公开(公告)号：US20200236462A1

公开(公告)日：2020-07-23

申请号：US16733020

申请日：2020-01-02

申请人： Onkyo Corporation

发明人： Norimasa KITAGAWA ,  Mitsuhiko TOKUDA ,  Yoshnori NAKANISHI ,  Ryuta SHIGEMATSU ,  Koichi SADAIE ,  Yoshitada TAKESHIMA

IPC分类号： H04R1/34 ,  H04R9/06 ,  H04R7/12 ,  H04R9/04 ,  G10K11/20

摘要： A diffuser which forms a first acoustic passage that sound waves propagate and which radiates the sound waves to an outer diameter direction between a diaphragm and an annular conical surface of a first reflection member, and forms a second acoustic passage the sound waves which pass the opening of the first reflection member propagate and which radiates the sound waves to an outer diameter direction between the annular concave surface of the first reflection member and a conical surface of a second reflection member.