GB998884A - Improvements in or relating to loudspeaker systems - Google Patents

Improvements in or relating to loudspeaker systems

Info

Publication number
GB998884A
GB998884A GB23973/62A GB2397362A GB998884A GB 998884 A GB998884 A GB 998884A GB 23973/62 A GB23973/62 A GB 23973/62A GB 2397362 A GB2397362 A GB 2397362A GB 998884 A GB998884 A GB 998884A
Authority
GB
United Kingdom
Prior art keywords
loud
speakers
row
inches
length
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
GB23973/62A
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.)
Bosch Security Systems Inc
Original Assignee
Electro Voice Inc
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 Electro Voice Inc filed Critical Electro Voice Inc
Publication of GB998884A publication Critical patent/GB998884A/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
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/403—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers loud-speakers

Abstract

998,884. Loud-speakers. ELECTRO-VOICE Inc. June 21, 1962 [June 21, 1961; March 29; 1962], No. 23973/62. Heading H4J. A loud-speaker system, particularly for public address use, comprises a row of cone loudspeakers mounted side-by-side to form a line source, the length of the row being greater than four wavelengths of the highest frequency to be reproduced, and with means for limiting the radiation from the ends of the row. In Fig. 2 a row of 12 loud-speakers 32 forming a concave radiating surface are mounted within a sealed enclosure 10 which acts as a baffle. A layer 50 of absorbent material deadens the sound waves within the enclosure. All the loud-speakers are driven in phase and each set of 4 adjacent loud-speakers may be connected in series. The cone diameter of each loud-speaker may be 4 inches, and the length of the row about 48 inches. In a somewhat similar arrangement, Figs. 6-8 (not shown), the loud-speakers have cones of oval shape, at at each end of the row are tweeter loudspeakers connected in parallel. Openings opposite the tweeters are designed to extend the low-frequency response. In Figs. 12, 13 the loud-speakers are arranged in a straight line within an enclosure 220 which acts as a baffle. The six loud-speakers on the left are excited through a low-pass filter 246, 248 having a cut-off frequency of 500 cycles, the three loud-speakers on the right are excited through a low-pass filter 250, 252 cutting off at 2000 cycles, while the remaining loud-speakers receive the whole frequency range. As in Fig. 2, the length of the row may be about 48 inches.
GB23973/62A 1961-06-21 1962-06-21 Improvements in or relating to loudspeaker systems Expired GB998884A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11867361A 1961-06-21 1961-06-21
US190515A US3138667A (en) 1961-06-21 1962-03-29 Loudspeaker system

Publications (1)

Publication Number Publication Date
GB998884A true GB998884A (en) 1965-07-21

Family

ID=26816620

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23973/62A Expired GB998884A (en) 1961-06-21 1962-06-21 Improvements in or relating to loudspeaker systems

Country Status (3)

Country Link
US (2) US3138667A (en)
DE (1) DE1276730B (en)
GB (1) GB998884A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2168299A1 (en) * 1972-01-19 1973-08-31 Saba Gmbh
WO1989003919A1 (en) * 1987-10-26 1989-05-05 Naeslund Jan A device for a meeting-hall
AU628028B2 (en) * 1987-10-26 1992-09-10 Jan Naslund Sound-ceiling for halls
GB2299481A (en) * 1995-03-28 1996-10-02 Sse Hire Limited Loudspeaker system
NL1023702C2 (en) * 2003-06-19 2004-12-21 Bosch Security Systems B V Loudspeaker column for use in large spaces, e.g. stadiums, has specific acoustic length for making sound audible over wider area

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3273662A (en) * 1966-09-20 Stereo sound system
US3265153A (en) * 1962-06-27 1966-08-09 Electro Voice Acoustical device with protective screen
US3236328A (en) * 1962-06-27 1966-02-22 Electro Voice Acoustical device with protective screen
US3308237A (en) * 1963-05-31 1967-03-07 Muter Company Columnar loudspeaker system
US3207257A (en) * 1964-10-14 1965-09-21 Basil L Wilson Adjustable column speaker enclosure
US3403235A (en) * 1965-03-17 1968-09-24 Newmarkets Inc Wide-range loudspeaker
HU163253B (en) * 1971-08-16 1973-07-28
US3836724A (en) * 1971-12-27 1974-09-17 Chuo Denshi Kogyo Co Ltd Four channel headphone
US3980827A (en) * 1974-12-19 1976-09-14 Sepmeyer Ludwig W Diversity system for noise-masking
US4130174A (en) * 1977-05-25 1978-12-19 Audioanalyst, Inc. Loudspeaker
US4207963A (en) * 1978-12-11 1980-06-17 Integrated Sound Systems Inc. Loudspeaker system
US4267405A (en) * 1979-06-05 1981-05-12 Mcintosh Laboratory, Inc. Stereo speaker system for creating stereo images
US4569076A (en) * 1983-05-09 1986-02-04 Lucasfilm Ltd. Motion picture theater loudspeaker system
US4845759A (en) * 1986-04-25 1989-07-04 Intersonics Incorporated Sound source having a plurality of drivers operating from a virtual point
US4953218A (en) * 1987-07-16 1990-08-28 Hughes Jr Robert K Foreground music system using current amplification
US5802190A (en) * 1994-11-04 1998-09-01 The Walt Disney Company Linear speaker array
US5642429A (en) * 1995-04-28 1997-06-24 Janssen; Craig N. Sound reproduction system having enhanced low frequency directional control characteristics
US6834113B1 (en) 2000-03-03 2004-12-21 Erik Liljehag Loudspeaker system
US7260235B1 (en) 2000-10-16 2007-08-21 Bose Corporation Line electroacoustical transducing
US7206427B2 (en) * 2003-04-22 2007-04-17 Hpv Technologies Llc Flat panel surface array
US7319767B2 (en) * 2003-06-30 2008-01-15 Bose Corporation Line array electroacoustical transducing
NL1026038C2 (en) * 2004-04-26 2005-10-27 Alcons Audio Bv Loudspeaker and assembly of loudspeakers.
US7936891B2 (en) * 2005-10-06 2011-05-03 Henricksen Clifford A Line array electroacoustical transducing
US8042783B2 (en) * 2006-12-12 2011-10-25 Santoro Peter C Supporting an electronic device
US8971547B2 (en) 2009-01-08 2015-03-03 Harman International Industries, Incorporated Passive group delay beam forming
US8189822B2 (en) * 2009-06-18 2012-05-29 Robert Bosch Gmbh Modular, line-array loudspeaker
US8917881B2 (en) * 2010-01-26 2014-12-23 Cheng Yih Jenq Enclosure-less loudspeaker system
US8249268B2 (en) * 2010-01-26 2012-08-21 Cheng Yih Jenq Woofer-less and enclosure-less loudspeaker system
US9191746B2 (en) 2012-08-24 2015-11-17 Cheng Yih Jenq Loudspeaker driver with dual electromagnet assemblies
US9955260B2 (en) 2016-05-25 2018-04-24 Harman International Industries, Incorporated Asymmetrical passive group delay beamforming
US11671749B2 (en) 2019-03-29 2023-06-06 Endow Audio, LLC Audio loudspeaker array and related methods
US11095975B2 (en) 2019-08-16 2021-08-17 Bose Corporation Line array loudspeaker

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE575492C (en) * 1927-11-06 1933-04-28 Lohusta Elektro Akustik G M B speaker
US2114680A (en) * 1934-12-24 1938-04-19 Rca Corp System for the reproduction of sound
US2143175A (en) * 1937-10-23 1939-01-10 Samuel A Waite Sound reproducing system
US2602860A (en) * 1947-11-18 1952-07-08 Doubt Leon Stewart Loud-speaker structure
US2632055A (en) * 1949-04-18 1953-03-17 John E Parker Loud speaker system
DE968492C (en) * 1949-06-05 1958-02-27 Siemens Ag Loudspeaker group arrangement consisting of several loudspeakers built in a row in a common slat-like baffle
DE939512C (en) * 1950-04-18 1956-02-23 Telefunken Gmbh Arrangement for the central broadband sound supply of an airspace
DE849421C (en) * 1950-12-02 1952-09-15 Siemens Ag Acoustic term element
DE848366C (en) * 1950-12-28 1952-09-04 Siemens Ag Loudspeaker for bass reproduction
DE941674C (en) * 1950-12-28 1956-03-22 Siemens ß. Halske Aktiengesellschaft, Berlin und München Loudspeaker combination in which an acoustic filter, preferably a low-pass filter, is provided on the front side and / or on the rear side of the membrane to limit the emitted frequency range
DE955960C (en) * 1953-11-22 1957-01-10 Fritz Patloka Sound playback device with preferably several speakers
GB781637A (en) * 1954-10-22 1957-08-21 Telefunken Gmbh Improvements in or relating to apparatus for the reproduction of sound
US2927963A (en) * 1955-01-04 1960-03-08 Jordan Robert Oakes Single channel binaural or stereo-phonic sound system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2168299A1 (en) * 1972-01-19 1973-08-31 Saba Gmbh
WO1989003919A1 (en) * 1987-10-26 1989-05-05 Naeslund Jan A device for a meeting-hall
AU628028B2 (en) * 1987-10-26 1992-09-10 Jan Naslund Sound-ceiling for halls
GB2299481A (en) * 1995-03-28 1996-10-02 Sse Hire Limited Loudspeaker system
US5781645A (en) * 1995-03-28 1998-07-14 Sse Hire Limited Loudspeaker system
GB2299481B (en) * 1995-03-28 1999-09-08 Sse Hire Limited Loudspeaker system
NL1023702C2 (en) * 2003-06-19 2004-12-21 Bosch Security Systems B V Loudspeaker column for use in large spaces, e.g. stadiums, has specific acoustic length for making sound audible over wider area

Also Published As

Publication number Publication date
US3125181A (en) 1964-03-17
US3138667A (en) 1964-06-23
DE1276730B (en) 1968-09-05

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