Support for AutoEq project

[Raul G.]

Please, add support for AutoEq project, by import GraphicEQ settings. With parametric Eq it's possible to approximate the results but it have to be done manualy. An import option like in the app Wavelet would be great. And, having the option to adjust Bass and treble too(like in parametric eq).

This is an example for KZ ZSN Pro X earphones:

GraphicEQ: 20 -5.9; 21 -6.0; 22 -6.1; 23 -6.2; 24 -6.3; 26 -6.4; 27 -6.4; 29 -6.5; 30 -6.6; 32 -6.7; 34 -6.8; 36 -6.8; 38 -6.9; 40 -7.0; 43 -7.1; 45 -7.2; 48 -7.4; 50 -7.5; 53 -7.6; 56 -7.8; 59 -7.9; 63 -8.0; 66 -8.2; 70 -8.4; 74 -8.4; 78 -8.5; 83 -8.6; 87 -8.6; 92 -8.6; 97 -8.7; 103 -8.7; 109 -8.8; 115 -8.8; 121 -8.8; 128 -8.8; 136 -8.8; 143 -8.7; 151 -8.7; 160 -8.6; 169 -8.5; 178 -8.4; 188 -8.4; 199 -8.3; 210 -8.2; 222 -8.0; 235 -7.9; 248 -7.7; 262 -7.4; 277 -7.2; 292 -6.9; 309 -6.6; 326 -6.3; 345 -6.0; 364 -5.7; 385 -5.3; 406 -5.0; 429 -4.7; 453 -4.5; 479 -4.1; 506 -3.8; 534 -3.6; 565 -3.3; 596 -3.0; 630 -2.7; 665 -2.5; 703 -2.2; 743 -2.0; 784 -1.7; 829 -1.6; 875 -1.5; 924 -1.5; 977 -1.7; 1032 -1.9; 1090 -2.4; 1151 -2.9; 1216 -3.5; 1284 -4.0; 1357 -4.3; 1433 -4.5; 1514 -4.7; 1599 -4.8; 1689 -5.1; 1784 -5.2; 1885 -5.4; 1991 -5.7; 2103 -6.1; 2221 -6.3; 2347 -6.3; 2479 -5.8; 2618 -4.9; 2766 -3.8; 2921 -2.6; 3086 -1.6; 3260 -0.8; 3443 -0.3; 3637 -0.2; 3842 -0.5; 4058 -1.2; 4287 -2.5; 4528 -4.6; 4783 -6.3; 5052 -7.1; 5337 -6.4; 5637 -4.9; 5955 -3.5; 6290 -2.0; 6644 -1.5; 7018 -3.0; 7414 -4.0; 7831 -4.0; 8272 -3.6; 8738 -3.5; 9230 -3.8; 9749 -4.3; 10298 -4.9; 10878 -5.5; 11490 -6.0; 12137 -6.7; 12821 -7.4; 13543 -8.2; 14305 -9.1; 15110 -10.1; 15961 -11.1; 16860 -12.2; 17809 -13.4; 18812 -14.6; 19871 -15.9

All the settings come with this format. 

AutoEq : jaakkopasanen/AutoEq: Automatic headphone equalization from frequency responses (github.com)

The dark green line is the paracmetric eq vs the original GraphicEq

[MotleyG]

I don’t understand these incredibly complex equalization adjustments. Most hardware manufacturers strive for the flattest output response possible. Most headphone manufacturers strive to make their headphones perform to a particular signature. If you don’t like the way your combination sounds, you probably need to consider a different pair of headphones at a minimum.

Equalization can be used to tailor sound to your exact preferences. But using somebody else’s curve can’t possibly be a better starting point than flat. Max has created Poweramp to be the best sound your phone can do, this kind of equalization just undoes all of that. 

[andrewilley]

I haven't tried that particular variant, but it's meant to be supported via the 'Import' feature in the EQ.

First save the desired AutoEQ settings to a text file, then go into the EQ screen, tap on the 'Preset' button (which may already have a preset assigned to it, but that doesn't matter) and long-press on any preset in the list. Then select Import and choose your saved file.

Andre

[Raul G.]

This is for adjust the frequencys accord to the frequency response of a headphone or earphone.
So, if your earphones doesn't have the best sound or frequency respone, with this settings yo can get an improvement.

[Raul G.]

@andrewilley I will try it

[Raul G.]

@andrewilley 

It worked, partially. 

I have to say, that I'm surprised.

So, I think with some tweaks, it could work better. I mean, the curve could be improved. 

Edited March 19, 2022 by Raul G.

[andrewilley]

@Raul G. The example you originally posted had 127 frequency bands. Poweramp's maximum for Graphic is I believe 32 - bearing in mind most non-studio applications offer 5 or perhaps 10.

So you are never going to get an exact match, I assume some averaging and approximation will be going on.

Andre

[Lincoln Davis]

@Raul G. the parametric eq works better for this kind of stuff but it is a pain to manually put them in, unless you find some already formatted to .json for power amp.

[Raul G.]

I've already made a python script for that. Like a temporary solution.

Here's the code:

expToPA.py

[dhruvburman]

@Raul G. Please give the cmdline args/ tutorial, Thanks :)

[andrewilley]

You should be able to import a parametric EQ settings text file directly from an Auto-EQ save.

Andre

[maxmp]

I would add that there are plans to embed the AutoEq database to Poweramp/Equalizer - that would simplify AutoEq preset selection based on the device.

[Raul G.]

@maxmp excelent! With a manual import please, for custom eq files made with the auto eq tool. 

[Raul G.]

@dhruvburman --e_name "EARHONE_NAME_HERE" 

The file with parametric settings should have the same name + parametric, etc. 

Execute the file in the same folder where your parametric settings are. 

[maxmp]

@Raul G. manual import is supported already by both Poweramp and Equalizer apps (open preset txt in any file manager and choose Poweramp or use Import action from Preset popup selection menu).

[Anandan Ajit]

This is my EQ settings for KZ ZSN Pro https://drive.google.com/file/d/1p97jKbWIhWmDagtqUpTxHmQ4jSZJcsL_/view?usp=drivesdk