piCorePlayer6.1.0-Xenomai-44.1-48KHz雙機入門簡易安裝教學

[tetsuka]

output setting的內容

Specify the output device (-o) less>

<output device>

Default: default
- = output to stdout
Available output devices (click to use):

hw: devices are normally the best choice, but try and decide for yourself:

null
default
plugequal
equal

怪怪，看來沒有抓到USB DAC
**** List of PLAYBACK Hardware Devices ****
card 0: ALSA [bcm2835 ALSA], device 0: bcm2835 ALSA [bcm2835 ALSA]
Subdevices: 6/7
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
昏到了

理論上有出現hw:開頭的音效裝置聲音會是最好的，像小弟的USB DAC出現使用的是hw:CARD=Device,DEV=0
您的USB DAC或許是樹莓派4沒有抓到吧，小弟測試用的超便宜USB音效卡也是有出現hw:開頭的音效裝置。

請問jimmypan兄您的USB DAC是不是沒有直接用USB線接在樹莓派上?
USB DAC是否有透過USB HUB或是其他USB隔離裝置或是USB電訊分離線後再進入樹莓派4的USB?
如果是的話請先試著使用USB線讓USB DAC和樹莓派4直接連線後再試試看。
您使用的piCorePlayer6.1.0-arm64-88-96應該是sam兄提供的版本，Audio output device settings是否有變更為USB audio了?