FR971128A - Loudspeaker enhancements - Google Patents

Loudspeaker enhancements

Info

Publication number
FR971128A
FR971128A FR971128DA FR971128A FR 971128 A FR971128 A FR 971128A FR 971128D A FR971128D A FR 971128DA FR 971128 A FR971128 A FR 971128A
Authority
FR
France
Prior art keywords
enhancements
loudspeaker
loudspeaker enhancements
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
Other languages
French (fr)
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of FR971128A publication Critical patent/FR971128A/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)
FR971128D 1947-09-10 1948-09-07 Loudspeaker enhancements Expired FR971128A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
FR971128A true FR971128A (en) 1951-01-12

Family

ID=10274751

Family Applications (1)

Application Number Title Priority Date Filing Date
FR971128D Expired FR971128A (en) 1947-09-10 1948-09-07 Loudspeaker enhancements

Country Status (7)

Country Link
US (1) US2646851A (en)
BE (2) BE522721A (en)
CH (1) CH283814A (en)
DE (1) DE944860C (en)
FR (1) FR971128A (en)
GB (1) GB659063A (en)
NL (1) NL77682C (en)

Cited By (5)

* 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
DE2753790A1 (en) * 1976-12-03 1978-06-08 Rank Organisation Ltd ELECTROACOUSTIC CONVERTER
FR2544950A1 (en) * 1983-04-20 1984-10-26 Sawafuji Tadashi PIEZOELECTRIC DEVICE FOR PRODUCING SOUNDS
FR2649572A1 (en) * 1989-07-07 1991-01-11 Thomson Consumer Electronics Sound reproduction device for televisions

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2787332A (en) * 1952-09-06 1957-04-02 Norman C Fulmer Loud-speaker system
DE1130472B (en) * 1957-11-22 1962-05-30 Philco Corp Speaker cone
US3146848A (en) * 1958-08-25 1964-09-01 John O Fundingsland Hi-fidelity speaker
US4207963A (en) * 1978-12-11 1980-06-17 Integrated Sound Systems Inc. Loudspeaker system
CA1271247A (en) * 1987-01-14 1990-07-03 Gerard S. Mindel Load and dispersion cell for sound
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 (en) * 1934-09-06 1935-12-04 Protective device and sound amplifier for loudspeakers of 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 (6)

* 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
DE2753790A1 (en) * 1976-12-03 1978-06-08 Rank Organisation Ltd ELECTROACOUSTIC CONVERTER
FR2373205A1 (en) * 1976-12-03 1978-06-30 Rank Organisation Ltd ELECTRO-ACOUSTIC TRANSDUCER
FR2544950A1 (en) * 1983-04-20 1984-10-26 Sawafuji Tadashi PIEZOELECTRIC DEVICE FOR PRODUCING SOUNDS
FR2649572A1 (en) * 1989-07-07 1991-01-11 Thomson Consumer Electronics Sound reproduction device for televisions

Also Published As

Publication number Publication date
CH283814A (en) 1952-06-30
BE522721A (en)
DE944860C (en) 1956-06-28
GB659063A (en) 1951-10-17
US2646851A (en) 1953-07-28
NL77682C (en)
BE484735A (en)

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