![]() ![]() H04R1/28- Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g.H04R1/22- Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only.H04R1/20- Arrangements for obtaining desired frequency or directional characteristics.H04R1/00- Details of transducers, loudspeakers or microphones. ![]() adapted to produce maximum output at a predetermined frequency ![]() H04R17/00- Piezo-electric transducers Electrostrictive transducers.H04R- LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS DEAF-AID SETS PUBLIC ADDRESS SYSTEMS.229920001707 polybutylene terephthalate Polymers 0.000 description 1.229910052451 lead zirconate titanate Inorganic materials 0.000 description 1.HFGPZNIAWCZYJU-UHFFFAOYSA-N 0.000 description 1 HFGPZNIAWCZYJU-UHFFFAOYSA-N Lead zirconate titanate Chemical compound.229920000122 Acrylonitrile butadiene styrene Polymers 0.000 description 1. ![]() 239000000057 synthetic resin Substances 0.000 description 3.230000005540 biological transmission Effects 0.000 description 10.239000000463 material Substances 0.000 claims description 3.239000000470 constituent Substances 0.000 claims description 3.Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by TDK Corp filed Critical TDK Corp Priority to JP2012211202A priority Critical patent/JP5578218B2/en Priority to US14/031,724 priority patent/US9055373B2/en Priority to CN201310449823.8A priority patent/CN103686559B/en Publication of JP2014066819A publication Critical patent/JP2014066819A/en Application granted granted Critical Publication of JP5578218B2 publication Critical patent/JP5578218B2/en Status Active legal-status Critical Current Anticipated expiration legal-status Critical Links Original Assignee TDK Corp Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) ( en Inventor 薫 木嶋 晃 佐藤 Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Active Application number JP2012211202A Other languages Japanese ( ja) ![]()
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