US 11,776,521 B2
Sound absorbing structure having one or more acoustic scatterers attached to or forming a vehicle structure
Xiaoshi Su, Ann Arbor, MI (US); Debasish Banerjee, Ann Arbor, MI (US); Kai Aizawa, Toyota (JP); and Steven R. Sorenson, Ypsilanti, MI (US)
Assigned to Toyota Motor Engineering & Manufacturing North America, Inc., Plano, TX (US); and Toyota Jidosha Kabushiki Kaisha, Toyota (JP)
Filed by Toyota Motor Engineering & Manufacturing North America, Inc., Plano, TX (US); and Toyota Jidosha Kabushiki Kaisha, Toyota (JP)
Filed on Feb. 10, 2021, as Appl. No. 17/172,322.
Claims priority of provisional application 63/124,269, filed on Dec. 11, 2020.
Prior Publication US 2022/0189446 A1, Jun. 16, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G10K 11/172 (2006.01); B60R 13/08 (2006.01)
CPC G10K 11/172 (2013.01) [B60R 13/0861 (2013.01); B60R 13/0884 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A sound absorbing structure comprising:
a vehicle structure having a surface;
at least one acoustic scatterer coupled to the surface, the at least one acoustic scatterer having a resonant frequency;
the at least one acoustic scatterer having an opening and a plurality of channels;
the plurality of channels each have a channel open end and a channel terminal end, the channel open end being in fluid communication with the opening; and
wherein the plurality of channels extend parallelly along the length of the at least one acoustic scatterer and the volumes of each of the plurality of channels are substantially equal to each other.