ls -ld /dev/dsp*
lrwxrwxrwx  1 root root       9 May 13 16:34 /dev/dsp -> sound/dsp
crw-rw-rw-  1 root audio 14, 19 Dec 28 01:02 /dev/dsp1
crw-rw-rw-  1 root audio 14, 35 Dec 28 01:02 /dev/dsp2
crw-rw-rw-  1 root audio 14, 51 Dec 28 01:02 /dev/dsp3