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标题: aplay播放没有声音 [打印本页]

作者: petershen 时间: 2021-3-13 12:00
标题: aplay播放没有声音
我刚入手TB-RK3399ProD开发板，可以运行debian10 系统，通过aplay -l
card 0: rockchiprk809co [rockchip,rk809-codec], device 0: ff890000.i2s-rk817-hifi rk817-hifi-0 []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: rockchiphdmi [rockchip,hdmi], device 0: ff8a0000.i2s-i2s-hifi i2s-hifi-0 []
  Subdevices: 1/1
  Subdevice #0: subdevice #0

运行命令
aplay -D hw:0,0 -t raw -r 48000 -c 2 -f s16_le 48000_2.pcm
Playing raw data '48000_2.pcm' : Signed 16 bit Little Endian, Rate 48000 Hz, Stereo

程序没有报错，但是耳机接入Headphone，听不到声音
请问是什么原因

作者: jefferyzhang 时间: 2021-3-13 17:38
请先看下教程：http://t.rock-chips.com/forum.ph ... &extra=page%3D1

作者: petershen 时间: 2021-3-13 18:18
hi， jeffery
   非常感谢，按照你的指导，已经可以采集和播放音频了。目前的问题是，是否支持用amixer设置播放或者采集的音量呢？
amixer -D HeadphoneNormal cget name='Playback Path'
XDG_RUNTIME_DIR (/run/user/1000) is not owned by us (uid 0), but by uid 1000! (This could e g happen if you try to connect to a non-root PulseAudio as a root user, over the native protocol. Don't do that.)
numid=1,iface=MIXER,name='Playback Path'
  ; type=ENUMERATED,access=rw------,values=1,items=11
  ; Item #0 'OFF'
  ; Item #1 'RCV'
  ; Item #2 'SPK'
  ; Item #3 'HP'
  ; Item #4 'HP_NO_MIC'
  ; Item #5 'BT'
  ; Item #6 'SPK_HP'
  ; Item #7 'RING_SPK'
  ; Item #8 'RING_HP'
  ; Item #9 'RING_HP_NO_MIC'
  ; Item #10 'RING_SPK_HP'
  : values=0

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