hw:CARD=Generic_1,DEV=0 和 hw:CARD=Generic_1,DEV=1 之间有什么区别?
显示我的声卡信息: aplay -L default Playback/recording through the PulseAudio sound server null Discard all samples (playback) or generate zero samples (capture) jack JACK Audio Connection Kit pulse PulseAudio Sound Server mpd sysdefault:CARD=Generic_1 HD-Audio Generic, ...