US 12,308,009 B2
Magnetic coupling for sound transmission
Taehwa Lee, Ann Arbor, MI (US); and Hideo Iizuka, Ann Arbor, MI (US)
Assigned to Toyota Motor Engineering & Manufacturing North America, Inc., Plano, TX (US)
Filed by Toyota Motor Engineering & Manufacturing North America, Inc., Plano, TX (US)
Filed on Apr. 16, 2024, as Appl. No. 18/636,374.
Application 18/636,374 is a division of application No. 17/976,278, filed on Oct. 28, 2022, granted, now 11,978,428.
Application 17/976,278 is a division of application No. 16/862,754, filed on Apr. 30, 2020, granted, now 11,527,229, issued on Dec. 13, 2022.
Prior Publication US 2024/0274109 A1, Aug. 15, 2024
Int. Cl. G10K 11/172 (2006.01); G10K 11/34 (2006.01)
CPC G10K 11/172 (2013.01) [G10K 11/34 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A broadband, magnetoacoustic coupling system, comprising:
a first magnetoacoustic transceiver pair, each magnetoacoustic transceiver of the first pair having a first resonance frequency and comprising an elastic membrane and a magnet attached to the membrane, the magnetoacoustic transceivers of the first pair separated by a separation space;
a second magnetoacoustic transceiver pair, each magnetoacoustic transceiver of the second pair having a second resonance frequency different from the first resonance frequency, each magnetoacoustic transceiver of the second pair an elastic membrane and a magnet attached to the membrane, the magnetoacoustic transceivers of the first pair separated by the separation space; and
an acoustic barrier, disposed between magnetoacoustic transceivers of the first and second magnetoacoustic transceiver pairs,
wherein acoustic oscillation at one magnetoacoustic transceiver of the first or second magnetoacoustic transceiver pairs induces an oscillation in the other magnetoacoustic transceiver of the pair, at the same frequency, via magnetic coupling.