ChannelLayout:
| "mono"
| "stereo"
| "2.1"
| "3.0"
| "3.0(back)"
| "4.0"
| "quad"
| "quad(side)"
| "3.1"
| "5.0"
| "5.0(side)"
| "4.1"
| "5.1"
| "5.1(side)"
| "6.0"
| "6.0(front)"
| "hexagonal"
| "6.1"
| "6.1(back)"
| "6.1(front)"
| "7.0"
| "7.0(front)"
| "7.1"
| "7.1(wide)"
| "7.1(wide-side)"
| "7.1(top)"
| "octagonal"
| "cube"
| "hexadecagonal"
| "22.2"
| "stereo downmix"
| "ambisonic first order"