US 2025/0063288 A1 · OPEN WEARABLE ACOUSTIC DEVICE AND ACTIVE NOISE REDUCTION METHOD

Abstract

An open wearable acoustic device and an active noise reduction method are provided. The acoustic device includes a second sound sensor module, a speaker, and a noise reduction circuit. A first preset relationship is satisfied between a transfer function from the speaker to the second sound sensor module and a transfer function from the speaker to an eardrum, and the first preset relationship is independent of a pose of the acoustic device. The noise reduction circuit adjusts a noise reduction parameter based on a second sound signal and the first preset relationship, and performs active noise reduction based on the adjusted noise reduction parameter. The noise reduction parameter is adjusted based on the second sound signal and the first preset relationship. Hence, the noise reduction parameter complies with an accurate noise reduction aim, and a noise reduction effect of active noise reduction may be improved.

Claims20

Dependent claims

An open wearable acoustic device, comprising:

a support member;
a speaker, physically connected to the support member, wherein an open space is formed between the speaker and a eardrum of a user when the acoustic device is worn on the user's head;
a second sound sensor module, physically connected to the support member, and configured to capture a second sound and generate a second sound signal, wherein a first preset relationship is satisfied between a transfer function from the speaker to the second sound sensor module and a transfer function from the speaker to the eardrum, and the first preset relationship is independent of a pose of the acoustic device;
and
a noise reduction circuit, configured to:
obtain the second sound signal from the second sound sensor module,
adjust a noise reduction parameter of the noise reduction circuit based on the second sound signal and the first preset relationship to obtain an adjusted noise reduction parameter, and
perform active noise reduction based on the adjusted noise reduction parameter.

5 more elements

An active noise reduction method for an open wearable acoustic device, wherein the acoustic device includes:

a support member,
a speaker, physically connected to the support member, wherein an open space is formed between the speaker and a eardrum of a user when the acoustic device is worn on the user's head,
a second sound sensor module, physically connected to the support member, and configured to capture a second sound and generate a second sound signal, wherein a first preset relationship is satisfied between a transfer function from the speaker to the second sound sensor module and a transfer function from the speaker to the eardrum, and the first preset relationship is independent of a pose of the acoustic device, and
a noise reduction circuit;
the method comprises the following steps performed by the noise reduction circuit:
obtaining the second sound signal from the second sound sensor module;
adjusting a noise reduction parameter of the noise reduction circuit based on the second sound signal and the first preset relationship to obtain an adjusted noise reduction parameter;
and
performing active noise reduction based on the adjusted noise reduction parameter.

6 more elements

Dependencies are inferred from the claim text.

Open wearable acoustic device and active noise reduction method

Life of this patent

Open wearable acoustic device and active noise reduction method

Life of this patent

Abstract

Claims20