Arch Linux

Luh

Member

Registered: 2018-01-22

Posts: 24

Rattling noise on the Digital Surround 5.1 (IEC958/AC3) sound profile

Hi,

I have a (Audeze LLC) Audeze Maxwell Headset, which works perfectly via USB on the stereo profile.
However, when I switch to the "Digital Surround 5.1 (IEC958/AC3)" profile, every output sound does a rattling noise.

According to this thread, the rattling sound is "unconverted digital audio sounds like when played to an analog audio device".

Meaningful installed packages :

$ sudo pacman -Q | grep -E "alsa|pipewire|wireplumber|audio|pulse|jack|pavucontrol"
alsa-card-profiles 1:1.2.6-1
alsa-firmware 1.2.4-4
alsa-lib 1.2.12-1
alsa-plugins 1:1.2.12-3
alsa-topology-conf 1.2.5.1-4
alsa-ucm-conf 1.2.12-1
audiocd-kio 24.08.2-1
audiofile 0.3.6-9
audiotube 24.08.2-1
kpipewire 6.2.2-1
lib32-alsa-lib 1.2.12-1
lib32-alsa-plugins 1.2.12-1
lib32-libpulse 17.0-1
libpipewire 1:1.2.6-1
libpulse 17.0-3
libwireplumber 0.5.6-1
pipewire 1:1.2.6-1
pipewire-audio 1:1.2.6-1
pipewire-jack 1:1.2.6-1
pipewire-pulse 1:1.2.6-1
pipewire-session-manager 1:1.2.6-1
portaudio 1:19.7.0-3
pulse-native-provider 1:1.2.6-1
pulseaudio-qt 1.6.1-1
webrtc-audio-processing-1 1.3-3
wireplumber 0.5.6-1

Any idea ?
I found this blog, but I have no idea how to use jconvolver.

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 23,300

Re: Rattling noise on the Digital Surround 5.1 (IEC958/AC3) sound profile

Virtual surround has no relation to the digital profile and you should not try to use it when your headset doesn't actually support it and you're not trying to route to a secondary device.

jconvolver is part of the *drumroll* jconvolver package. But as mentioned there you can generally use native pipewire configs for virtual surround profiles. The documentation of which you'll find here: https://gitlab.freedesktop.org/pipewire … l-surround