Is the track a channel?

Unity
1

Is the sound track a channel?

2

A FMOD::Sound, this is the same as an Audio Track in Studio, will use one channel to play.
Events can be made up of many Sounds/Tracks/Channels.

You can find some more information here:
https://fmod.com/resources/documentation-api?page=content/generated/overview/terminology.html#/

3

thanks！