US 2020/0288244 A1 · METHOD FOR DETERMINING A RESPONSE FUNCTION OF A NOISE CANCELLATION ENABLED AUDIO DEVICE

Abstract

In a method for determining a response function of a noise cancellation enabled audio device, the audio device is placed onto a measurement fixture, wherein a loudspeaker of the audio device faces an ear canal representation of the measurement fixture. A first and a second response function between an ambient sound source and a test microphone located within the ear canal representation are measured while parameters of a noise processor of the audio device are set to a proportional transfer function with respective first and second gain factors being different from each other. A model response function is determined based on the first and the second response function and on the first and the second gain factor.

Claims19

Dependent claims

A method for determining a response function of a noise cancellation enabled audio device, in particular headphone, the method comprising:

placing the audio device onto a measurement fixture, wherein a loudspeaker of the audio device faces an ear canal representation of the measurement fixture;
measuring a first response function between an ambient sound source and a test microphone located within the ear canal representation while parameters of a noise processor of the audio device are set to a proportional transfer function with a first gain factor;
measuring a second response function between the ambient sound source and the test microphone while parameters of the noise processor are set to a proportional transfer function with a second gain factor being different from the first gain factor;
determining a model response function for the noise processor based on the first response function, the second response function and the first and the second gain factor.

1 more element

A method for determining a response function of a noise cancellation enabled audio device, in particular headphone, the method comprising:

placing the audio device onto a measurement fixture, wherein a loudspeaker of the audio device faces an ear canal representation of the measurement fixture;
measuring a first response function between an ambient sound source and a test microphone located within the ear canal representation while parameters of a noise processor of the audio device are set to a predefined transfer function in combination with a first gain factor;
measuring a second response function between the ambient sound source and the test microphone while parameters of the noise processor are set to the predefined transfer function in combination with a second gain factor being different from the first gain factor;
determining a model response function for the noise processor based on the predefined transfer function, the first response function, the second response function and the first and the second gain factor.

1 more element

Dependencies are inferred from the claim text.

Method for determining a response function of a noise cancellation enabled audio device

Life of this patent

Method for determining a response function of a noise cancellation enabled audio device

Life of this patent

Abstract

Claims19