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Lesson 8

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Applying Dynamic Reverberation

While rendering Effects onto the imported music assets before importing them into Wwise helps reduce CPU usage at runtime, there are certain advantages to adding Effects to music within Wwise. One big advantage is that Effects can be dynamically applied and configured to interact with game play. In an earlier lesson, you attached the Player_Health Game Parameter to the volume of the electric guitar used in the combat music. You can use that same Game_Parameter to gradually apply more reverberation across the entire mix as the player’s health is at its lowest, adding a bit of a mysterious sound to the music when the Wwizard has almost been defeated.

  1. Select the Wwise 201 Music Audio Bus and click the Effects tab in the Property Editor. In the ID 1 position, assign the Wwise Matrix Reverb > Underground Parking1.

  2. Click the Edit button to open the Effect Editor.

    You see the Effect properties including the Wet level property. By default, the value is set to -30 dB, which means that the Effect will be fairly noticeable. For this application, you don’t want to hear the additional reverb unless the player’s health is extremely low, so you can attach an RTPC to modify the Wet level of the Effect.

  3. Click the RTPC tab.

  4. Click the [>>] selector and choose Wet level.

  5. Below the X Axis column, click the [>>] selector button and choose Game Parameters > Default Work Unit > PlayerHealth.

    The graph shows how the RTPC will impact the Wet level with the X axis representing the level of the Effect and the Y axis representing the player’s health.

  6. Configure the curve so the value is set to -25 dB when the health is at 0 and then gradually lowering to -96.3 dB by the time it reaches 15.

  7. Play the music and in the Soundcaster Session adjust the PlayerHealth RTPC to hear the change.

    You hear the reverb quickly build as the Wwizard's health value drops below 15, adding an ambience that gives a bit of mayhem to the mix and provides more audible feedback to the player that it's necessary to quickly find a health potion!

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