公开(公告)号：US20220225015A1

公开(公告)日：2022-07-14

申请号：US17706487

申请日：2022-03-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Rongrong Wu ,  Yong Zheng ,  Guozhen Ma ,  Naotaka Tsunoda ,  Xiansheng Li

IPC: H04R1/10

Abstract: Embodiments of this application disclose a noise reduction headset. A branch pipe is disposed in the headset to connect a sound cavity inside the headset and an external environment. The branch pipe has a low-pass filter function to filter out high-band noise entering the sound cavity from the external environment, so that impact on sound quality inside the sound cavity that is caused by noise in the external environment is reduced, thereby implementing passive noise reduction.

公开(公告)号：US12167194B2

公开(公告)日：2024-12-10

申请号：US17827719

申请日：2022-05-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Guozhen Ma ,  Rongrong Wu ,  Yong Zheng ,  Yu Zhang ,  Chengxia Ji

IPC: H04R5/033 ,  H04R1/10

Abstract: Embodiments provide an ear pad having an annular structure. The ear pad includes an inner layer and an outer layer covering the inner layer. The inner layer and the outer layer are separate of annular structures and are separated by a first medium layer. The inner layer coats a second medium layer. Acoustic impedance of the first medium layer is different from acoustic impedance of the inner layer and the outer layer. The ear pad is configured to close a front cavity space between a housing and an ear of a user, thereby preventing sound leakage and reducing external noise entering the ear of the user. Various ear pad embodiments provide a double-layer structure including the inner layer and the outer layer separated by the first medium layer.

公开(公告)号：US12114124B2

公开(公告)日：2024-10-08

申请号：US17706487

申请日：2022-03-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Rongrong Wu ,  Yong Zheng ,  Guozhen Ma ,  Naotaka Tsunoda ,  Xiansheng Li

IPC: H04R1/10 ,  H04R1/28 ,  H04R1/34 ,  H04R5/033 ,  H04R25/00

CPC classification number: H04R1/1083 ,  H04R1/1008 ,  H04R1/1033 ,  H04R1/105 ,  H04R1/1075 ,  H04R1/1016 ,  H04R1/2826 ,  H04R1/347 ,  H04R5/033 ,  H04R25/60 ,  H04R2205/022

Abstract: Embodiments of this application disclose a noise reduction headset. A branch pipe is disposed in the headset to connect a sound cavity inside the headset and an external environment. The branch pipe has a low-pass filter function to filter out high-band noise entering the sound cavity from the external environment, so that impact on sound quality inside the sound cavity that is caused by noise in the external environment is reduced, thereby implementing passive noise reduction.

公开(公告)号：US20220295172A1

公开(公告)日：2022-09-15

申请号：US17827719

申请日：2022-05-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Guozhen Ma ,  Rongrong Wu ,  Yong Zheng ,  Yu Zhang ,  Chengxia Ji

IPC: H04R1/10

Abstract: Embodiments provide an ear pad having an annular structure. The ear pad includes an inner layer and an outer layer covering the inner layer. The inner layer and the outer layer are separate of annular structures and are separated by a first medium layer. The inner layer coats a second medium layer. Acoustic impedance of the first medium layer is different from acoustic impedance of the inner layer and the outer layer. The ear pad is configured to close a front cavity space between a housing and an ear of a user, thereby preventing sound leakage and reducing external noise entering the ear of the user. Various ear pad embodiments provide a double-layer structure including the inner layer and the outer layer separated by the first medium layer.