Patent ID: 11889262
Assignee: EPIX AUDIO, LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A device comprising:
a first driver to output first acoustic energy within a first frequency band;
a second driver to output second acoustic energy within a second frequency band;
a third driver to output third acoustic energy within a third frequency band;
a first waveguide associated with the first driver, the first waveguide having a larger section with a first top opening positioned to receive the first acoustic energy from the first driver and a smaller section with a first bottom opening positioned to output the first acoustic energy, wherein a cutoff frequency of sound propagating in the first waveguide may be defined as the cutoff frequency equal to a first value divided by a second value, the first value equal to a Bessel function coefficient times a speed of sound propagations and the second value equal to it times a diameter of the first waveguide; and
a second waveguide associated with the second driver and the third driver, the second waveguide having a larger section with a second top opening positioned to receive the second acoustic energy from the second driver and the third acoustic energy from the third driver and a smaller section with a second bottom opening positioned to output the second acoustic energy and the third acoustic energy.