JPS5494020A - Complex speaker - Google Patents

Complex speaker

Info

Publication number
JPS5494020A
JPS5494020A JP2478A JP2478A JPS5494020A JP S5494020 A JPS5494020 A JP S5494020A JP 2478 A JP2478 A JP 2478A JP 2478 A JP2478 A JP 2478A JP S5494020 A JPS5494020 A JP S5494020A
Authority
JP
Japan
Prior art keywords
speaker
conductor
piezoelectric
diaphragm
composing
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
JP2478A
Other languages
Japanese (ja)
Other versions
JPS6026359B2 (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 JP2478A priority Critical patent/JPS6026359B2/en
Priority to US05/970,150 priority patent/US4242541A/en
Publication of JPS5494020A publication Critical patent/JPS5494020A/en
Publication of JPS6026359B2 publication Critical patent/JPS6026359B2/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 produce a speaker having high efficiency and high amplitude operations by composing a dynamic speaker and a piezoelectric speaker in a manner to obtain multiplied operations. CONSTITUTION:A diaphragm 11 is made of a piezoelectric film 12 of such a bimorph construction as has piezoelectric films 12a and 12b of polyvinilidene fluoride of opposite polarizing directions adhered to each other. An audio current is fed to the coil conductor 13 of the film 12, and a voltage according to the audio signals is impressed between the conductor 13 and a whole surface electrode 14. A magnetic field is applied to the conductor 14 in the direction generally perpendicular to the conductor 13 by the magnets 15, which are mounted in a magnetic plate 17 and which have their same poles facing each other through the diaphragm 11, so that the force and direction resulting from the interactions between the current flowing through the conductor 13 and the magnetic field become coincident to effect the multiplied actions. By composing the dynamic type whole surface drive speaker and a piezoelectric speaker, the diaphragm 11 can have high amplitude vibrations to provide a highly efficient speaker.
JP2478A 1977-12-22 1978-01-05 Composite speaker Expired JPS6026359B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2478A JPS6026359B2 (en) 1978-01-05 1978-01-05 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
JP2478A JPS6026359B2 (en) 1978-01-05 1978-01-05 Composite speaker

Publications (2)

Publication Number Publication Date
JPS5494020A true JPS5494020A (en) 1979-07-25
JPS6026359B2 JPS6026359B2 (en) 1985-06-22

Family

ID=11462815

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2478A Expired JPS6026359B2 (en) 1977-12-22 1978-01-05 Composite speaker

Country Status (1)

Country Link
JP (1) JPS6026359B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63176099A (en) * 1987-01-16 1988-07-20 Foster Denki Kk Compound speaker
WO2011077683A1 (en) * 2009-12-24 2011-06-30 日本電気株式会社 Electroacoustic transducer, electronic device, method for converting electronic sound, and method for outputting acoustic wave from electronic device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63176099A (en) * 1987-01-16 1988-07-20 Foster Denki Kk Compound speaker
WO2011077683A1 (en) * 2009-12-24 2011-06-30 日本電気株式会社 Electroacoustic transducer, electronic device, method for converting electronic sound, and method for outputting acoustic wave from electronic device
CN102687532A (en) * 2009-12-24 2012-09-19 日本电气株式会社 Electroacoustic transducer, electronic device, method for converting electronic sound, and method for outputting acoustic wave from electronic device
US8913767B2 (en) 2009-12-24 2014-12-16 Lenovo Innovations Limited (Hong Kong) Electro-acoustic transducer, electronic apparatus, electro-acoustic conversion method, and sound wave output method of electronic apparatus
JP5734874B2 (en) * 2009-12-24 2015-06-17 レノボ・イノベーションズ・リミテッド（香港） Electroacoustic transducer, electronic device, electroacoustic conversion method, and sound wave output method of electronic device

Also Published As

Publication number Publication date
JPS6026359B2 (en) 1985-06-22

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