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[pulseaudio-discuss] Can't get pulseaudio to use alsa/dmix?
https://pulseaudio-discuss.freedesktop.narkive.com/Eawt1Iao/can-t-get-pulseaudio-to-use-alsa-dmix
dmix has the same kind of effect within the ALSA library, but PulseAudio gives you more flexibility, and someone else said that in his experience it runs faster and gives less latency. PulseAudio provides an ALSA plugin, so you can do, for example, (with the right stanza in .asoundrc) aplay -D pulse song.wav
What is the relation between ALSA and PulseAudio sound ...
https://askubuntu.com/questions/581128/what-is-the-relation-between-alsa-and-pulseaudio-sound-architecture
The dmix plugin has been integrated with alsa and enabled by default since version 1.0.9 released in 2005. From any real metric, it is part of alsa by itself. It is simply misleading to imply alsa doesn't do what it has done successfully BY DEFAULT for over 16 years at this point. –
[SOLVED] Alsa - problem with mixing (dmix) multiple audio ...
https://bbs.archlinux.org/viewtopic.php?id=229286
null Discard all samples (playback) or generate zero samples (capture) pulse PulseAudio Sound Server hdmi:CARD=HDMI,DEV=0 HDA ATI HDMI, HDMI 0 HDMI Audio Output hdmi:CARD=HDMI,DEV=1 HDA ATI HDMI, HDMI 1 HDMI Audio Output hdmi:CARD=HDMI,DEV=2 HDA ATI HDMI, HDMI 2 HDMI Audio Output hdmi:CARD=HDMI,DEV=3 HDA ATI HDMI, HDMI 3 …
Dmix - Alsa Opensrc Org - Independent ALSA and linux …
https://alsa.opensrc.org/Dmix
Test basic dmix on alsa with: alsaplayer -o alsa -d plug:dmix some.mp3 & aplay -D plug:dmix some.wav & alsaplayer -o alsa -d plug:dmix some.mp3 & This should work everywhere with ALSA 0.9.7. (It works also with ALSA 0.9.8 on a snd-intel8x0, eg. on nForce2 audio). If the second and/or third audiostream stutters, it might be the buffers-problem ...
Alsa dmix high cpu usage | Linux.org
https://www.linux.org/threads/alsa-dmix-high-cpu-usage.22918/
So I decided to skip pulseaudio and only use Alsa with Dmix, and the sound works great! No problem at all with the sound. Added ”autospawn = no” to /etc/pulse/client.conf, but I notice some higher cpu usage. I have set sample rate with Alsa to 44100. mpg123 uses 30%, and mplayer 80%. With pulseaudio mpg123 it is 1-2% and mplayer 20-30%.
alsamixer - Alsa - dmix, softvol config? - Unix & Linux ...
https://unix.stackexchange.com/questions/488016/alsa-dmix-softvol-config
No, dmix channels don't show up as ALSA plugins, you can't put a softvol plugin in front, and they don't have mixer controls on their own. Would using Pulseaudio be an option? It can do what you want right out of the box. –
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