9.1.5 channels for a home cinema sound field
In a 9.1.5 layout the first number stands for the main channels at ear level, the second for the bass channel and the third for the height channels. Nine main channels let sounds be placed more widely than on a standard 5.1 system, so moving sound such as a car, footsteps or a voice travels smoothly from one side to the other. Five height channels add a layer of sound from above.










