Acoustic transducer with vibration damping
First Claim
Patent Images
1. An acoustic transducer, comprising:
- a diaphragm made of a first material having a central area and an outer perimeter,at least one elongated opening in the diaphragm extending substantially radially along a portion of a length from the central area to the outer perimeter; and
a surround, comprised of a foam material having relatively higher damping characteristics than the first material, arranged circumferentially about the outer perimeter of the diaphragm, wherein the surround comprises at least one projection extending from the outer perimeter toward the central area of the diaphragm, wherein the at least one projection is arranged to cover the at least one elongated opening.
1 Assignment
0 Petitions
Accused Products
Abstract
Circumferential mode vibrations, in a diaphragm of an acoustic transducer, are damped by defining at least one elongated opening extending radially along a portion of a length from the central area to the outer perimeter being covered by a material having higher damping properties than the material of the cone.
20 Citations
6 Claims
-
1. An acoustic transducer, comprising:
-
a diaphragm made of a first material having a central area and an outer perimeter, at least one elongated opening in the diaphragm extending substantially radially along a portion of a length from the central area to the outer perimeter; and a surround, comprised of a foam material having relatively higher damping characteristics than the first material, arranged circumferentially about the outer perimeter of the diaphragm, wherein the surround comprises at least one projection extending from the outer perimeter toward the central area of the diaphragm, wherein the at least one projection is arranged to cover the at least one elongated opening. - View Dependent Claims (2, 3, 4, 5, 6)
-
Specification