JPS57123798A - Motional feedback type speaker - Google Patents

Motional feedback type speaker

Info

Publication number
JPS57123798A
JPS57123798A JP873781A JP873781A JPS57123798A JP S57123798 A JPS57123798 A JP S57123798A JP 873781 A JP873781 A JP 873781A JP 873781 A JP873781 A JP 873781A JP S57123798 A JPS57123798 A JP S57123798A
Authority
JP
Japan
Prior art keywords
speaker
range
vibration
frequency
piezoelectric element
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
JP873781A
Other languages
Japanese (ja)
Inventor
Shintaro Hirose
Yasushi Miyoshi
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.)
Sanyo Electric Co Ltd
Sanyo Denki Co Ltd
Original Assignee
Sanyo Electric Co Ltd
Sanyo Denki 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 Sanyo Electric Co Ltd, Sanyo Denki Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP873781A priority Critical patent/JPS57123798A/en
Publication of JPS57123798A publication Critical patent/JPS57123798A/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 improve acoustic characteristics of a speaker by obtaining a feedback signal used for motional feedback (MFB) from the piezoelectric element of a piezoelectric tweeter incorporated coaxially in a dynamic speaker as a speaker for high frequency range. CONSTITUTION:The voltage that a discoidal piezoelectric element 4 outputs in accordance with the vibration of a voice coil bobbin 1 is at most several-ten- odd% of an input voltage supplied to display the function of a speaker for high frequency range by using the piezoelectric element 4 as a vibration source. Therefore, when the input voltage for the speaker has flat frequency characteristics, the output voltage obtained in accordance with the vibration of the voice coil bobbin 1 is lower than the input voltage, so any detection signal is not picked up. For this purpose, a low-voltage cut filter 10 is inserted between the piezoelectric element 4 as the high-frequency-range speaker and an acoustic signal source 7 for the element 4 to cut a low-frequency-range input signal to the element 4, and only a low-frequency-range output signal obtained by the element 4 in accordance with the vibration of the voice coil bobbin 1 is outputted as the detection signal.
JP873781A 1981-01-22 1981-01-22 Motional feedback type speaker Pending JPS57123798A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP873781A JPS57123798A (en) 1981-01-22 1981-01-22 Motional feedback type speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP873781A JPS57123798A (en) 1981-01-22 1981-01-22 Motional feedback type speaker

Publications (1)

Publication Number Publication Date
JPS57123798A true JPS57123798A (en) 1982-08-02

Family

ID=11701258

Family Applications (1)

Application Number Title Priority Date Filing Date
JP873781A Pending JPS57123798A (en) 1981-01-22 1981-01-22 Motional feedback type speaker

Country Status (1)

Country Link
JP (1) JPS57123798A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6214900U (en) * 1985-07-12 1987-01-29

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6214900U (en) * 1985-07-12 1987-01-29

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