I learnt something important about Linux audio last night.

I noticed that I had no sound in X-Plane 12 (a flight simulator) while also being in a Discord call in Firefox. Apparently, certain FMOD applications check if PulseAudio is installed and fall back to ALSA if it isn't. Now, I have PipeWire installed to fix the mess that is Linux audio once and for all. So TECHNICALLY PulseAudio is not installed. And that's exactly what X-Plane detected, which then tried to gain complete control over the sound hardware through ALSA, which it couldn't.

The "fix" was to symlink `/bin/pulseaudio` to `/bin/true` to make it look like PulseAudio is available which tricked X-Plane into going through PulseAudio (and therefore through PipeWire) instead.

That was one of the weirdest problems I've ever encountered.

#linux #audio #xplane #xplane12 #discord #firefox #alsa #pulseaudio #pipewire #fmod #flightsim

A long pending post from @sanchayan on how we implemented ALSA compress offload support in @pipewire

https://asymptotic.io/blog/pipewire-compressed-offload/

#PipeWire #LinuxAudio #Linux #audio #embedded #IOT

I put together recording setup guide for Fedora Linux using OBS Studio. Only GUI, not messing with config files.

https://gitlab.com/hanku.lee/fedora-release-party-presentation/-/blob/main/obs-audio-setup.pdf

#linux #jitsi #obs #fedora #audio #PipeWire

obs-audio-setup.pdf · main · Hank Lee / Fedora Event Presentation · GitLab

GitLab.com

^GitLab

The popular DJ software @mixxx is now official on Flathub

Announcement: https://mixxx.org/news/2024-02-21-official-flatpak-now-available-on-flathub

Get Mixxx on Flathub: https://flathub.org/apps/org.mixxx.Mixxx

#Mixxx #Flathub #Flatpak #Linux #OpenSource #FOSS #FLOSS #dj #audio #DigitalAudio

Fun random fact: the sample rate of Audio CD format is 44100Hz. The Nyquist frequency for audible sound is roughly double the upper limit of human hearing, which is 20kHz.

So why is the CDDA sample rate more than 40kHz, but only a little bit more?

The prime factorization of 44100 is 2^2•3^2•5^2•7^2, which gives a LOT of options for computationally cheap downsampling and playback speed reduction. 😁

Edit: See replies for more reasons this sample rate was chosen! 💙

#math #electronics #audio

Well this is nice -- using my stock @fedora desktop, I start up Guitarix and Carla, and start noodling like a noob on my guitar without thinking too much about setting things up, because @pipewire is excellent.

There's ways to go for this to be a *good* user experience, but it's still miles ahead of having to manually poke and prod to get some basics started, and some of the Guitarix fx sure are fun :)

#linux #audio #linuxaudio #guitar

Fedora Magazine got an interview up of Wim Taymans about the PipeWire 1.0 release and plans going forward.
https://fedoramagazine.org/pipewire-1-0-an-interview-with-pipewire-creator-wim-taymans/

#linux #pipewire #fedora #audio

PipeWire 1.0 - An interview with PipeWire creator Wim Taymans - Fedora Magazine

With PIpeWire hitting its 1.0 release we speak with project lead Wim Taymans about what has been achieved and where we go from here.

^{Christian Fredrik Schaller (Fedora Project)}

Hi there, fedi,

Did you know you can use your fedi account to #voice #chat with followers or other fedizens? The software is called #audon (for #audio on #mastodon I guess) and works pretty well.

And if you're the sort of fedi person who likes DIY and self-hosting, the project is free software so you can do that, too. Give it a shot, if voice is something that interests you at all.

Try it on https://audon.space/

Audon

Audio spaces for Mastodon

^{Audon hosted on audon.space}