公开(公告)号：US20230225905A1

公开(公告)日：2023-07-20

申请号：US18001126

申请日：2021-06-04

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Oscar Kårekull

IPC: A61F11/14 ,  A61F11/12

CPC classification number: A61F11/14 ,  A61F11/12

Abstract: A hearing protection device is presented. The hearing protection device includes a first and second earmuffs (202, 260, 310) connected by a connector (270, 320). The first and second earmuffs are configured to provide level dependent hearing protection. The first earmuff includes a microphone element (204, 330) having a microphone entry (264), positioned on an exterior of a housing of the first earmuff (260), the microphone element (204, 330) being configured to receive an ambient sound. The first earmuff also includes a processor configured to process the ambient sound using a level dependent function. The first earmuff also includes a speaker configured to broadcast the processed ambient sound in an interior of the first earmuff. The first earmuff also includes an asymmetrical windscreen (262) configured to enclose the microphone element. The windscreen is coupled to the housing of the first earmuff.

公开(公告)号：US12115039B2

公开(公告)日：2024-10-15

申请号：US18001126

申请日：2021-06-04

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Oscar Kårekull

IPC: A61F11/14 ,  A61F11/12 ,  H04R1/20

CPC classification number: A61F11/14 ,  A61F11/12

Abstract: A hearing protection device is presented. The hearing protection device includes a first and second earmuffs (202, 260, 310) connected by a connector (270, 320). The first and second earmuffs are configured to provide level dependent hearing protection. The first earmuff includes a microphone element (204, 330) having a microphone entry (264), positioned on an exterior of a housing of the first earmuff (260), the microphone element (204, 330) being configured to receive an ambient sound. The first earmuff also includes a processor configured to process the ambient sound using a level dependent function. The first earmuff also includes a speaker configured to broadcast the processed ambient sound in an interior of the first earmuff. The first earmuff also includes an asymmetrical windscreen (262) configured to enclose the microphone element. The windscreen is coupled to the housing of the first earmuff.