The Wwise Project Adventure

When either limit is reached, Wwise uses the priority setting of the object to determine which one to stop and which one to play. If objects have equal priority, there is the option to stop the newest or oldest instance that is playing.

When you set a playback limit at the Actor-Mixer or Interactive Music level, you control the number of instances within the same structure that can be played, per game object. If a child object ignores the playback limit set at the parent level, the total number of instances that can play is their sum. This means that if, for example, you have a parent with a limit of 20 and a child object set to Ignore parent with a limit of 10, the total possible number of instances is 30. If, however, the child were not set to Ignore parent, then the total possible number of instances would be the same as the parent.