Speaker system for a helmet
AssigneeCardo Systems, Inc.
InventorsGerhard Rudolf Pfaffinger, Markus Ewald Christoph
Life of this patent
Estimating the term…
Abstract
A helmet speaker system includes a helmet shell with a helmet impact liner inside the helmet shell. A hole is formed in the helmet impact liner, the hole penetrating through the helmet impact liner. A speaker is fixed in the hole. A space formed between the helmet impact liner and the interior sidewall of the helmet shell is directly acoustically connected to a rear portion of the speaker fixed in the hole. The speaker is configured to use the space to produce improved sound, particularly with respect to low frequency sound.
Claims30
A helmet, comprising:
- a helmet shell;
- a helmet impact liner disposed inside the helmet shell, the helmet impact liner having an interior side configured to face an interior of the helmet and an exterior side configured to face the helmet shell;
- a hole formed in the helmet impact liner, the hole connecting the interior side and the exterior side of the helmet impact liner;
- a speaker disposed in the hole, wherein a rear portion of the speaker is acoustically directly coupled through a cavity in the hole with the exterior side of the helmet impact liner, and a front portion of the speaker is acoustically directly coupled with the interior side of the helmet impact liner;
- and
- a space formed between at least a part of an interior sidewall of the helmet shell and the exterior side of the helmet impact liner, wherein the space is acoustically directly coupled with the rear portion of the speaker.
A method of improving bass response of a speaker disposed in a helmet, the method comprising:
- forming a hole through a helmet impact liner;
- mounting the speaker in the hole such that a rear portion of the speaker is acoustically directly linked with an exterior side of the helmet impact liner;
- forming a space between at least part of the exterior side of the helmet impact liner and an interior side of a helmet shell when mounting the helmet impact liner to the interior side of a helmet shell;
- directly acoustically coupling the space and a rear portion of the speaker mounted in the hole;
- and
- configuring the speaker to produce sound, wherein sound emitted from the rear portion of the speaker passes through the hole into the space.
A helmet, comprising:
- a helmet shell;
- a helmet impact liner disposed inside the helmet shell, the helmet impact liner having an interior side configured to face an interior of the helmet and an exterior side configured to face the helmet shell;
- and
- a hole formed in the helmet impact liner, the hole connecting the interior side and a cavity defined by the hole and a rear portion of a speaker disposed in the hole, wherein the rear portion of the speaker is acoustically directly coupled with the cavity, and a front portion of the speaker is acoustically directly coupled with the interior side of the helmet impact liner.
Dependencies are inferred from the claim text.