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Setting up the HDR Audio Dynamic Range Window

Getting set up for HDR in Wwise begins with setting the Volume Threshold (window width) that encapsulates the expected dynamic range for a specific target platform. This Volume Threshold applies to the dynamic range on the output of the HDR system.

To begin setting up an HDR system using the provided Wwise Project Adventure, set the Volume Threshold in the Project Settings to -50 dB:

Setting the Volume Threshold in the Project Settings

The Volume Threshold value from the Project Settings defines the difference between the window top and window bottom. This means that when the amplitude of the loudest sound is played back at HDR bus volume, any sounds below the Volume Threshold (window bottom) set for the platform will either be killed or use their virtual voice settings according to the advanced settings defined in the object properties of each structure. When the window shifts, the dynamic range specified for the window is maintained as it rises and falls adjusting to the loudest sound played back at the HDR bus volume.

Visualization of a 50 dB Dynamic Range Volume Threshold Window shifting over time.

This Volume Threshold allows sounds that are within the specified volume range to be heard at the output. As the window moves, the volume of sounds that are playing is modified by the value of the loudest sound. This process ensures that sounds that are authored the loudest are heard and quieter sounds (below the window bottom) are removed from the mix.


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