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US 2007/0183607 A1Published application
Directional listening device
AssigneeSound Optics Systems, Inc.
InventorsMichael Andrews, Carolyn Andrews, Terry Steffey
Life of this patent
Estimating the term…
Abstract
A directional listening device includes a reflector having a central axis, a microphone pointing toward the reflector and positioned along the central axis, and a collimator or shield surrounding the microphone and aligned with the reflector for improved directionality. The device also includes a laser pointing away from the reflector and a fitting for receiving a sighting device for aiming the listening device. Handles attached to the listening device have a resilient cover for noise reduction.
Claims20
A directional listening device comprising:
- an acoustic reflector having a central axis;
- a microphone positioned along said central axis;
- and
- an acoustic collimator surrounding said microphone and aligned with said acoustic reflector.
1 more element
A directional listening device comprising:
- an acoustic reflector having a parabolic cross-section, said parabolic cross-section defining a central axis and a focus;
- a microphone positioned substantially at said focus;
- an acoustic collimator in the form of a conic section having an axis aligned with said central axis;
- wherein said acoustic reflector has a first diameter approximately equal to the length of a chord through said focus and orthogonal to said central axis;
- and
- wherein said acoustic collimator has a second diameter substantially equal to said first diameter.
3 more elements
Dependencies are inferred from the claim text.