Earplugs and method for attenuating sound

A sound and earplug technology, applied in earplugs, ear therapy, etc., can solve problems such as complex structure and poor adaptability, and achieve the effects of simple structure, improved directional hearing, and simplified structure

Active Publication Date: 2021-03-09
SONOVA AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The channel can be folded, but this can lead to a more complex structure and poorer adaptability, e.g., resonance tuning to a specific user

Method used

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  • Earplugs and method for attenuating sound
  • Earplugs and method for attenuating sound
  • Earplugs and method for attenuating sound

Examples

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Embodiment Construction

[0013] The present invention is described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown. In the figures, the absolute and relative sizes of systems, components, layers and regions may be exaggerated for clarity. Embodiments may be described with reference to schematic and / or cross-sectional illustrations of possible idealized embodiments and intermediate structures of the invention. In the specification and drawings, like numerals refer to like elements throughout. The terminology used to describe particular embodiments is not intended to be limiting of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. The term "and / or" includes any and all combinations of one or more of the associated listed items. It will be understood that the terms "comprising" and / or "comprising" specify the presence o...

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Abstract

An earplug (100) and method for attenuating sound (S). A sound channel (20) extends directly through the housing (10) to guide sound (S) within the ear canal. The vocal tract (20) includes a vocal tract segment (21) sized to fit at least partially within the ear canal. The vocal tract section (21) terminates on one side with a first outer opening (21a) to allow sound (S) to enter the ear canal. The other side of the vocal tract section (21) transitions into a first resonance volume (22) with a relatively wide diameter (A2). The second resonance volume (23) terminates on one side with a second outer opening (23a) and is separated from the first resonance volume (22) on the other side by a sound attenuating mesh (14). This provides resonant cavities (C1, C2) which compensate the attenuation of the network (14) over a broad high frequency (Fr) range.

Description

technical field [0001] The present invention relates to an earplug and a method for attenuating sound. Background technique [0002] Earplugs provide an easy way to dampen sounds from the external environment into the ear canal. For example, sound attenuation may be achieved by a sound dampening element such as a membrane or mesh disposed in the sound channel through the earplug. The mesh has the desired property of allowing air and water to ventilate or equalize therethrough. However, the acoustic function of the mesh generally manifests itself as increased attenuation at higher frequencies. This may be seen by the user as an occlusion effect, which is not desired. [0003] Excessive rejection at high frequencies can be (partially) compensated for by providing a channel with a specific tuned resonance frequency. However, to provide resonance at the desired frequency range, a long acoustic path may be required, typically about a quarter wavelength of the sound. The chan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F11/08
CPCA61F11/08A61F11/085
Inventor 皮特·赫拉德·范·T·霍夫约斯特·伦德特·洛德
Owner SONOVA AG
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