US 11,769,510 B2 · Microphone authentication

Abstract

This application relates to microphone authentication apparatus for verifying whether or not an audio signal originated at a microphone. The microphone authentication apparatus has a comparison block configured to receive a first signal indicative of one or more spectral parameters of at least part of an audio signal to be verified, and compare the one or more spectral parameters to one or more predetermined characteristic microphone parameters relating to a characteristic resonance associated with an acoustic port of a microphone. The first signal may be an audio signal and the microphone authentication apparatus may have a feature extract module for determining the spectral parameters. Based on the comparison determination block may whether the audio signal originated from a microphone and may send a verification signal to a voice biometric module.

Claims20

Dependent claims

An authentication apparatus for verifying whether a received audio signal was generated by a microphone in response to an utterance of a user;

the apparatus comprising:
an authenticator configured to receive the audio signal and to analyze the audio signal to determine whether the audio signal comprises any resonance signal components in a first frequency band corresponding to a frequency range for an expected first characteristic resonance of the microphone;
wherein the authenticator is configured to not verify the audio signal if the resonance signal components identified in the first frequency range do not match the expected first characteristic resonance of the microphone;
and
wherein the audio authenticator is implemented as part of or integrated with multiple processors.

2 more elements

Dependencies are inferred from the claim text.

Microphone authentication

Life of this patent

Microphone authentication

Life of this patent

Abstract

Claims20