US 11,812,219 B2
Asymmetry sound absorbing system via shunted speakers
Xiaopeng Li, Ann Arbor, MI (US); Ziqi Yu, Ann Arbor, MI (US); Jae Seung Lee, Ann Arbor, MI (US); Danil V. Prokhorov, Canton, MI (US); and Taehwa Lee, 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 Jul. 23, 2021, as Appl. No. 17/384,125.
Prior Publication US 2023/0032254 A1, Feb. 2, 2023
Int. Cl. H04R 1/28 (2006.01); H04R 3/02 (2006.01); G10K 11/02 (2006.01); G10K 11/16 (2006.01); G10K 11/18 (2006.01); H04R 1/30 (2006.01); H04R 9/06 (2006.01)
CPC H04R 1/288 (2013.01) [H04R 1/2892 (2013.01); H04R 1/30 (2013.01); H04R 3/02 (2013.01); H04R 9/06 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system comprising:
a waveguide having an open end for receiving an incoming acoustic wave and wall portions defining a first port and a second port;
a first electroacoustic absorber mounted to the first port and being electrically connected to a shunting circuit; and
a second electroacoustic absorber mounted to the second port and being electrically connected to an open circuit.