GB372533A - Improvements in or relating to sound reproducing apparatus - Google Patents

Improvements in or relating to sound reproducing apparatus

Info

Publication number
GB372533A
GB372533A GB11700/31A GB1170031A GB372533A GB 372533 A GB372533 A GB 372533A GB 11700/31 A GB11700/31 A GB 11700/31A GB 1170031 A GB1170031 A GB 1170031A GB 372533 A GB372533 A GB 372533A
Authority
GB
United Kingdom
Prior art keywords
cabinet
gramophone
resonators
april
speaker
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
GB11700/31A
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.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi 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 Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Publication of GB372533A publication Critical patent/GB372533A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/08—Constructional details, e.g. cabinet

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

372,533. Gramophone casings. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London.- (Assignees of Wolff, I.; Greenleigh Apts.; Merchantville, New Jersey, U.S.A.) April 20, 1931, No. 11700. Convention date, April 18, 1930. [Class 40 (ii).] Cabinet resonance in a loud-speaker or gramophone is reduced or eliminated by providing the cabinet with one or more resonators, each of which is tuned within the frequency range within which the cabinet is normally resonant and operable when resonating to develop a relatively low-pressure region within the cabinet where a relatively high-pressure region would otherwise be developed by the diaphragm. The figure shows a cabinet 10 containing a radio loud-speaker 12, 13 and formed with resonators 19, 25 which communicate with the interior of the cabinet via the opening 20a in the tubular member 20 and the opening 26 respectively.
GB11700/31A 1930-04-18 1931-04-20 Improvements in or relating to sound reproducing apparatus Expired GB372533A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US445448A US1901388A (en) 1930-04-18 1930-04-18 Method and apparatus for eliminating the effect of cabinet resonance

Publications (1)

Publication Number Publication Date
GB372533A true GB372533A (en) 1932-05-12

Family

ID=23768938

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11700/31A Expired GB372533A (en) 1930-04-18 1931-04-20 Improvements in or relating to sound reproducing apparatus

Country Status (3)

Country Link
US (1) US1901388A (en)
DE (1) DE624049C (en)
GB (1) GB372533A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2469851A1 (en) * 1979-11-12 1981-05-22 Siare Loudspeaker enclosure with straight cavities - which are situated in walls communicating through parallel grooves with interior of enclosure

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE441671A (en) * 1941-09-05
US2766839A (en) * 1953-03-16 1956-10-16 Research Corp Loudspeaker system
US2880817A (en) * 1953-10-28 1959-04-07 Pickard & Burns Inc Loudspeaker system
DE964515C (en) * 1954-10-29 1957-05-23 Elektronik Ges Mit Beschraenkt Portable audio frequency amplifier with built-in microphone, especially hearing aid equipment
DE1141566B (en) * 1959-05-23 1962-12-20 Philips Nv Device for giving an acoustic signal, e.g. B. a call signal
DE1184676B (en) * 1962-10-20 1964-12-31 Rau Swf Autozubehoer Electromagnetic horn
US3317000A (en) * 1966-02-01 1967-05-02 Stephen L Heidrich Electroacoustic transducer
GB1598310A (en) * 1977-11-04 1981-09-16 Andrews A J Bass sound projection system
FR2612721B1 (en) * 1987-03-16 1989-06-16 Hautreux Francois ACOUSTIC SPEAKER ACCORDING TO THE SPEAKER FREQUENCY
JP3763682B2 (en) * 1998-10-14 2006-04-05 パイオニア株式会社 Speaker device
CN108110659A (en) * 2018-01-23 2018-06-01 江西力天机械有限公司 A kind of easy access and the harmonic elimination compensating cabinet of heat dissipation
US20220337927A1 (en) * 2021-04-19 2022-10-20 Plantronics, Inc. Metamaterial To Scale Down Loudspeaker Enclosure Size And Enhance Performance

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2469851A1 (en) * 1979-11-12 1981-05-22 Siare Loudspeaker enclosure with straight cavities - which are situated in walls communicating through parallel grooves with interior of enclosure

Also Published As

Publication number Publication date
DE624049C (en) 1936-01-10
US1901388A (en) 1933-03-14

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