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|Cutoff Frequency||Lowpass cutoff frequency in Hertz (range 0.0 to 22000.0, default = 5000.0).|
|Lowpass Resonance Q||Lowpass resonance quality value (range 1.0 to 10.0, default = 1.0).|
The Lowpass Resonance Q (short for Lowpass Resonance Quality Factor) determines how much the filter’s self-resonance is dampened. Higher lowpass resonance quality indicates a lower rate of energy loss, that is 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.
Sounds propagates very differently given the environment. For example, to compliment a visual fog effect add a subtle low-pass to the Audio ListenerA component that acts like a microphone, receiving sound from Audio Sources in the scene and outputting to the computer speakers. More info
See in Glossary. The high frequencies of a sound being emitted from behind a door will be filtered out by the door and so won’t reach the listener. To simulate this, simply change the Cutoff Frequency when opening the door.