The Audio Low Pass Filter filter passes low frequencies of an AudioSource, or all sound reaching an AudioListener, and cuts frequencies higher than the Cutoff Frequency.
The Lowpass Resonance Q (known as Lowpass Resonance Quality Factor) determines how much the filter's self-resonance is dampened. Higher Lowpass Resonance Q indicates a lower rate of energy loss i.e. the oscillations die out more slowly.
The Audio Low Pass Filter has a Rolloff curve associated with it, making it possible to set Cutoff Frequency over distance between the AudioSource and the AudioListener.
Cutoff Frequency | Lowpass cutoff frequency in hz. 10.0 to 22000.0. Default = 5000.0. |
Lowpass Resonance Q | Lowpass resonance Q value. 1.0 to 10.0. Default = 1.0. |
To add a low pass filter to a given audio source just select the object in the inspector and then select Component->Audio->Audio Low Pass Filter.
Page last updated: 2012-08-08