US 12,464,272 B2
Micro-speaker for ear-worn hearing device
Charles B. King, Oak Park, IL (US); Thomas E. Miller, Arlington Heights, IL (US); and Mohammad Mohammadi, Rolling Meadows, IL (US)
Assigned to Knowles Electronics, LLC, Itasca, IL (US)
Filed by Knowles Electronics, LLC, Itasca, IL (US)
Filed on Dec. 11, 2023, as Appl. No. 18/536,169.
Prior Publication US 2025/0193563 A1, Jun. 12, 2025
Int. Cl. H04R 1/02 (2006.01)
CPC H04R 1/02 (2013.01) [H04R 2201/003 (2013.01); H04R 2201/023 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A wearable micro-speaker comprising:
a body member comprising an acoustic conduit at least partially defining an acoustic path between first and second exterior medium spaces between which the body member is located;
a first acoustic transducer located between the acoustic conduit and the first exterior medium space;
a second acoustic transducer located between the acoustic conduit and the second exterior medium space;
a second acoustic aperture between the acoustic conduit and the second exterior medium space, the second acoustic aperture more or less obstructed by operation of the second acoustic transducer,
wherein concurrent operation of the first and second acoustic transducers generates an acoustic audio signal that propagates between the first and second exterior medium spaces;
an acoustic vent between the acoustic conduit and the second exterior medium space, an acoustic impedance of the acoustic vent independent of the operation of the second acoustic transducer.