==================================================== Linux 常用命令 ==================================================== 音频相关命令 ==================================================== 查看系统中的音频设备: .. code-block::shell # cat /proc/asound/cards 0 [audiocodec ]: audiocodec - audiocodec audiocodec 1 [sndhdmi ]: sndhdmi - sndhdmi sndhdmi 麦克风相关 ---------------------------------------------------- 使用 arecord 查看麦克风,即音频捕获设备: .. code-block::shell arecord -l **** List of CAPTURE Hardware Devices **** card 0: audiocodec [audiocodec], device 0: SUNXI-CODEC sndcodec-0 [] Subdevices: 1/1 Subdevice #0: subdevice #0 扬声器相关 ---------------------------------------------------- 使用 aplay 查看扬声器,即音频输出设备: .. code-block::shell aplay -l **** List of PLAYBACK Hardware Devices **** card 0: audiocodec [audiocodec], device 0: SUNXI-CODEC sndcodec-0 [] Subdevices: 1/1 Subdevice #0: subdevice #0 card 1: sndhdmi [sndhdmi], device 0: SUNXI-HDMIAUDIO sndhdmi-0 [] Subdevices: 1/1 Subdevice #0: subdevice #0