Sound film and speaker employing same

A diaphragm includes a central portion in a center of the diaphragm and an external portion surrounding the central portion. The central portion includes a central section in a center of the central portion, a peripheral section at an outer periphery of the central portion and a connecting section b...

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Bibliographic Details
Main Author CHEN HUANGMIAO
Format Patent
LanguageChinese
English
Published 27.08.2014
Subjects
DEAF-AID SETS
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS
PUBLIC ADDRESS SYSTEMS
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Summary:A diaphragm includes a central portion in a center of the diaphragm and an external portion surrounding the central portion. The central portion includes a central section in a center of the central portion, a peripheral section at an outer periphery of the central portion and a connecting section between the central section and the peripheral section. The peripheral section forms at least one protrusion.
Bibliography:Application Number: CN200910303056