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DK205384A - Elektroakustisk transducerenhed med nedsat resonansfrekvens og mekanisk fjeder med negativ fjederstivhed til brug i en saadan enhed - Google Patents

Elektroakustisk transducerenhed med nedsat resonansfrekvens og mekanisk fjeder med negativ fjederstivhed til brug i en saadan enhed Download PDF

Info

Publication number
DK205384A
DK205384A DK205384A DK205384A DK205384A DK 205384 A DK205384 A DK 205384A DK 205384 A DK205384 A DK 205384A DK 205384 A DK205384 A DK 205384A DK 205384 A DK205384 A DK 205384A
Authority
DK
Denmark
Prior art keywords
spring
stuff
resonance frequency
transducer unit
reduced resonance
Prior art date
Application number
DK205384A
Other languages
English (en)
Other versions
DK205384D0 (da
Inventor
Kees Dijkstra
Bernard Peter Videc
Jan Huizinga
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Publication of DK205384D0 publication Critical patent/DK205384D0/da
Publication of DK205384A publication Critical patent/DK205384A/da

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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • 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
    • H04R1/42—Combinations of transducers with fluid-pressure or other non-electrical amplifying means
    • 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
    • H04R7/26—Damping by means acting directly on free portion of diaphragm or cone

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
DK205384A 1983-04-26 1984-04-24 Elektroakustisk transducerenhed med nedsat resonansfrekvens og mekanisk fjeder med negativ fjederstivhed til brug i en saadan enhed DK205384A (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL8301460A NL8301460A (nl) 1983-04-26 1983-04-26 Elektroakoestische omzettereenheid met verlaagde resonantiefrekwentie.

Publications (2)

Publication Number Publication Date
DK205384D0 DK205384D0 (da) 1984-04-24
DK205384A true DK205384A (da) 1984-10-27

Family

ID=19841759

Family Applications (1)

Application Number Title Priority Date Filing Date
DK205384A DK205384A (da) 1983-04-26 1984-04-24 Elektroakustisk transducerenhed med nedsat resonansfrekvens og mekanisk fjeder med negativ fjederstivhed til brug i en saadan enhed

Country Status (7)

Country Link
US (2) US4607382A (da)
EP (1) EP0123359B1 (da)
JP (1) JPS59207798A (da)
DE (1) DE3477122D1 (da)
DK (1) DK205384A (da)
NL (1) NL8301460A (da)
SG (1) SG67690G (da)

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CN110168249B (zh) * 2017-01-12 2021-04-16 Hrl实验室有限责任公司 可调节负刚度系统
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FR3089381B1 (fr) 2018-12-03 2020-10-30 Devialet Enceinte close à faible raideur
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Also Published As

Publication number Publication date
EP0123359A1 (en) 1984-10-31
SG67690G (en) 1990-09-21
DK205384D0 (da) 1984-04-24
US4607382A (en) 1986-08-19
NL8301460A (nl) 1984-11-16
JPS59207798A (ja) 1984-11-24
DE3477122D1 (en) 1989-04-13
EP0123359B1 (en) 1989-03-08
US4722517A (en) 1988-02-02

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AHB Application shelved due to non-payment