JPS5486320A - Compound system speaker - Google Patents

Compound system speaker

Info

Publication number
JPS5486320A
JPS5486320A JP15356577A JP15356577A JPS5486320A JP S5486320 A JPS5486320 A JP S5486320A JP 15356577 A JP15356577 A JP 15356577A JP 15356577 A JP15356577 A JP 15356577A JP S5486320 A JPS5486320 A JP S5486320A
Authority
JP
Japan
Prior art keywords
speaker
forming
piezoelectric
coil conductor
electrode layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP15356577A
Other languages
Japanese (ja)
Other versions
JPS607880B2 (en
Inventor
Otaro Ando
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Olympus Corp
Original Assignee
Olympus Optical Co Ltd
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 as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP15356577A priority Critical patent/JPS607880B2/en
Priority to US05/970,150 priority patent/US4242541A/en
Publication of JPS5486320A publication Critical patent/JPS5486320A/en
Publication of JPS607880B2 publication Critical patent/JPS607880B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00
    • H04R23/02—Transducers using more than one principle simultaneously

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)

Abstract

PURPOSE:To provide a speaker which has high efficiency and permits sufficiently low tone reproduction by so constituting the speaker that a dynamic type full face driving speaker and a piezoelectric speaker are combined. CONSTITUTION:A diaphragm 7 is constituted by forming a full face electrode layer 9 through vapor deposition, etc. on one side of a high polymer piezoelectric film 8 composed of thin film of polyvinylidene fluoride or other, forming a zigzag form coil conductor layer 10 on the other side, spreading this with a frame 11 and disposing bar magnets 12 and magnetic plates 12 supporting these and simultaneously forming magnetic circuits on both sides. As a result, by connecting the low impedance terminals 17, 18 of a transformer 15 to which signal voltage input to the coil conductor layer 10 and high impedance terminals 19, 20 to the electrode layer 9 via diodes 23, 24, the speaker which permits low tone reproduction with high efficiency may be provided by making use of the advantages of the dynamic type and piezoelectric type.
JP15356577A 1977-12-22 1977-12-22 Composite speaker Expired JPS607880B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP15356577A JPS607880B2 (en) 1977-12-22 1977-12-22 Composite speaker
US05/970,150 US4242541A (en) 1977-12-22 1978-12-18 Composite type acoustic transducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15356577A JPS607880B2 (en) 1977-12-22 1977-12-22 Composite speaker

Publications (2)

Publication Number Publication Date
JPS5486320A true JPS5486320A (en) 1979-07-09
JPS607880B2 JPS607880B2 (en) 1985-02-27

Family

ID=15565266

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15356577A Expired JPS607880B2 (en) 1977-12-22 1977-12-22 Composite speaker

Country Status (1)

Country Link
JP (1) JPS607880B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040029872A (en) * 2002-10-02 2004-04-08 (주) 모토조이 Thin Film Speaker

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040029872A (en) * 2002-10-02 2004-04-08 (주) 모토조이 Thin Film Speaker

Also Published As

Publication number Publication date
JPS607880B2 (en) 1985-02-27

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