Mikrofon und Verfahren zur Prüfung eines Mikrofons

Details

Veröffentlichungs-Nr.

EP3376778

Aktenzeichen

EP17160562

Anmeldetag

13. März 2017

Veröffentlichung

12. August 2020

Erteilung

12. August 2020

Rechtsraum

EP

IPC

H04R19/00H04R29/00

Abstract

The microphone comprises a housing (1, 2), which has an inner volume (12) filled with a gas, an opening (10) of the housing, an acoustic sensor (3) arranged in the housing, a diaphragm (13) of the acoustic sensor located above the opening, and a heater (14) in the inner volume. The acoustic sensor may especially comprise a microelectromechanical system. The gas is heated from inside the inner volume to increase the pressure and generate a corresponding signal of the acoustic sensor (3). This signal can be used for self-calibration of the sensitivity or for self-diagnostics to check the function of the microphone.

Anmelder

Firma

ams International AG

Land

🇨🇭 Schweiz

Fachgebiete