树莓派|树莓派 centos7 命令行播放音乐树莓派centos7命令行播放音乐

1.安装
yum install alsa-utils -y

2.查看音频输出设备

[root@centos-rpi3 mp3]# aplay -l **** List of PLAYBACK Hardware Devices **** card 0: ALSA [bcm2835 ALSA], device 0: bcm2835 ALSA [bcm2835 ALSA] Subdevices: 6/8 Subdevice #0: subdevice #0 Subdevice #1: subdevice #1 Subdevice #2: subdevice #2 Subdevice #3: subdevice #3 Subdevice #4: subdevice #4 Subdevice #5: subdevice #5 Subdevice #6: subdevice #6 Subdevice #7: subdevice #7 card 0: ALSA [bcm2835 ALSA], device 1: bcm2835 ALSA [bcm2835 IEC958/HDMI] Subdevices: 1/1 Subdevice #0: subdevice #0

从上面可以看到两个设备0是耳机，1是HDMI，默认HDMI 3.播放音乐，用耳机

[root@centos-rpi3 mp3]# aplay -D hw:0,0 EverydayLove.wav Playing WAVE 'EverydayLove.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo

【树莓派|树莓派 centos7 命令行播放音乐】

如果不带设备参数，则会出错，因为我的HDMI木有设备

[root@centos-rpi3 mp3]# aplayEverydayLove.wav ALSA lib pulse.c:243:(pulse_connect) PulseAudio: Unable to connect: 拒绝连接aplay: main:722: audio open error: 拒绝连接

MP3不支持。。。