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US RE48,921 E1Granted
Audio device comprising a microphone
AssigneeOticon A/S
InventorLars Tuborg Jensen
Life of this patent
Estimating the term…
Abstract
An audio device includes a microphone, a sound canal allowing sound to pass from the surroundings to the microphone, a signal path from the microphone to a receiver, and a current source, such that sounds received at the microphone may be enhanced and presented at the ear level of the user. A protection screen is provided at the sound canal, and includes a first surface which faces the surroundings and a second surface which faces the sound canal, and defines a slit-formed opening between the first surface and the second surface. The curvature between the first surface and the slit-formed opening is smooth and gradual, and a sharp edge is located at the transition between the second surface and the slit-formed opening.
Claims15
An audio device, comprising:
- an external casing;
- a microphone housed within the external casing, acoustically connected through a sound canal to an inlet port of the external casing;
- and
- a protective cover attached to the external casing above the inlet port, the protective cover including
- a first surface facing substantially toward exterior of the audio device, the first surface having a smooth curvature toward an elongated slit opening of the protective cover, and
- a second surface facing toward interior of the audio device, the second surface meeting the first surface along an edge defining the boundary of the elongated slit opening.
3 more elements
A protection screen for an audio device, comprising:
- a first surface facing substantially toward exterior of the audio device, the first surface having a smooth curvature toward an elongated slit opening;
- and
- a second surface facing toward interior of the audio device, the second surface meeting the first surface along an edge.
A protection screen for an audio device, comprising:
- a first surface facing substantially toward exterior of the audio device, the first surface having a smooth curvature toward an elongated slit opening;
- and
- a second surface facing toward interior of the audio device, the second surface meeting the first surface along an edge, wherein
- the audio device includes an exterior casing having two microphone inlets, the elongated slit opening extends above the two microphone inlets, defining an open space between the protection screen and an upper surface of the casing between the two inlets.
1 more element
An audio device, comprising:
- an external casing including two microphone inlets;
- at least one microphone housed within the external casing, acoustically connected through a sound canal to at least one of the two microphone inlets of the external casing;
- and
- a protective cover attached to the external casing above the two microphone inlets and defining an open space between itself and the external casing, the protective cover including
- a first surface facing substantially toward exterior of the audio device, the first surface having a smooth curvature toward an elongated slit opening of the protective cover,
- a second surface facing toward interior of the audio device, the second surface meeting the first surface along an edge defining the boundary of the elongated slit opening, and
- the elongated slit opening.
4 more elements
An audio device, comprising:
- an external casing including a shell, a chassis shaped to fit into the shell, and a battery frame, the external casing being configured for placement behind an ear of a user and having a plurality of inlet ports;
- at least two microphones housed within the external casing, each microphone being acoustically connected through a respective sound canal to a respective inlet port of the external casing so as to receive sound from outside the external casing, each microphone being centered within the external casing;
- the shell, the chassis, and the battery frame being configured to enclose an audio processing device and a battery;
- and
- a protective cover attached to the external casing above the inlet ports, the protective cover including
- two elongated slit openings, the two elongated slit openings are positioned on opposite sides of center of the protective cover,
- a first surface facing substantially toward the exterior of the audio device, the first surface having smooth curvatures at a transition toward said two elongated slit openings of the protective cover,
- a second surface facing toward the interior of the audio device, the second surface meeting the first surface along edges defining the boundaries of the two elongated slit openings, and
- wherein, below the protective cover, the inlet ports lead through respective sound canals in the chassis to the two microphones, and
- a space beneath the two elongated slit openings is provided under the two elongated slit openings, such that sound may pass through each of the two elongated slit openings at any point and reach each of the microphones.
7 more elements
An audio device, comprising:
- a shell being configured for placement behind an ear of a user;
- a chassis shaped to fit into the shell;
- two microphones housed within the chassis, the microphones being centered within the chassis;
- and
- a protection screen attached to the chassis, the protection screen including,
- two elongated slit openings, the elongated slit openings being positioned on opposite sides of a center of the protection screen,
- a first surface facing substantially toward the exterior of the audio device, the first surface having smooth curvatures at a transition toward said two elongated slit openings,
- a second surface facing toward the interior of the audio device, the second surface meeting the first surface along edges,
- an intermediate part between the two elongated slit openings,
- a sound entrance, below the protection screen, acoustically connecting each of the two elongated slit openings with each of the respective microphones, and
- a space beneath the two elongated slit openings is provided along the entire length of the two elongated slit openings, such that sound may pass through each of the two elongated slit openings at any point and reach each of the microphones.
8 more elements
An audio device, comprising:
- an external casing including two microphone inlets, the external casing including a shell and a chassis, the external casing being configured for placement behind an ear of a user;
- at least two microphones housed within the external casing, acoustically connected through a sound canal to at least one of the two microphone inlets of the external casing;
- at least two sound canals allowing sound to pass to the microphones;
- a signal path from the microphones to a speaker, such that sounds received at the microphones is enhanced and presented at the ear of the user;
- a protective cover attached to the external casing above the two microphone inlets and defining an open space between itself and the external casing, the protective cover including
- an elongated slit opening, said elongated slit opening having a length measurement that is larger than a width measurement
- a first surface facing substantially toward the exterior of the audio device, the first surface having a smooth curvature at a transition toward said elongated slit opening of the protective cover,
- a second surface facing toward the interior of the audio device, the second surface meeting the first surface along an edge defining the boundary of the elongated slit opening,
- a space beneath the elongated slit opening provided along a length of the elongated slit opening, such that sound may pass through the elongated slit opening located at any point on the protective cover to reach each of the microphones;
- an aperture between the protective cover and the chassis;
- and
- a sound entrance below the aperture and above one of the microphones.
9 more elements
Dependencies are inferred from the claim text.