Unity Game Optimization - Third Edition

Applying filter effects through mixer groups to reduce duplication

Filter effects can be used to modify the sound effect playing through an audio source, and can be accomplished through FilterEffect components. Each individual filter effect will cost a certain amount of both memory and CPU, and can be a good way to achieve disk space savings while maintaining a lot of variety in audio playback since one file could be tweaked by a different set of filters to generate completely different sound effects.

Because of the additional overhead, overusing filter effects in our scene can result in dire consequences in performance. A better approach is to make use of Unity's audio mixer utility (Window | Audio | Audio Mixer) to generate common filter ...