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Passive and active virtual height filter systems for upward firing drivers

  • US 10,313,793 B2
  • Filed: 06/02/2015
  • Issued: 06/04/2019
  • Est. Priority Date: 06/03/2014
  • Status: Active Grant
First Claim
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1. An apparatus comprising:

  • an interface to a speaker system having at least an upward-firing driver transmitting reflected sound waves relative to a direct-firing driver; and

    a virtual height filter applying a frequency response curve to a signal transmitted to the upward-firing driver to create a target transfer curve that imparts a frequency response to the reflected sound waves that accentuates a perception of virtual height to a listener in the listening environment.

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