Method for suppressing vibration coupled signals in a microphone for flight recorders

WO2024049739A9PCT designated stage expired Publication Date: 2024-12-26L3 TECHNOLOGIES INC
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
PCT/US2023/031242
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2022-08-29
Filing Date
2023-08-28
Publication Date
2024-12-26

Smart Images

  • Figure US2023031242_26122024_PF_FP_ABST
    Figure US2023031242_26122024_PF_FP_ABST
Patent Text Reader

Abstract

An aircraft recorder system is provided in which a vibration sensor including at least one of a micro-electromechanical systems (MEMS) microphone and a MEMS accelerometer. The system further includes a cockpit voice recorder (CVR) and an active microphone. The active microphone and the vibration sensor each output signals to a signal processor including a subtractor configured to output, to the CVR, a signal that is a result of a subtraction of the signal from the vibration sensor from the signal from the active microphone.
Need to check novelty before this filing date? Find Prior Art