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Associating low-pass and high-pass filter values with their corresponding cutoff frequencies
In order to save CPU usage at runtime and to use the same model for low-pass filter and high-pass filter as for volume, pitch, and LFE (which is relative through the hierarchy), the low-pass and high-pass filter properties have been normalized between 0 and 100%.
Example of LPF values' corresponding cutoff frequencies
Imagine a sound structure with a sound and a container where:
LPF on Sound = 15%
LPF on Container = 30%
In this scenario, the final LPF that will be applied at runtime is 45%, which represents a cutoff frequency of 1,922 Hz.
Using real cutoff frequency values for the low-pass filter in Wwise would have looked something like this:
In this example, defining the final cutoff frequency at runtime would have been unclear.
Wwise LPF and HPF value cutoff frequencies
The following table provides an approximate correspondence between Wwise LPF/HPF values, ranging from 0 to 100, and the actual cutoff frequency in Hertz. This is intended as a simplified guide to the Wwise relative value system for LPF and HPF; your real cutoff frequencies may be slightly different.
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