GB501152A - Improvements in loud speakers - Google Patents

Improvements in loud speakers

Info

Publication number
GB501152A
GB501152A GB2548537A GB2548537A GB501152A GB 501152 A GB501152 A GB 501152A GB 2548537 A GB2548537 A GB 2548537A GB 2548537 A GB2548537 A GB 2548537A GB 501152 A GB501152 A GB 501152A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
loud
vibrations
speaker
fabric
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.)
Expired
Application number
GB2548537A
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB2548537A priority Critical patent/GB501152A/en
Priority to FR843628D priority patent/FR843628A/en
Publication of GB501152A publication Critical patent/GB501152A/en
Expired 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)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

501,152. Loud-speakers. GENERAL ELECTRIC CO., Ltd., and BRITTAIN, F. H. Sept. 20, 1937, No. 25485. [Class 40 (iv)] In a loud-speaker having a diaphragm mounted in a frame, the vibrations of the diaphragm within the range between 60 and 200 cycles per sec. are damped by placing on the frame and behind the diaphragm a fabric of such a nature and at such a position that the vibrations of the diaphragm drive air to and from the fabric and that the low frequencies are reduced whilst the response of the loud-speaker at higher frequencies is substantially unaffected. As shown, a bowlshaped housing 1 carrying the diaphragm is formed with perforations 3 covered by a sheet of velvet or plush. British Specifications 253,486, 302,274, [both in Class 40 (iv)], 373,268, 434,563, and U.S.A. Specifications 1,844,605 and 1,991,738 are referred to.
GB2548537A 1937-09-20 1937-09-20 Improvements in loud speakers Expired GB501152A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2548537A GB501152A (en) 1937-09-20 1937-09-20 Improvements in loud speakers
FR843628D FR843628A (en) 1937-09-20 1938-09-19 Loudspeaker enhancements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2548537A GB501152A (en) 1937-09-20 1937-09-20 Improvements in loud speakers

Publications (1)

Publication Number Publication Date
GB501152A true GB501152A (en) 1939-02-22

Family

ID=10228461

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2548537A Expired GB501152A (en) 1937-09-20 1937-09-20 Improvements in loud speakers

Country Status (2)

Country Link
FR (1) FR843628A (en)
GB (1) GB501152A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1199326B (en) * 1956-09-21 1965-08-26 Deutsche Post Inst Loudspeaker whose membrane movement is mechanically dampened
FR2628281A1 (en) * 1988-03-08 1989-09-08 Jimmy Fang SPEAKER AND ACOUSTIC WAVE MODULATION PLATE WITH ACCORDION CONFIGURATION

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE945768C (en) * 1949-06-05 1956-07-19 Siemens Ag Loudspeaker group arrangement consisting of several loudspeakers built in a row in a common baffle-like baffle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1199326B (en) * 1956-09-21 1965-08-26 Deutsche Post Inst Loudspeaker whose membrane movement is mechanically dampened
FR2628281A1 (en) * 1988-03-08 1989-09-08 Jimmy Fang SPEAKER AND ACOUSTIC WAVE MODULATION PLATE WITH ACCORDION CONFIGURATION

Also Published As

Publication number Publication date
FR843628A (en) 1939-07-06

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