JPS5592097A - Plate type mfb speaker - Google Patents

Plate type mfb speaker

Info

Publication number
JPS5592097A
JPS5592097A JP16245778A JP16245778A JPS5592097A JP S5592097 A JPS5592097 A JP S5592097A JP 16245778 A JP16245778 A JP 16245778A JP 16245778 A JP16245778 A JP 16245778A JP S5592097 A JPS5592097 A JP S5592097A
Authority
JP
Japan
Prior art keywords
diaphragm
speaker
characteristic
conductive material
generated
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.)
Pending
Application number
JP16245778A
Other languages
Japanese (ja)
Inventor
Akio Koizumi
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.)
Sony Corp
Original Assignee
Sony 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 as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Priority to JP16245778A priority Critical patent/JPS5592097A/en
Publication of JPS5592097A publication Critical patent/JPS5592097A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers
    • H04R3/002—Damping circuit arrangements for transducers, e.g. motional feedback circuits

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

PURPOSE:To make it possible to improve considerably the characteristic of a speaker by controlling vibration of a diaphragm on a basis of capacity change of a capacitor formed between the conductive layer and the conductive material on the back face of the diaphragm. CONSTITUTION:Skin layer 6c and conductive material 13 on the back face of diaphragm 6 are so formed that they may be opposite to each other in parallel throughout the surface of diaphragm 6. Consequently, even if split vibration is generated in any position of diaphragm 6 when diaphragm 6 is vibrating, the capacity of the capacitor formed between the skin layer 6c and conductive material 13 is always changed. By detection of this capacity change, split vibration generated in any position of diaphragm 6 can be detected accurately, and motion feedback control can be performed accurately. Thus, distortion can be prevented from being generated in the characteristic of the speaker to improve considerably the characteristic of the speaker.
JP16245778A 1978-12-29 1978-12-29 Plate type mfb speaker Pending JPS5592097A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16245778A JPS5592097A (en) 1978-12-29 1978-12-29 Plate type mfb speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16245778A JPS5592097A (en) 1978-12-29 1978-12-29 Plate type mfb speaker

Publications (1)

Publication Number Publication Date
JPS5592097A true JPS5592097A (en) 1980-07-12

Family

ID=15754969

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16245778A Pending JPS5592097A (en) 1978-12-29 1978-12-29 Plate type mfb speaker

Country Status (1)

Country Link
JP (1) JPS5592097A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012094547A1 (en) * 2011-01-06 2012-07-12 Bose Corporation Transducer with integrated sensor
US8705754B2 (en) 2011-03-30 2014-04-22 Bose Corporation Measuring transducer displacement
JP2019508933A (en) * 2017-01-04 2019-03-28 アップル インコーポレイテッドＡｐｐｌｅ Ｉｎｃ． Capacitive sensing of moving coil structures using insertion plates.
AT520509A1 (en) * 2017-06-12 2019-04-15 Sound Solutions Int Co Ltd Transducer and method for determining a diaphragm displacement

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5158943A (en) * 1974-11-20 1976-05-22 Matsushita Electric Industrial Co Ltd Seidengatasupiika

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5158943A (en) * 1974-11-20 1976-05-22 Matsushita Electric Industrial Co Ltd Seidengatasupiika

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012094547A1 (en) * 2011-01-06 2012-07-12 Bose Corporation Transducer with integrated sensor
US9049523B2 (en) 2011-01-06 2015-06-02 Bose Corporation Transducer with integrated sensor
US9241227B2 (en) 2011-01-06 2016-01-19 Bose Corporation Transducer with integrated sensor
US8705754B2 (en) 2011-03-30 2014-04-22 Bose Corporation Measuring transducer displacement
JP2019508933A (en) * 2017-01-04 2019-03-28 アップル インコーポレイテッドＡｐｐｌｅ Ｉｎｃ． Capacitive sensing of moving coil structures using insertion plates.
AT520509A1 (en) * 2017-06-12 2019-04-15 Sound Solutions Int Co Ltd Transducer and method for determining a diaphragm displacement

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