我有一个连接到树莓派3的USB麦克风和扬声器适配器。我已经在alsamixer上设置了所有内容。我还在主目录中的pcm.!default sysdefault:0
文件中设置.asoundrc
,将usb音频适配器设置为默认音频卡。
我已经运行:aplay -l,输出为:
card 0: ALSA [bcm2835 ALSA], device 0: bcm2835 ALSA [bcm2835 ALSA]
Subdevices: 7/8
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
card 1: Device [USB PnP Sound Device], device 0: USB Audio [USB Audio]
Subdevices: 1/1
Subdevice #0: subdevice #0
然后我在主目录的.asoundrc文件中设置pcm。!default sysdefault:0。
当我运行命令时:arecord -d 5 -r 48000 test.wav
我收到此错误:
arecord:set_params:1233:样本格式不可用可用 格式: - S16_LE
答案 0 :(得分:9)
解决方案是将.asoundrc更改为:
pcm.!default {
type plug
slave {
pcm "hw:1,0"
}
}
ctl.!default {
type hw
card 1
}
答案 1 :(得分:0)
有效的通用配置为:
$ sudo nano ~/.asoundrc
pcm.!default {
type asym
playback.pcm {
type plughw
slave.pcm "output"
}
capture.pcm {
type plughw
slave.pcm "input"
}
}
pcm.output{
type hw
card 1
}
ctl.!default {
type hw
card 1
}