Title:
ELECTROACOUSTIC TRANSDUCER
Document Type and Number:
Japanese Patent JPH07193892
Kind Code:
A
Abstract:
PURPOSE: To suppress undesired resonance by covering a vibrating part of a transducer partially or entirely with a layer consisting of fibers partially coupled with each other and a layer consisting of fibers which are simply and partially brought into contact with each other. CONSTITUTION: An attenuation layer is supported by a vibration coil conductor by which vibration is attenuated at one side and supported on a position where an entire acoustic transducer is assembled at the other side. In the attenuation layer, a mesh body consisting of threads 10, 11 which are partially coupled with each other and threads 12, 13 which are simply and partially brought into contact with each other at a contact point 14, contribute to attenuation of diaphragm motion by mechanical friction. These fibers are simply and partially coupled with each other, as a result of a relative motion between each other and due to the air included in a mesh, energy is removed from the vibrating part by friction of fluid in motion of the mesh and a higher vibration mode is strongly attenuated.
Inventors:
HERUMUUTO SHIMATSUKU
Application Number:
JP27139294A
Publication Date:
July 28, 1995
Filing Date:
November 04, 1994
Export Citation:
Assignee:
AKG AKUSTISCHE KINO GERAETE
International Classes:
B32B27/12; H04R7/02; H04R7/12; H04R7/26; H04R9/04; (IPC1-7): H04R7/02; H04R7/26; H04R9/04
Attorney, Agent or Firm:
Toshio Yano (1 outside)
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