[Feature] FFT convolver load during session

[corrpel]

Hello,
It would be awesome to be able to load different impulse response file while audio is playing.
How i use FFT:
I add some reverb and modify the low frequency values to my likes.
But sometimes, let's say at 10 PM, i want to apply a different sound signature to reduce disconfort for my neighbords, so it would be nice to load a new sample via dbus for example, without needing to modify the config file and restart the application.

[mikebrady]

Thanks for the suggestion. I’ll have a look at it.

[mikebrady]

@corrpel , would you have any impulse response files you could share for experimentation, or could you point to any that are already available, please?

[corrpel]

Hi Mike, I will get back to you with two files. I am currently at work. Thanks. Cornel

…

On Sun, Nov 10, 2019 at 12:24 PM Mike Brady ***@***.***> wrote: @corrpel <https://github.com/corrpel> , would you have any impulse response files you could share for experimentation, or could you point to any that are already available, please? — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#929?email_source=notifications&email_token=ABRHPK2O6ZGI42IGY7YUIQLQS7OMPA5CNFSM4JJDET32YY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOEDU2ADA#issuecomment-552181772>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABRHPK3OIPO3VGUQFSJTQCLQS7OMPANCNFSM4JJDET3Q> .

[mikebrady]

Thanks. I’ve made some headway on it and I’d like to test it out a bit.

[corrpel]

dirac_boom.zip
dirac is a linear impulse response
boom is a bit modified

[mikebrady]

I've just pushed 3.3.5d1 into the development branch with some new properties in the native D-Bus interface to enable you to control convolution. If you got a chance to try it out, I'd be interested to hear of your experiences.

[mikebrady]

Actually, wait, there's a compilation bug....

[mikebrady]

Compilation bugs fixed!

[corrpel]

Nice!
Is working very well.
I've tested disable, enable, and load new file.
All working good!
Thank you!

[mikebrady]

Thanks. I’ll close this issue when the update is pushed to the master branch.

[PaulWieland]

Can either of you elaborate on how to use this feature?

I believe that I have the dsp/convolution_ir_file generated correctly but I would like to be able to toggle it on/off or between different filter files to hear the effect.

FYI - I'm using the docker image if that matters...

EDIT: I found the Sample DBUS commands file and was able to figure out what the Convolution properties were by searching the source code.

• To turn off the filter: dbus-send --print-reply --system --dest=org.gnome.ShairportSync /org/gnome/ShairportSync org.freedesktop.DBus.Properties.Set string:org.gnome.ShairportSync string:Convolution variant:boolean:false
• Turn it back on: variant:boolean:true

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