我外接了USB免驱麦克风，在aplay -l中能正常识别到，但是安装完ALSA后，插入麦克风，喇叭（接在驱动板上）就没声音了，我看了看教程，是需要设置.asoundrc吗？如果需要设置，应该怎么改？望大佬指点
pcm.!default{‌
type asym
playback.pcm {‌
type plug
slave.pcm "hw:0,2"
}
capture.pcm {‌
type plug
slave.pcm "hw:1,0"
}
}
aplay -l如下
**** List of PLAYBACK Hardware Devices ****
card 0: ALSA [bcm2835 ALSA], device 0: bcm2835 ALSA [bcm2835 ALSA]
Subdevices: 7/7
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
card 0: ALSA [bcm2835 ALSA], device 1: bcm2835 IEC958/HDMI [bcm2835 IEC958/HDMI]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: ALSA [bcm2835 ALSA], device 2: bcm2835 IEC958/HDMI1 [bcm2835 IEC958/HDMI1]
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