Patent ID: 11877119
Assignee: SONICEDGE LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 2:
3. A speaker device comprising:
an acoustic medium;
at least one ultrasound source including a membrane comprised of a cavity and at least one source acoustic port and configured to generate an ultrasound signal; and
a time varying acoustic coupler with an input acoustic port and an output acoustic port, the acoustic coupler comprising at least a shutter and a blind, each positioned proximate to the membrane,
wherein the shutter is configured to operate at a shutter resonance frequency and the membrane is configured to operate at a frequency corresponding to the shutter resonance frequency,
wherein the ultrasound source acoustic port is connected to the time varying coupler input acoustic port and the time varying acoustic coupler output acoustic port is connected to the acoustic medium;
wherein the time varying acoustic coupler is configured to be electrically activated to operate at its mechanical resonance; and
wherein the acoustic signal at the output port includes an audio signal.