公开(公告)号：US10805732B2

公开(公告)日：2020-10-13

申请号：US16531095

申请日：2019-08-04

申请人： Onkyo Corporation

发明人： Takeru Inoue ,  Hajime Yoshimura ,  Hiroyasu Kumo ,  Sadatoshi Hisamoto

IPC分类号： H04R9/06 ,  H04R7/12 ,  H04R9/02

摘要： There is provided a diaphragm or a dust cap configured to emit a sound wave and an electrodynamic speaker unit including the diaphragm or the dust cap. The speaker unit is configured so that a great peak dip of sound pressure frequency characteristics due to influence of a divided vibration mode can be prevented and excellent reproduced sound quality can be provided. In the diaphragm or the dust cap, a recessed-raised portion imitating a wing of an insect is formed at least on one surface of a diaphragm portion configured to emit a sound wave. Preferably, the recessed-raised portion is formed based on data obtained by measurement of an actual shape of a wing vein of the insect or data of a Voronoi diagram imitating the wing vein of the insect.