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linux - Running 'cat /dev/urandom > /dev/audio' does ...
https://superuser.com/questions/1279065/running-cat-dev-urandom-dev-audio-does-nothing
I am trying to have some fun by playing some random audio using /dev/audio under Ubuntu 17.10. The command cat /dev/urandom > /dev/audio executes successfully but it outputs absolutely nothing t...
[SOLVED] Cant hear sound from "cat /dev/urandom > …
https://www.linuxquestions.org/questions/linux-general-1/cant-hear-sound-from-cat-dev-urandom-dev-audio-883996/
However the "cat /dev/urandom > /dev/audio " version should as MrCode says, produce white noise. I presume your sound works OK for "normal" stuff, like playing music or YouTube etc. If it does, then you haven't got much to worry about on the audio front, believe me.
command line - How to cat a specific tone to /dev/audio ...
https://unix.stackexchange.com/questions/575372/how-to-cat-a-specific-tone-to-dev-audio
cat /dev/urandom generates a random sequence of all possibles "values". cat /dev/urandom | padsp tee /dev/audio > /dev/null directs these "values" to your audio device, turning them into "random noise" or "random tones" (see: Generating random noise for fun in /dev/snd/)
audio - Generating random noise for fun in /dev/snd ...
https://unix.stackexchange.com/questions/13732/generating-random-noise-for-fun-in-dev-snd
This will map the /dev/audio or /dev/dsp file to the new Audio Server system. Fire up the terminal and get into root mode with sudo su. Then, I'm going to cat /dev/urandom and pipe the output into padsp and use the tee command to send the data to /dev/audio. You'll get a ton of garbage in your terminal, so you may want to redirect to /dev/null.
catting weird things to /dev/audio - Everything2.com
https://everything2.com/title/catting+weird+things+to+%252Fdev%252Faudio
Try cat /dev/urandom > /dev/audio (outputs literally random sound). If you want something more meaningful, try simple patterns of values; the most simple value, and a good place to start, would be yes > /dev/audio, which outputs a high whining as the value 'y' is sent as audio over and over.
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