ALSA设备节点位于/dev/snd目录
luther@gliethttp:~$ tree /dev/snd
/dev/snd
|-- by-path
| `-- pci-0000:00:1f.5 -> ../controlC0
|-- controlC0
|-- pcmC0D0c
|-- pcmC0D0p
|-- pcmC0D1c
|-- pcmC0D2c
|-- pcmC0D3c
|-- pcmC0D4p
|-- seq
`-- timer
1 directory, 10 files
OSS的设备节点
luther@gliethttp:~$ ll /dev/dsp
crw-rw----+ 1 root audio 14, 3 2009-11-23 09:01 /dev/dsp
luther@gliethttp:~$ ll /dev/audio
crw-rw----+ 1 root audio 14, 4 2009-11-23 09:01 /dev/audio
luther@gliethttp:~$ ll /dev/mixer
crw-rw----+ 1 root audio 14, 0 2009-11-23 09:01 /dev/mixer
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