公开(公告)号：EP4258692A1

公开(公告)日：2023-10-11

申请号：EP21936680.4

申请日：2021-08-25

申请人： Goertek Inc.

发明人： PAN, Quanquan ,  LING, Fengguang ,  LI, Chun

IPC分类号： H04R9/02

摘要： Disclosed is a sound production device. The sound production device comprises a sound production unit, several magnetic sound-absorbing particles and a housing provided with an accommodating cavity, wherein the sound production unit is accommodated in the accommodating cavity, the sound production unit divides the accommodating cavity into a front cavity and a rear cavity, the magnetic sound-absorbing particles fill the front cavity and/or the rear cavity, and a magnetic attraction force is provided between the several magnetic sound-absorbing particles. In the present invention, the magnetic sound-absorbing particles are used to achieve a virtual increase effect of a resonant space of an acoustic rear cavity of the sound production device, and the magnetic sound-absorbing particles are mutually attracted and attached together, thereby limiting free flow between the particles, reducing the phenomenon of magnetic sound-absorbing particle breakage, and effectively protecting the acoustic performance of the sound production device.