DIAPHRAGM OR DUST CAP AND SPEAKER UNIT

To provide a diaphragm and a dust cap that emit sound waves, and an electrodynamic speaker unit that is equipped with the same, prevents the influence of a divided vibration mode from appearing, prevents the peak dip in the sound pressure frequency characteristics from increasing, and has excellent...

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Bibliographic Details
Main Authors KUMO HIROYASU, INOUE TAKESHI, HISAMOTO TEISHUN, YOSHIMURA SO
Format Patent
LanguageEnglish
Japanese
Published 05.03.2020
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:To provide a diaphragm and a dust cap that emit sound waves, and an electrodynamic speaker unit that is equipped with the same, prevents the influence of a divided vibration mode from appearing, prevents the peak dip in the sound pressure frequency characteristics from increasing, and has excellent playback sound quality.SOLUTION: In a speaker unit 1, a diaphragm 10 or a dust cap 20 has a concave portion 14 and a convex portion 15 simulating an insect wing on at least one surface of a diaphragm portion 13 that emits a sound wave. The concave portion 14 and the convex portion 15 are formed on the basis of data obtained by measuring the actual shape of an insect wing vein, or data of a Voronoi diagram simulating the insect wing vein.SELECTED DRAWING: Figure 1 【課題】音波を放射する振動板およびダストキャップ並びにこれを備えて構成される動電型のスピーカーユニットにおいて、分割振動モードの影響が現れて音圧周波数特性上のピーク・ディップが大きくなることを防いで、再生音質に優れるスピーカーユニットを提供する。【解決手段】スピーカーユニット１において、振動板１０またはダストキャップ２０は、音波を放射する振動板部１３の少なくとも一方面に昆虫の翅を模した凹部１４、凸部１５が形成されている。凹部１４、凸部１５は、昆虫の実際の翅脈の形状を測定したデータ、または、昆虫の翅脈を模したボロノイ図のデータ、に基づいて形成されている。【選択図】図１
Bibliography:Application Number: JP20180162233