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volumio / Volumio2

Volumio 2 - Audiophile Music Player
http://volumio.org
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Play Back Sound With [aplay] at the same time? #2183

Open xujialiang opened 2 years ago

xujialiang commented 2 years ago

When I am playing back musics, at the same time, I try to use play sound with sudo aplay -vv /usr/share/sounds/alsa/Front_Center.wav

will tell me

aplay: main:828: audio open error: Device or resource busy

how can I do?

timothyjward commented 2 years ago

how can I do?

This requires either:

  1. A sound card with a hardware mixer
  2. A software mixer like dmix

Adding a software mixer can cause a serious drop in audio quality so Volumio doesn’t do it. You could create a custom Volumio plugin to add one, although the general recommendation would be not to do it.

xujialiang commented 2 years ago

how can I do?

This requires either:

  1. A sound card with a hardware mixer
  2. A software mixer like dmix

Adding a software mixer can cause a serious drop in audio quality so Volumio doesn’t do it. You could create a custom Volumio plugin to add one, although the general recommendation would be not to do it.

Thanks, I want to write a plugin to support sound effect. My hardware do not support mix.
So I try to add software mixer by plugin, but got errors: dmix need to connect direct with hw type. The plugin will always auto create a empty type node. How to create a dmix type node that direct to hw type?

Thanks a lot~