Coding Spirit

一位程序员,比较帅的那种

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Linux配置默认声卡

树莓派多声卡,尝试配置声卡0为默认输出设备,声卡1为默认输入设备。

List all play/record device

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pi@raspberrypi:~ $ aplay -l
**** 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 ALSA [bcm2835 IEC958/HDMI]
Subdevices: 1/1
Subdevice #0: subdevice #0
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pi@raspberrypi:~ $ arecord -l
**** List of CAPTURE Hardware Devices ****
card 1: Device [USB PnP Sound Device], device 0: USB Audio [USB Audio]
Subdevices: 1/1
Subdevice #0: subdevice #0

Set card 0 as playback, card 1 as capture

Open .asoundrc file under $HOME

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cd $HOME
vim .asoundrc

Modify .asoundrc:

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pcm.!default {
type asym
playback.pcm "plughw:0,0"
capture.pcm "plughw:1,0"
}
ctl.!default {
type hw
card 0
}

*”plughw:1,0”* means card 1, device 0

Then save file and reboot