US 7,894,621 B2
Audio device comprising a microphoneGeneral
US 7,894,621 B2
Audio device comprising a microphone
Tech Center:
2600 Communications
Examiner:
Brian Ensey
Art Unit:
2614 Computer Graphic Processing, 3D Animation, Display Color Attribute, Object Processing, Hardware and Memory
Inventors:
Lars Tuborg Jensen
Assignee:
Priority:
09/08/05
Filed:
09/06/06
Granted:
02/22/11
Expiration:
12/20/29
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.
Cooperative Patent Classification (CPC)
H04H04R2205/041H04R