JPS56112198A - Electroacoustic transducer - Google Patents

Electroacoustic transducer

Info

Publication number
JPS56112198A
JPS56112198A JP1479180A JP1479180A JPS56112198A JP S56112198 A JPS56112198 A JP S56112198A JP 1479180 A JP1479180 A JP 1479180A JP 1479180 A JP1479180 A JP 1479180A JP S56112198 A JPS56112198 A JP S56112198A
Authority
JP
Japan
Prior art keywords
diaphragm
penetrating holes
low frequency
frequency characteristics
sound
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
JP1479180A
Other languages
Japanese (ja)
Inventor
Masakata Ugaji
Toru Fukumoto
Mitsuo Iwasaki
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 JP1479180A priority Critical patent/JPS56112198A/en
Publication of JPS56112198A publication Critical patent/JPS56112198A/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; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

Abstract

PURPOSE:To improve frequency characteristics at low frequency in an electroacoustic transducer by drilling penetrating holes into its diaphragm and diaphragm holding ring. CONSTITUTION:Penetrating holes 13, 13... are drilled into holding ring 6 holding diaphragm 7 and penetrating holes are also drilled into diaphragm 7 itself correspondingly to penetrating holes 13, 13.... By these penetrating holes, the openings formed by the outside of case 5, the back of diaphragm 7 and the front of back pole 10 inbetween is made passeable each other. The sound from a sound source is transmitted to the inside of the opening, the sound from the front of diaphragm 6 and the one from the back are interferred each other with reverse phases and the frequency characteristics at low frequency is attenuated. Frequency characteristics at low frequency is changed according to the increase/decrease of the number of penetrating holes or the size of a penetrating hole. Thus, the frequency characteristics at low frequency can be easily changed and improved.
JP1479180A 1980-02-12 1980-02-12 Electroacoustic transducer Pending JPS56112198A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1479180A JPS56112198A (en) 1980-02-12 1980-02-12 Electroacoustic transducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1479180A JPS56112198A (en) 1980-02-12 1980-02-12 Electroacoustic transducer

Publications (1)

Publication Number Publication Date
JPS56112198A true JPS56112198A (en) 1981-09-04

Family

ID=11870869

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1479180A Pending JPS56112198A (en) 1980-02-12 1980-02-12 Electroacoustic transducer

Country Status (1)

Country Link
JP (1) JPS56112198A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4847824A (en) * 1971-10-19 1973-07-06

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4847824A (en) * 1971-10-19 1973-07-06

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