Patent ID: 11883847
Assignee: ULTRALEAP LIMITED
Field: Audio-visual technology (Electrical engineering)
Classification: CPC B  G  H  F | IPC B  F  H

Claim 1:
2. An acoustic matching structure according to claim 1,
wherein, in operation, the cavity supports a resonant frequency of acoustic oscillation in the fluid, wherein: the resonant frequency determines a wavelength defined by, λ
   =
   
    c
    f
   
  
  ,
 

 where c is the speed of sound in the fluid; where hcavity is substantially less than half of said wavelength and
where rcavity is substantially equal to or greater than half of said wavelength;
at least one aperture is placed in within the at least one wall; and
at least one acoustic transducing element is located within the at least one wall;
such that the resulting acoustic cavity constrains the acoustic medium in the cavity to induce a resonant mode that substantially improves the transfer of acoustic energy from the transducing element to the medium outside the aperture.