GB659063A - Improvements in or relating to loudspeakers - Google Patents

Improvements in or relating to loudspeakers

Info

Publication number
GB659063A
GB659063A GB24849/47A GB2484947A GB659063A GB 659063 A GB659063 A GB 659063A GB 24849/47 A GB24849/47 A GB 24849/47A GB 2484947 A GB2484947 A GB 2484947A GB 659063 A GB659063 A GB 659063A
Authority
GB
United Kingdom
Prior art keywords
width
loud
loudspeakers
relating
diffusion
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
GB24849/47A
Other languages
English (en)
Inventor
Roger Chapman
Robert Henry Trier
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.)
Kolster Brandes Ltd
Original Assignee
Kolster Brandes 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 Kolster Brandes Ltd filed Critical Kolster Brandes Ltd
Publication of GB659063A publication Critical patent/GB659063A/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
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/36—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means by using a single aperture of dimensions not greater than the shortest operating wavelength

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
GB24849/47A 1947-09-10 1947-09-10 Improvements in or relating to loudspeakers Expired GB659063A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB283814X 1947-09-10

Publications (1)

Publication Number Publication Date
GB659063A true GB659063A (en) 1951-10-17

Family

ID=10274751

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24849/47A Expired GB659063A (en) 1947-09-10 1947-09-10 Improvements in or relating to loudspeakers

Country Status (7)

Country Link
US (1) US2646851A (fr)
BE (2) BE484735A (fr)
CH (1) CH283814A (fr)
DE (1) DE944860C (fr)
FR (1) FR971128A (fr)
GB (1) GB659063A (fr)
NL (1) NL77682C (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2140653A (en) * 1983-04-20 1984-11-28 Tadashi Sawafuji A piezoelectric sound producer

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2694462A (en) * 1951-09-19 1954-11-16 Robbins Frank Acoustic system for loud-speakers
US2694463A (en) * 1952-04-07 1954-11-16 Robbins Frank Acoustic system for loud-speakers
US2787332A (en) * 1952-09-06 1957-04-02 Norman C Fulmer Loud-speaker system
DE1130472B (de) * 1957-11-22 1962-05-30 Philco Corp Lautsprechermembran
US3146848A (en) * 1958-08-25 1964-09-01 John O Fundingsland Hi-fidelity speaker
GB1557879A (en) * 1976-12-03 1979-12-12 Rank Organisation Ltd Electro acoustic transducers
US4207963A (en) * 1978-12-11 1980-06-17 Integrated Sound Systems Inc. Loudspeaker system
CA1271247A (fr) * 1987-01-14 1990-07-03 Gerard S. Mindel Cellule de charge et de dispersion pour le son
FR2649572B1 (fr) * 1989-07-07 1991-09-20 Thomson Consumer Electronics Dispositif de reproduction sonore pour televiseurs
GB2425436B (en) * 2005-04-21 2007-06-06 Martin Audio Ltd Acoustic loading device for loudspeakers
US7520368B2 (en) * 2007-06-08 2009-04-21 Moore Dana A Horizontally folded reflex-ported bass horn enclosure
US7513332B2 (en) * 2007-09-12 2009-04-07 Moore Dana A Convertible folded horn enclosure with improved compactness

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US272866A (en) * 1883-02-27 Speaking-trumpet for receiving-telephones
US1616474A (en) * 1925-03-05 1927-02-08 Charles F Stehlin Tone-developing loud speaker
US1865735A (en) * 1929-04-01 1932-07-05 Rca Corp Sound reproducer
GB404937A (en) * 1932-07-14 1934-01-15 William Robertson Millar Improvements in sound-modifying devices for loud speakers or the like
FR791142A (fr) * 1934-09-06 1935-12-04 Dispositif protecteur et amplificateur de son pour hauts-parleurs de t. s. f.
US2214393A (en) * 1938-09-10 1940-09-10 Ingraham E Co Acoustical equalizer
US2373692A (en) * 1942-10-03 1945-04-17 Ray L Smith Loud-speaker

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2140653A (en) * 1983-04-20 1984-11-28 Tadashi Sawafuji A piezoelectric sound producer

Also Published As

Publication number Publication date
US2646851A (en) 1953-07-28
BE522721A (fr)
FR971128A (fr) 1951-01-12
NL77682C (fr)
DE944860C (de) 1956-06-28
BE484735A (fr)
CH283814A (fr) 1952-06-30

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