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Alsa Opensrc Org - Independent ALSA and linux audio ...
https://alsa.opensrc.org/DigitalOut
One of these is the digital out. We can test all outputs using the aplay command, or alternatively alsaplayer or mplayer. If you want to use aplay for this test, you need to have a .wav file. The numbers inside the square brackets (" [x- y] ") are indexes for the soundcard ( x) and the device ( y) on that soundcard.
audio playback - Alsa passthrough Digital In to Analog Out ...
https://raspberrypi.stackexchange.com/questions/134980/alsa-passthrough-digital-in-to-analog-out
audio playback - Alsa passthrough Digital In to Analog Out - Raspberry Pi Stack Exchange I have a LogiLink USB Soundbox 7.1 connect to a raspberry pi running rasbian and I want to passthrough the input of S/PDIF In to Speaker Front. I found this: Possible to route audio directly from usb- Stack Exchange Network
how to get Digital Output on alsa linux
https://www.linuxquestions.org/questions/linux-hardware-18/how-to-get-digital-output-on-alsa-linux-408105/
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Configuring Digital Sound with AC3 and SPDIF - MythTV ...
https://www.mythtv.org/wiki/Configuring_Digital_Sound_with_AC3_and_SPDIF
With a MythTV setup, the S/PDIF connection is truly the key toward passing digital audio out of the system and in to your home theater receiver. Most modern Linux distributions ship with the ALSA libraries and corresponding utilities pre-installed and configured out of the box. This simplifies the setup.
(ALSA) How to output sound to Build-In Audio, HDMI and S ...
https://forum.kodi.tv/showthread.php?tid=136302
Now, ALSA successfully outputs sound to Analog, S/PDIF and HDMI simultaneously. There is a minor issue with the script. If using below code for .asoundrc then menu sounds go through HDMI, but if I uncomment "rate 48000" in the Analog section, then menu sounds go through Analog output only.
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