulse.c:84] error: Failed to open pulse audio output: Invalid argument
[nas.c:222] error: could not open NAS server hw:equal

Released audio card Audio0
audio_reservation_finish
[audio.c:625] error: failed to open audio device
[audio.c:180] error: Unable to find a working output module in this
list: alsa,oss,esd,jack,pulse,nas,arts
[audio.c:527] error: Failed to open audio output module
[mpg123.c:847] error: Failed to initialize output, goodbye.

Weird. It looks like I have to tell each audio player to use Alsa's "equal" hw. Is there a way to force this by default for ALL software for audio? I couldn't figure out how to get my XMMS, Mplayer, web browsers, Gnome v2.23, VLC, etc. to use it by default. Is there a way to do that? :( https://johan.pp.se/2011/02/20/systemwi ... -equalizer says you just restart the software which I did. Does it require a reboot?
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Re: HOWTO systemwide eq with alsaequal

Postby andoru » 2014-03-23 16:59

Sorry for necromancing, but I couldn't find any other better thread for my question.
Just as Job posted earlier, I successfully installed libasound2-plugin-equal, alsamixer -D equal brings up the equalizer as expected, but no matter how I change it, it seems to not change the sound in VLC, it still sounds flat as if there were no equalizer. Any fix for it?
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Re: HOWTO systemwide eq with alsaequal

Postby patrick013 » 2014-03-24 01:19

I installed the equalizer per this, works fine all around.
Used the libasound2-plugin-equal equalizer plugin for
ALSA in the stable repo.


PCLinuxOS Magazine - Page 11

:D
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Re: HOWTO systemwide eq with alsaequal

Postby Polaris96 » 2014-05-08 12:17

TO ALL

Please be advised this HOW TO is pretty deprecated at this point. The most signifigant issue you'll likely encounter is a loss of functionality (or, rather, unpredictable functionality) when you've also got PulseAudiou installed.

ALSA and Pulse conduct a constant tug-o-war over which process gets the stream LAST. because of this, you might have some real issues with using alsaequal on a PA equipped system. I haven't been able to resolve this and don't have the time, right now to dig deeply into

b/r $POLARIS
for as long as the world remains. for as long as time remains. so, too, will I remain. To serve. To help. And to make my contribution. Also, never forget our family at debianuserforums.org If we can't solve your problem, they probably can.
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Re: HOWTO systemwide eq with alsaequal

Postby patrick013 » 2014-05-08 16:31

Polaris96 wrote:TO ALL
Please be advised this HOW TO is pretty deprecated at this point.
b/r $POLARIS


I ran mine with Pulse and it ran just as good. But, if you have Pulse
you really don't need it and can do some recording, LAN, etc.. a little
better also with Pulse. But to say it is deprecated on an ALSA only
system, I wouldn't go that far. Makes Flash, AlsaPlayer, Totem,
everything soundwise OK with a 3.13.x kernel.

regards,

P
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Re: HOWTO systemwide eq with alsaequal

Postby mh0 » 2014-09-17 21:00

Hi, total Linux noob here and I had some problems with the install specifically:

Code: Select all
~# cd alsaequal
    ~#make clean
    ~#make


Anyway, what I did was is just follow the instructions at this website from the start:
http://science-logbook.blogspot.co.uk/2 ... a-for.html

I noticed that some people could install the equaliser but then it did not affect theur sound at all. I too had this but a restart solved it.
Now however my headphones no longer work :(

Thanks for this guide. Maybe update it but I cant remember the error :p
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Re: HOWTO systemwide eq with alsaequal

Postby M_Odes » 2015-02-04 18:11

mh0 wrote:Hi, total Linux noob here and I had some problems with the install specifically:

Code: Select all
~# cd alsaequal
    ~#make clean
    ~#make


Anyway, what I did was is just follow the instructions at this website from the start:
http://science-logbook.blogspot.co.uk/2 ... a-for.html

I noticed that some people could install the equaliser but then it did not affect theur sound at all. I too had this but a restart solved it.
Now however my headphones no longer work :(

Thanks for this guide. Maybe update it but I cant remember the error :p


Hi, I'm the author of that blog, I've made some updates and even changed the blog's URL

The link to the updated post is here

http://dalogbook.blogspot.com/2013/08/system-sound-equalized-with-alsa-for.html

I hope you find it useful,

Chers
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