我希望aplay从.arecordrc文件中读取,但它失败了。
pi@raspberrypi:~ $ aplay numnuts.wav
ALSA lib pcm_hw.c:1667:(_snd_pcm_hw_open) Invalid value for card
aplay: main:722: audio open error: No such device
当我在命令行中提供硬件时,它可以工作
pi@raspberrypi:~ $ aplay -D hw:0,0 numnuts.wav
Playing WAVE 'numnuts.wav' : Unsigned 8 bit, Rate 11025 Hz, Mono
我的.asoundrc:
pi@raspberrypi:~ $ cat .asoundrc
pcm.!default {
type asym
capture.pcm "mic"
playback.pcm "speaker"
}
pcm.mic {
type plug
slave {
pcm "hw:1,0"
}
}
pcm.speaker {
type plug
slave {
pcm "hw:0:0"
}
}
任何人都可以建议我在pcm中必须改变什么。扬声器
aplay -l output
pi@raspberrypi:~ $ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: ALSA [bcm2835 ALSA], device 0: bcm2835 ALSA [bcm2835 ALSA]
Subdevices: 8/8
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
答案 0 :(得分:0)
解决了它,这是一个错误的错误:
在pcm.speaker中
operator new
到
replace pcm "hw:0:0"