Method for suppressing vibration coupled signals in a microphone for flight recorders
US12185065B2 · kind B2 · utility
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6Claims
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Key dates
| Filing date | Aug 29, 2022 |
| Grant date | Dec 31, 2024 |
| Priority date | — |
| Expiry date | Feb 22, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/13
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.