JPS57138299A - Electrodynamic speaker - Google Patents

Electrodynamic speaker

Info

Publication number
JPS57138299A
JPS57138299A JP2411481A JP2411481A JPS57138299A JP S57138299 A JPS57138299 A JP S57138299A JP 2411481 A JP2411481 A JP 2411481A JP 2411481 A JP2411481 A JP 2411481A JP S57138299 A JPS57138299 A JP S57138299A
Authority
JP
Japan
Prior art keywords
driving
mode
node
frequency
nodal
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
JP2411481A
Other languages
Japanese (ja)
Other versions
JPS6221479B2 (en
Inventor
Shuji Saeki
Kazuhide Sato
Seiichi Ishikawa
Hideaki Inoue
Katsumasa Sato
Tsuneo Tanaka
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP2411481A priority Critical patent/JPS57138299A/en
Priority to US06/281,167 priority patent/US4426556A/en
Priority to GB8120922A priority patent/GB2082021B/en
Priority to DE19813126993 priority patent/DE3126993A1/en
Publication of JPS57138299A publication Critical patent/JPS57138299A/en
Publication of JPS6221479B2 publication Critical patent/JPS6221479B2/ja
Granted 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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

PURPOSE:To flatten the frequency of an electrodynamic speaker up to a high range, by achieving two-point driving by fixing voice coils to one nodal point of oscillation mode and another nodal point. CONSTITUTION:A voice coil 3 is fixed at one node b4 of oscillation mode B with resonance frequency f3, and a voice coil 3' is fixed at another node b3 to drive a diaphragm 1 at two points. With regard to two-node driving of mode B, nodes b3 and b4 are considered to be driven equivalently by driving forces F1 and F2, and the driving points by the F1 and F2 are nearly symmetric on one node a2 driving mode A. Therefore, this driving provides the same effect with the nodal driving of the node a2 of mode A by a voice coil bobbin 12 having a diameter x1+x2. Thus, the coils 3 and 3' perform nodal driving of mode B at a frequency f3, and consequently the attenuation of the frequency f3 is performed completely. Therefore, sound pressure frequency characteristics are flattened.
JP2411481A 1980-07-08 1981-02-19 Electrodynamic speaker Granted JPS57138299A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2411481A JPS57138299A (en) 1981-02-19 1981-02-19 Electrodynamic speaker
US06/281,167 US4426556A (en) 1980-07-08 1981-07-07 Electrodynamic loudspeaker
GB8120922A GB2082021B (en) 1980-07-08 1981-07-07 Electrodynamic loudspeaker
DE19813126993 DE3126993A1 (en) 1980-07-08 1981-07-08 ELECTRODYNAMIC SPEAKER

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2411481A JPS57138299A (en) 1981-02-19 1981-02-19 Electrodynamic speaker

Publications (2)

Publication Number Publication Date
JPS57138299A true JPS57138299A (en) 1982-08-26
JPS6221479B2 JPS6221479B2 (en) 1987-05-13

Family

ID=12129292

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2411481A Granted JPS57138299A (en) 1980-07-08 1981-02-19 Electrodynamic speaker

Country Status (1)

Country Link
JP (1) JPS57138299A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018506909A (en) * 2015-01-23 2018-03-08 テクトニック オーディオ ラボズ、インコーポレイテッド Audio transducer stabilization system and method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6610506B2 (en) * 2016-11-07 2019-11-27 ヤマハ株式会社 Sound equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018506909A (en) * 2015-01-23 2018-03-08 テクトニック オーディオ ラボズ、インコーポレイテッド Audio transducer stabilization system and method

Also Published As

Publication number Publication date
JPS6221479B2 (en) 1987-05-13

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