GB8802815D0 - Loudspeaker having open-filter frame of continuous vv shape in cross-section & wave modulation plate of same - Google Patents

Loudspeaker having open-filter frame of continuous vv shape in cross-section & wave modulation plate of same

Info

Publication number
GB8802815D0
GB8802815D0 GB888802815A GB8802815A GB8802815D0 GB 8802815 D0 GB8802815 D0 GB 8802815D0 GB 888802815 A GB888802815 A GB 888802815A GB 8802815 A GB8802815 A GB 8802815A GB 8802815 D0 GB8802815 D0 GB 8802815D0
Authority
GB
United Kingdom
Prior art keywords
loudspeaker
continuous
open
cross
section
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
GB888802815A
Other versions
GB2215164B (en
GB2215164A (en
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.)
Fei P T H
Original Assignee
Fei P T H
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 Fei P T H filed Critical Fei P T H
Publication of GB8802815D0 publication Critical patent/GB8802815D0/en
Publication of GB2215164A publication Critical patent/GB2215164A/en
Application granted granted Critical
Publication of GB2215164B publication Critical patent/GB2215164B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/38—Transmitter circuitry for the transmission of television signals according to analogue transmission standards
    • H04N5/40—Modulation circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/455—Demodulation-circuits
    • 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
    • H04R7/12—Non-planar diaphragms or cones
    • 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
    • H04R7/12—Non-planar diaphragms or cones
    • H04R7/14—Non-planar diaphragms or cones corrugated, pleated or ribbed
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Television Systems (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Amplitude Modulation (AREA)
GB8802815A 1988-03-08 1988-02-08 Loudspeaker having open-filter frame of continuous vv shape in cross-section and wave modulation plate of same design Expired - Fee Related GB2215164B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19883807472 DE3807472C1 (en) 1988-03-08 1988-03-08

Publications (3)

Publication Number Publication Date
GB8802815D0 true GB8802815D0 (en) 1988-03-09
GB2215164A GB2215164A (en) 1989-09-13
GB2215164B GB2215164B (en) 1992-03-18

Family

ID=6349094

Family Applications (2)

Application Number Title Priority Date Filing Date
GB3807472A Expired GB1456501A (en) 1988-03-08 1972-08-15 Television apparatus
GB8802815A Expired - Fee Related GB2215164B (en) 1988-03-08 1988-02-08 Loudspeaker having open-filter frame of continuous vv shape in cross-section and wave modulation plate of same design

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB3807472A Expired GB1456501A (en) 1988-03-08 1972-08-15 Television apparatus

Country Status (4)

Country Link
DE (1) DE3807472C1 (en)
FR (1) FR2628281B1 (en)
GB (2) GB1456501A (en)
SE (1) SE466982B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4519001A (en) * 1981-10-27 1985-05-21 Ampex Corporation Apparatus for providing dropout compensation and error concealment in a PAL format video information signal

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB501152A (en) * 1937-09-20 1939-02-22 Gen Electric Co Ltd Improvements in loud speakers
NL282835A (en) * 1963-01-22
US3909530A (en) * 1974-01-07 1975-09-30 Federal Sign And Signal Corp Loudspeaker with shallow re-entrant grille-like horn
US3995125A (en) * 1975-06-30 1976-11-30 Wheelock Signals, Inc. Protective grille
US3989909A (en) * 1975-09-15 1976-11-02 General Electric Company Grill for audio loudspeakers and the like
FR2363255A1 (en) * 1976-08-27 1978-03-24 Bose Corp LOUDSPEAKER AND METHOD OF MANUFACTURING
US4439644A (en) * 1981-11-24 1984-03-27 Edmund M. Jaskiewicz Loud speaker enclosure
DE8628254U1 (en) * 1986-10-23 1987-11-26 Linke, Heinrich, 2000 Hamburg Insert for loudspeaker boxes to achieve a low-vibration housing

Also Published As

Publication number Publication date
DE3807472C1 (en) 1989-06-08
GB1456501A (en) 1976-11-24
FR2628281B1 (en) 1990-07-27
SE8800430L (en) 1989-08-11
SE8800430D0 (en) 1988-02-10
GB2215164B (en) 1992-03-18
SE466982B (en) 1992-05-04
GB2215164A (en) 1989-09-13
FR2628281A1 (en) 1989-09-08

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19940208