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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 to my default speaker. What is wrong here? Thanks...
UPDATE: after waiting a while, it says 'no space left on device'
Safal Aryal
Posted 2017-12-21T11:39:16.203
Reputation: 13
3
There was no special file /dev/audio. You have created a regular file and run out of space.
I think /dev/audio is an interface of OSS. Ubuntu uses Pulseaudio instead.
Kamil Maciorowski
Posted 2017-12-21T11:39:16.203
Reputation: 38 429
2
Has been anwsered on SO: How to pipe /dev/urandom to linux sound output? Basically:
aplay -c 2 -f S16_LE -r 44100 /dev/random
flowtron
Posted 2017-12-21T11:39:16.203
Reputation: 352
1FYI,
-f cdis a shortcut for (16 bit little endian, 44100, stereo) [-f S16_LE -c2 -r44100] And random could (would?) block, urandom's better for this sort of non-essential randomness (crypto/LUKS output would be even better, maybe sound different though) Does it sound as bad as it... sounds like it would? – Xen2050 – 2017-12-22T02:14:45.600