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#1 2019-03-29 21:09:02

hhh
Meep!
Registered: 2015-09-17
Posts: 8,315
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pulseaudio-equalizer

tl:dr; I found this revolutionary for my ultra-cheap audio setup.

I'm opening this thread here instead of one of the other forums because of this warning on the Arch Wiki...

Arch Wiki wrote:

Warning: PulseAudio equalizer module is considered unstable and might be removed from PulseAudio.

So, apparently, Debian is now "bleeding edge". After all, that package is available in stretch.

https://packages.debian.org/stretch/pul … -equalizer

OK, I've tried this program in the past and it has been a train-wreck. But I have it running now with the cheapest of audio equipment and the difference is too profound to not post. Here is the criminal...

https://gpx.com/portable-speaker-sa64b.html

Ah, yes my friends. Nothing but the best. $19.99? Pffft... 11 bucks at the dollar store. That buys you...

One (1) 5.51 x 4.92 x 10.43 inch plastic box!

One (1) 2.5" speaker (the other one, the "tweeter", is a dummy)!

Stereo 3.5mm input to Mono output!

USB or battery powered!

The computer is a 10+ year-old Dell Inspiron laptop.

------------

Sorry. OK, the only thing I want is the output sink, I don't care about the GUI equalizer and neither should you (yet). I used the Arch Wiki entry on PulseAudio to get this going, but I'm tweaking the instructions here.

https://wiki.archlinux.org/index.php/Pu … _Equalizer

1) In stretch, buster or sid, install pulseaudio-equalizer...

sudo apt install pulseaudio-equalizer

2) Edit /etc/pulse/default.pa and add the following...

### Load the integrated PulseAudio equalizer and D-Bus module
load-module module-equalizer-sink
load-module module-dbus-protocol

3) Reboot.

4) Start an audio source (anything, a YouTube video, whatever).

5) Open pavucontrol (on BL, W-v)

6) On the default "Playback" tab, toggle "Built-in Analog Stereo" to "FFT-based equalizer on Built-in Analog Stereo".

That's it. It will sound softer. Turn up your volume a bit to match the old sound. Now toggle back... in my case that was all it took, I could hear that the sink rolled off those horrible midrange resonances in the cheap plastic cabinet, and the highs to match. Things are tighter, I can turn it up to hear some bass without the upper range killing me, I can listen without ear-fatigue now. My cheap headphones sound better, too.

After a couple of reboots and making sure it all works, you can open the stupid GUI (qpaeq). Be warned, "Reset" does not reset the Preamp slider and there are no indicators to tell you what level you're at. In a pinch, Reset, open a window and put it's bottom edge 1px above the frequency sliders, then you can adjust the Preamp as well. Unless you have a specific range you need to alter, just leave it flat. The sliders don't change the sound for you? Good, leave it flat.

Removal is doing that all in reverse. monkey

Last edited by hhh (2019-03-29 23:41:36)

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#2 2019-03-29 21:56:51

hhh
Meep!
Registered: 2015-09-17
Posts: 8,315
Website

Re: pulseaudio-equalizer

BTW, what drove me to try the equalizer sink again was that I wanted to fall asleep to a thunderstorm, there are hundreds of options online, in app, etc... Without the sink it sounded like a flanger.

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#3 2019-03-29 22:12:32

twoion
ほやほや
Registered: 2015-08-10
Posts: 2,482

Re: pulseaudio-equalizer

The superior solution (and inofficial successor to the equalizer plugin) is pulseeffects (https://github.com/wwmm/pulseeffects); there, besides equalizing, a multitude of filters can applied to an audio stream. And it's just a regular PA sink, so it can be chained with whatever else you have in PA smile It requires a recent pulseaudio though and there are IIRC no official Debian packages, in any Debian distribution (stable/testing/unstable).


A silent kite against the blue, blue sky

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#4 2019-03-29 22:41:20

hhh
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Registered: 2015-09-17
Posts: 8,315
Website

Re: pulseaudio-equalizer

Nice! Hesitant to try it since I have this working. I just had a hell of a time with locales. big_smile

@twoion, *unofficial. Feel free to correct my German or Japanese at any time.

This sink does have the advantage of being in the repos. apt FTW.

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#5 2019-03-29 23:05:06

hhh
Meep!
Registered: 2015-09-17
Posts: 8,315
Website

Re: pulseaudio-equalizer

twoion wrote:

The superior solution (and unofficial successor to the equalizer plugin) is pulseeffects (https://github.com/wwmm/pulseeffects); there, besides equalizing, a multitude of filters can applied to an audio stream. And it's just a regular PA sink, so it can be chained with whatever else you have in PA smile It requires a recent pulseaudio though and there are IIRC no official Debian packages, in any Debian distribution (stable/testing/unstable).

For the even more adventurous...

https://github.com/wwmm/pulseeffects/wi … an--ubuntu

https://launchpad.net/~mikhailnov/+arch … /+packages

Last edited by hhh (2019-03-29 23:11:40)

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#6 2019-03-29 23:53:29

hhh
Meep!
Registered: 2015-09-17
Posts: 8,315
Website

Re: pulseaudio-equalizer

Test track...

https://www.youtube.com/watch?v=0KSOMA3QBU0

Test track 2...

https://www.youtube.com/watch?v=8uUCIQ50e-4

Test track 3...

https://www.youtube.com/watch?v=f0kC5IYJ6M4

Test track 4 (NSFW, cannot unsee)...

https://www.youtube.com/watch?v=HMUDVMiITOU

That last one is a great test. All the frequencies, bass, mids, highs, are all in their own range in the breakdowns, and then there are those sweeps from low to high. If those don't sound more even with the eq module, then I don't know what I'm hearing.

mpv https://www.youtube.com/watch?v=HMUDVMiITOU

Test track 5...

mpv https://www.youtube.com/watch?v=X0C3DHp36zc

One more...

mpv https://www.youtube.com/watch?v=IJ4kCft5I5A  --no-video

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#7 2019-03-30 05:13:15

johnraff
nullglob
From: Nagoya, Japan
Registered: 2015-09-09
Posts: 5,721
Website

Re: pulseaudio-equalizer

Subscribed


John
--------------------
( a boring Japan blog , Japan Links, idle twitterings  and GitStuff )
In case you forget, the rules.

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#8 2019-03-30 09:44:44

ohnonot
...again
Registered: 2015-09-29
Posts: 3,909
Website

Re: pulseaudio-equalizer

oh please make me unsee it... gah...

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#9 2019-03-30 13:06:46

hhh
Meep!
Registered: 2015-09-17
Posts: 8,315
Website

Re: pulseaudio-equalizer

@ John, big_smile

@ohnonot, Lol... NSFW tag added.

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