Correct

声道

/ shēng dào / 
Strokes

Definition

sound track/audio channel

Example

As a Noun

acoustic/sound/tone/voice channel

1
Shàn
单
  
/
shuāng
双
shēngdào
声道

single/double sound track

2
Shēngdào
声道
dǎohuàn
倒换

channel reversal