Wind noise reduction filter

摘要

A noise reduction filter for a microphone reducing unwanted wind noise includes a first filter element made of a first material configured to filter out wind noise, wherein the first filter element comprises a first surface configured to face towards a first microphone inlet of a first sound tube, the first microphone inlet having a central axis, and a second filter element made of a second material configured to be impermeable to wind, wherein the second filter element is configured to be positioned at the central axis so that a first part of a sound wave travelling towards the first microphone inlet is prevented by the second filter element from passing through a second surface of the first filter element into the first filter element, wherein the second surface is configured to be positioned at the central axis.

主权项

1. A noise reduction filter for a microphone reducing unwanted wind noise, comprising:
a first filter element made of a first material configured to filter out wind noise, wherein the first filter element comprises a first surface configured to face towards a first microphone inlet of a first sound tube, the first microphone inlet having a central axis; and a second filter element made of a second material configured to be impermeable to wind; wherein the second filter element is configured to be positioned at the central axis so that a first part of a sound wave travelling towards the first microphone inlet is prevented by the second filter element from passing through a second surface of the first filter element into the first filter element, wherein the second surface is configured to be positioned at the central axis; wherein the first filter element further comprises a sound receiving surface allowing a second part of the sound wave to propagate into the first filter element without interacting with the second filter element; and wherein the noise reduction filter further comprises:
a third filter element configured to filter out wind noise, wherein the third filter element comprises a first surface configured to face towards a second microphone inlet of a second sound tube, the second microphone inlet having a central axis;wherein the second filter element is configured to prevent a third part of the sound wave from passing through a second surface of the third filter element into the third filter element, wherein the second surface of the third filter element is configured to be positioned at the central axis of the second microphone inlet; andwherein the third filter element further comprises a sound receiving surface allowing a fourth part of the sound wave to propagate into the third filter element without interacting with the second filter element.