公开(公告)号：US10484769B2

公开(公告)日：2019-11-19

申请号：US16234786

申请日：2018-12-28

Applicant: AAC Technologies Pte. Ltd.

Inventor： Rui Zhang

IPC: H04R1/02 ,  H04R1/28 ,  H04R31/00

Abstract: The present disclosure provides a speaker box, including a housing having an accommodation space, an acoustic device accommodated in the accommodation space, a first air-permeable separation component, a second air-permeable separation component. The acoustic device separates the accommodation space into a front cavity and a rear cavity. The first air-permeable separation component is fixed inside the housing and separates the rear cavity into a first rear cavity and a second rear cavity in air communication with each other. The acoustic device is located in the first rear cavity. The second rear cavity is filled with acoustic absorption particles. The second air-permeable separation component separates the second rear cavity into at least two rear sub-cavities in air communication with each other. Types of the acoustic absorption particles filled in two of the rear sub-cavities are not completely the same. Acoustic performance of the speaker box in the present disclosure is better.

公开(公告)号：US20240223966A1

公开(公告)日：2024-07-04

申请号：US18395782

申请日：2023-12-26

Applicant: AAC Technologies Pte. Ltd.

Inventor： Yuwei Liu ,  Colin Robert Jenkins ,  Rui Zhang

IPC: H04R19/04 ,  B81B3/00 ,  H04R7/04 ,  H04R7/18

CPC classification number: H04R19/04 ,  B81B3/0075 ,  H04R7/04 ,  H04R7/18 ,  B81B2201/0257 ,  B81B2203/0127 ,  H04R2201/003

Abstract: A MEMS microphone, includes a substrate with a back cavity, and a capacitive system arranged on the substrate, the capacitive includes a back plate and a diaphragm, a reinforcing portion is located between the diaphragm and the substrate, a projection of an inner surface of the reinforcing portion along a vibration direction of the diaphragm is flush with an inner surface of the back cavity or located in the back cavity, the reinforcing portion includes an etched barrier wall and a sacrificial layer located within the etched barrier wall. Compared with the related art, the MEMS microphone disclosed by the present disclosure could improve the reliability.

公开(公告)号：US20190253779A1

公开(公告)日：2019-08-15

申请号：US16234786

申请日：2018-12-28

Applicant: AAC Technologies Pte. Ltd.

Inventor： Rui Zhang

IPC: H04R1/02 ,  H04R31/00 ,  H04R1/28

Abstract: The present disclosure provides a speaker box, including a housing having an accommodation space, an acoustic device accommodated in the accommodation space, a first air-permeable separation component, a second air-permeable separation component. The acoustic device separates the accommodation space into a front cavity and a rear cavity.The first air-permeable separation component is fixed inside the housing and separates the rear cavity into a first rear cavity and a second rear cavity in air communication with each other. The acoustic device is located in the first rear cavity. The second rear cavity is filled with acoustic absorption particles. The second air-permeable separation component separates the second rear cavity into at least two rear sub-cavities in air communication with each other. Types of the acoustic absorption particles filled in two of the rear sub-cavities are not completely the same. Acoustic performance of the speaker box in the present disclosure is better.