我有一块 xmos-200 板，能够记录 8 个通道并通过 8 个通道推送输出。我将重点关注输出。
对于输出，有 4 个 3.5 毫米插孔，每个插孔有 2 个通道。该板被Linux识别，aplay -L显示
sysdefault:CARD=x20
xCORE USB Audio 2.0, USB Audio
Default Audio Device
front:CARD=x20,DEV=0
xCORE USB Audio 2.0, USB Audio
Front speakers
surround40:CARD=x20,DEV=0
xCORE USB Audio 2.0, USB Audio
4.0 Surround output to Front and Rear speakers
surround41:CARD=x20,DEV=0
xCORE USB Audio 2.0, USB Audio
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=x20,DEV=0
xCORE USB Audio 2.0, USB Audio
5.0 Surround output to Front, Center and Rear …