公开(公告)号：US20240312474A1

公开(公告)日：2024-09-19

申请号：US18460627

申请日：2023-09-04

Applicant: Dopple IP B.V

Inventor： Jacobus Cornelis HAARTSEN

IPC: G10L21/0232 ,  G10L25/84 ,  H04R1/10 ,  H04R1/40 ,  H04R3/00

CPC classification number: G10L21/0232 ,  G10L25/84 ,  H04R1/1041 ,  H04R1/1075 ,  H04R1/406 ,  H04R3/005 ,  G10L2021/02166 ,  H04R2410/01 ,  H04R2420/07

Abstract: A voice pick-up arrangement (500) provides improved voice performance in a wireless headset (12) exposed to loud environmental noise. A air microphone (220) and a vibration sensor (230) are used for sound pickup. An adaptive filter (450) may be used to subtract the noise from the vibration sensor output in a subtractor (460), thus producing a clear voice signal. A noise level may be monitored and be used for determining whether the adaptive filter is used or for determining the coefficients of the adaptive filter (450). A beam-forming array may be used to suppress a voice component of the picked-up air microphone audio signal.

公开(公告)号：US20220174394A1

公开(公告)日：2022-06-02

申请号：US17106446

申请日：2020-11-30

Applicant: Dopple IP B.V.

Inventor： Jacobus Cornelis HAARTSEN ,  Aalbert STEK

IPC: H04R1/10 ,  H04R3/00

Abstract: A dual-microphone arrangement (300) provides improve voice performance in a wireless headset (12). A vibration sensor (1130) is used for voice pickup and will add low-frequency voice audio content in windy conditions. An equalizer (810) is used to restore low-frequency voice audio content in wind-free conditions. Depending on the measured wind power, the output will derive more signal from the equalizer (810) or more signal from the vibration sensor (1130).