Retroarch audio DSP

[janderclander14]

Retroarch audio settings have an option to load DSP plugins such as low pass filters, which are useful for old chiptune systems.

However, no .dsp files come with the Retropie's Retroarch version. I've tried to download and copy .dsp files from the Retroarch git repository ( https://github.com/libretro/RetroArch/tree/master/libretro-common/audio/dsp_filters ) but they do not seem to work as, quite likely, they require specifically compiled versions of the accompaining DSP libraries (which probably are not present in Retropie's compilation?).

Is it possible to support Retroarch DSP audio plugins in Retropie? Or is there something I could do to manually add the required audio libraries?

This is on a Raspberry Pi 5 with a manual installation of Retropie and the latest Retroarch version compiled from source.

[mitu]

Indeed, RetroPie's RetroArch installation doesn't include any filters, audio or video.

Is it possible to support Retroarch DSP audio plugins in Retropie? Or is there something I could do to manually add the required audio libraries?

We could add it in a new RetroArch version, they occupy little space.

To add it manually to your installation, you can clone the RetroArch's repository, run make from the libretro-common/audio/dsp_filters/ folder and then copy the dsp_filters folder to /opt/retropie/emulators/retroarch/filters/audio.

[janderclander14]

@mitu said in Retroarch audio DSP:

Indeed, RetroPie's RetroArch installation doesn't include any filters, audio or video.

Is it possible to support Retroarch DSP audio plugins in Retropie? Or is there something I could do to manually add the required audio libraries?

We could add it in a new RetroArch version, they occupy little space.

That would be great! Thanks for considering it.

I've have followed your instructions for manual compilation and they worked great! Chiptune enhance and lowpass filter really enhance old games soundtracks!