| Word | Description |
| Random Container | A group of one or more sounds, motion fx objects, and/or containers that are played back in a random order. |
| Randomizer | An special effect in Wwise that is applied to a property value that allows you to define a range of possible values that can be used randomly each time an object is played. |
| Recursive Filter | A filter that uses previously-calculated output values in addition to the current input values to calculate the latest output. Also known as feedback filters. |
| Relative Property | Properties, such as volume and pitch, that can be defined at each level within your project hierarchy. These property values are cumulative, which means that a parent’s property values are added to those of the child. |
| Reverb | An audio effect plug-in that simulates the acoustics of a particular room or space. |
| Reverb Lite | An audio effect plug-in that quickly simulates the acoustics of a particular room or space. The Wwise Reverb Lite plug-in is less flexible than the Wwise Reverb plug-in (it does not simulate early reflections), but it is easier to use and comes at a lower cost in terms of CPU and memory usage. |
| Ripple (in passband) | The difference between the maximum and minimum attenuation within a passband. |
| RMS Power | Root Mean Square. This is a measure of a signal’s average amplitude that provides in most cases a better approximation of a signal’s power than using peak amplitude. This value is obtained by summing the square of the samples over a given time window and taking the square root of the result. |
| RTPC | Real Time Parameter Controls. An interactive method used to drive the audio or motion in game by mapping game parameter values to properties in Wwise. RTPCs can also be used to drive switch changes by mapping game parameters to switch groups. |