High Pass Filters

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Revision as of 21:20, 7 March 2011 by Ewkang (talk)
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Note:This will not cover audio scripting--please refer to the "Sound" section under "Programming".

Extra Resources:


Definition: A high pass filter is like the low pass filter except it attenuates mid to low frequencies while passing high frequencies.


  1. Select the audio source that you wish to apply the high pass filter to.
  2. Select Component -> Audio -> Audio High Pass Filter. Keep in mind that, unlike the low pass filter, the high pass filter does not appear as a parameter in the Listener graph. It can still be controlled via scripting.
  3. Like the low pass filter, the high pass filter has two parameters:
  • Cutoff Frequency - The frequency (between 10 and 22,000 Hz) at which all lower frequencies will be cut. (For instance: putting the value at 1000 means that every frequency below 1000 Hz will be attenuated)
  • Highpass Resonance Q (Low Resonance Quality Factor) - The value (between 1.0 to 10.0) determines how much the filter's self-resonance is dampened. In other words, a high value would mean a lower rate of energy loss, so the sound's oscillations would die out more slowly.