Exporting EQ preset with "Resonance" band crashes

[amphyvi]

EasyEffects Version

7.2.3

What package are you using?

Flatpak (Flathub)

Distribution

Ubuntu 25.04

Describe the bug

Hi, I'm getting some strong crystalline sharpness somewhere in the 12kHz range with EasyEffects enabled. So, I figured I'd just EQ it down, especially since I can set a band to "Resonance".

But, if I press the "APO" button under "Export Preset" and attempt to save it with any bands with its type set to "Resonance", the following happens all at once:

• Easy Effects crashes.
• All equalizer effects halt.
• An empty file is generated with the name I specified when exporting.

Feels as if Easy Effects generates the file successfully, but can't figure out how to export with a band set to "Resonance". This is what the file looks like:

Filter 1: ON LSC Fc 20 Hz Gain 5.7 dB Q 0.6666667
Filter 2: ON PK Fc 96 Hz Gain 2.5 dB Q 1.41
Filter 3: ON PK Fc 234 Hz Gain -1.7 dB Q 1.27
Filter 4: ON PK Fc 1148 Hz Gain -2.4 dB Q 1.15
Filter 5: ON PK Fc 1697 Hz Gain 1.4 dB Q 1.22
Filter 6: ON PK Fc 2348 Hz Gain 2.5 dB Q 3.3
Filter 7: ON PK Fc 5815 Hz Gain 0.6 dB Q 2.92
Filter 8: ON PK Fc 6000 Hz Gain 0.5 dB Q 0.56
Filter 9: ON PK Fc 7679 Hz Gain 1.4 dB Q 3.04
Filter 10: ON PK Fc 9514 Hz Gain 1.7 dB Q 3.52
Filter 11: ON PK Fc 11516 Hz Gain 0.8 dB Q 1.2
Filter 12: ON PK Fc 12000 Hz Gain -2.85 dB Q 4.36
Filter 13: ON HSC Fc 19828 Hz Gain -5.8 dB Q 0.6666667

I tried renaming Filter 12 from "PK" to different things (tried RES, RS, RE, RSO, etc) to try to just change it to being a "Resonance" band but it's been unsuccessful - importing the manually-modified preset works, but band/Filter 12 imports as "Off". The only way I can save the preset is to change band 12 to something other than "Resonance" to export successfully & leave myself a note saying to change that band back to "Resonance" anytime I want to import it.

Sorry for not including a log, I followed the steps below ("If relevant, please add a log by launching with G_MESSAGES_DEBUG=easyeffects") but I'm not sure where to find the generated log, if one exists.

Expected Behavior

Exports a .txt file with all EQ bands populated normally.

Debug Log

Debug Log

Paste your log here

Additional Information

The Debugging Information section just says:
"Commit: Could not find commit of build"

[wwmm]

We probably should not crash when doing these operations. But the first question I have in my mind is if equalizer APO has a mode equivalent to LSP resonance. Usually what people do on APO equalizer correlates to what LSP calls Bell filter.

Our support for APO presets will probably never be complete as none of the developers involved in EasyEffects development use equalizer APO. If all you want to do is saving a preset file use EasyEffects native preset format. The import/export APO feature is just to easy the pain some APO users have when migrating settings to EasyEffects. There will always be a rough edge somewhere when using this format.

[wwmm]

Sorry for not including a log, I followed the steps below ("If relevant, please add a log by launching with G_MESSAGES_DEBUG=easyeffects") but I'm not sure where to find the generated log, if one exists.

The easiest way is killing EasyEFfects easyeffects -q and restarting it in debug mode as G_MESSAGES_DEBUG=easyeffects easyeffects. This way you will see the log messages in the terminal window.

[wwmm]

I forgot that for Flatpak packages there are some small differences when trying to get logs https://github.com/wwmm/easyeffects/wiki/Reporting-Bugs#basic-logs

[Digitalone1]

I can reproduce it.

The problem is here: https://github.com/wwmm/easyeffects/blob/master/src/equalizer_ui.cpp#L589

We don't catch the map exception as we do in the other map: https://github.com/wwmm/easyeffects/blob/master/src/equalizer_ui.cpp#L449-L453

@amphyvi Which APO filter correspond to LSP EQ Resonance?

If there's no equivalent, should we default to PK?

[amphyvi]

Ah it's not Flatpak, thought it was. It's standalone, installed through Discover on KDE.

Here's what I get when I start easyeffects using the command to record logs:

(easyeffects:310573): Gtk-WARNING **: 08:57:54.822: Unknown key gtk-modules in /home/user/.config/gtk-4.0/settings.ini

(easyeffects:310573): Adwaita-WARNING **: 08:57:55.075: Using GtkSettings:gtk-application-prefer-dark-theme with libadwaita is unsupported. Please use AdwStyleManager:color-scheme instead.
map::at
user@host:~$ 

Both of the (easyeffects:310573) messages happen before EE opens. The moment I press Save when exporting the APO txt file, that last map::at line shows up right as EE crashes.

[amphyvi]

@amphyvi Which APO filter correspond to LSP EQ Resonance?

If there's no equivalent, should we default to PK?

The "Resonance" type isn't in that list, which might explain things. I always set my "Resonance" bands to "Bell" (PK) before exporting so it doesn't crash, then leave myself a note saying "change band n to Resonance" so I can re-import it successfully as well.

We probably should not crash when doing these operations. But the first question I have in my mind is if equalizer APO has a mode equivalent to LSP resonance. Usually what people do on APO equalizer correlates to what LSP calls Bell filter.

Our support for APO presets will probably never be complete as none of the developers involved in EasyEffects development use equalizer APO. If all you want to do is saving a preset file use EasyEffects native preset format. The import/export APO feature is just to easy the pain some APO users have when migrating settings to EasyEffects. There will always be a rough edge somewhere when using this format.

Makes sense. Might be worth having a notice that pops up at export time when using features that APO doesn't support (or if you don't want to keep up with that, maybe like a (?) thing to hover over next to the button) since that's the only available option for exporting an EQ. Thanks for checking in!