Verfahren und Systeme zur Manipulationsdetektion einer Mikrofonvorrichtung

Details

Veröffentlichungs-Nr.

EP4765882

Anmeldetag

23. Dezember 2024

Veröffentlichung

24. Juni 2026

Rechtsraum

EP

Abstract

A computer-implemented method (1000) for tampering detection of a microphone device (100), the microphone device (100) comprising a microphone (110) arranged in a cavity (120) open to surroundings of the microphone device (110) via a microphone hole (122), the method (1000) comprising: receiving (1100) an audio signal (112) from the microphone (110); sampling (1200) the audio signal (112) for a low frequency band; detecting (1300) an event (140) comprising an exponentially decreasing absolute amplitude of the sampled audio signal (130) during a time period (P) of at least one second; and when detecting the event (140), outputting (1400) a tampering detection signal.

Anmelder

Firma

Axis AB

Land

🇸🇪 Schweden