In game play, it’s not uncommon for fifty or more sounds to play simultaneously. Considering that the audio output of your computer most likely has only two output channels, left and right, Wwise must mix these signals together internally before reaching your computer’s audio interface.

You just learned that no actual mixing of audio occurs in the Actor-Mixer Hierarchy, so you may be wondering where mixing the various sounds together occurs. This is accomplished in the Project Explorer’s Master-Mixer Hierarchy, an area you’ve yet to explore, but you’ll soon learn you’ve been using it all along.