Inline acoustic metamaterial tuning system
AssigneeDan Clark Audio, Inc.
InventorsDaniel William Clark, Robert Jason Egger
Life of this patent
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Abstract
An acoustic diffusion and absorption system can have an ear coupler consisting of a transducer and an ear pad defining a volume surrounding an ear of a user. An insert may be positioned inline between the transducer and the ear of the user to fill at least a portion of the volume defined by the ear pad with the insert having a thickness and a plurality of channels. A first channel of the plurality of channels may continuously extending through the insert to form a waveguide while a second channel of the plurality of channels can have a length that is less than the thickness of the insert to form a resonator.
Claims20
A headphone comprising:
- an ear coupler comprising a transducer and ear pad, the ear pad defining a volume surrounding an ear of a user;
- and
- an insert positioned inline between the transducer and the ear of the user to fill at least a portion of the volume defined by the ear pad, the insert having a thickness and a plurality of channels, a first channel of the plurality of channels continuously extending through the insert to form a waveguide, a second channel of the plurality of channels having a length that is less than the thickness of the insert to form a resonator.
An apparatus comprising:
- an ear coupler housing a transducer and connected to an ear pad;
- and
- an array of channels controlling operation of the transducer by forming at least one resonator
A method comprising:
- positioning a first insert in a coupler and inline between a transducer and an ear of a user, the insert comprising a first plurality of channels arranged to reduce an amplitude of standing waves of acoustic signals created by the transducer;
- generating acoustic signals with the transducer, the acoustic signals passing through the first insert, the first insert having an acoustic impedance provided by the plurality of channels to create a predetermined acoustic damping;
- removing the first insert from the ear coupler;
- attaching a second insert into the ear coupler, the second insert having a second plurality of channels arranged to provide a different frequency response than the first plurality of channels.
Dependencies are inferred from the claim text.