FR2241939B1 - - Google Patents

Info

Publication number
FR2241939B1
FR2241939B1 FR7428990A FR7428990A FR2241939B1 FR 2241939 B1 FR2241939 B1 FR 2241939B1 FR 7428990 A FR7428990 A FR 7428990A FR 7428990 A FR7428990 A FR 7428990A FR 2241939 B1 FR2241939 B1 FR 2241939B1
Authority
FR
France
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
FR7428990A
Other versions
FR2241939A1 (fr
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of FR2241939A1 publication Critical patent/FR2241939A1/fr
Application granted granted Critical
Publication of FR2241939B1 publication Critical patent/FR2241939B1/fr
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
    • H04R5/00—Stereophonic arrangements
    • H04R5/02—Spatial or constructional arrangements of loudspeakers
    • 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
    • H04R1/323—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only for loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2205/00—Details of stereophonic arrangements covered by H04R5/00 but not provided for in any of its subgroups
    • H04R2205/022—Plurality of transducers corresponding to a plurality of sound channels in each earpiece of headphones or in a single enclosure

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
FR7428990A 1973-08-24 1974-08-23 Expired FR2241939B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7311562A SE387512B (sv) 1973-08-24 1973-08-24 Hogtalare for sterofonisk ljudatergivningsanleggning, samt av tva sadana hogtalare bestaende hogtalarpar

Publications (2)

Publication Number Publication Date
FR2241939A1 FR2241939A1 (fr) 1975-03-21
FR2241939B1 true FR2241939B1 (fr) 1980-04-04

Family

ID=20318328

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7428990A Expired FR2241939B1 (fr) 1973-08-24 1974-08-23

Country Status (10)

Country Link
US (1) US4006311A (fr)
JP (1) JPS5734717B2 (fr)
CA (1) CA1011656A (fr)
DE (1) DE2439934B2 (fr)
DK (1) DK138570B (fr)
FR (1) FR2241939B1 (fr)
GB (1) GB1484633A (fr)
IT (1) IT1020161B (fr)
NL (1) NL165024C (fr)
SE (1) SE387512B (fr)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2801227C3 (de) * 1978-01-12 1982-06-24 Hans Deutsch Akustikforschung und Lautsprecherentwicklung GmbH, 5020 Salzburg Lautsprecherbox mit Hornresonator
US4284166A (en) * 1979-04-13 1981-08-18 Gale George A Port devices for bass-reflex speaker enclosures
US4410063A (en) * 1981-03-04 1983-10-18 Onkyo Kabushiki Kaisha Loudspeaker system
JPS5829291A (ja) * 1981-08-13 1983-02-21 Victor Co Of Japan Ltd スピ−カシステム
JPS5844889A (ja) * 1981-09-11 1983-03-15 Victor Co Of Japan Ltd スピ−カシステム
SE447438B (sv) * 1981-11-26 1986-11-10 Stig Carlsson Hogtalare
SE447780B (sv) * 1981-11-26 1986-12-08 Stig Carlsson Hogtalare med en ljudabsorbent
DE3382223D1 (de) * 1983-09-06 1991-04-25 Henry Oliver Wolcott Lautsprecherstruktur.
US4882760A (en) * 1983-12-02 1989-11-21 Yee Raymond M Sound reproduction system
AU3745585A (en) * 1983-12-02 1985-06-13 R.M. Yee Sound reproduction system
US4713836A (en) * 1984-07-06 1987-12-15 Nec Corporation Telephone set structure having a member capable of being inserted in invertible position
US4723289A (en) * 1986-03-17 1988-02-02 Bose Corporation Stereo electroacoustic transducing
US4761921A (en) * 1987-01-16 1988-08-09 Nelson Philip H Sound-masking system for core modules used in an office
US4787348A (en) * 1988-01-25 1988-11-29 Parker Automotive Corporation Carbon-cleaning apparatus for diesel engines
US4928788A (en) * 1989-06-12 1990-05-29 Erickson Jon B Ported automotive speaker enclosure apparatus and method
DE4036152A1 (de) * 1990-11-14 1992-05-21 Dieter Lang Lautsprecheranordnung
US5307082A (en) * 1992-10-28 1994-04-26 North Carolina State University Electrostatically shaped membranes
US5930370A (en) * 1995-09-07 1999-07-27 Rep Investment Limited Liability In-home theater surround sound speaker system
US5708719A (en) * 1995-09-07 1998-01-13 Rep Investment Limited Liability Company In-home theater surround sound speaker system
US6118876A (en) * 1995-09-07 2000-09-12 Rep Investment Limited Liability Company Surround sound speaker system for improved spatial effects
US6665412B1 (en) 1997-01-10 2003-12-16 Sony Corporation Speaker device
JP3992974B2 (ja) * 2001-01-22 2007-10-17 義人 丸尾 スピーカー装置
US20040184628A1 (en) * 2003-03-20 2004-09-23 Niro1.Com Inc. Speaker apparatus
US6940990B2 (en) * 2003-07-14 2005-09-06 Wan-Fang Huang Multi-channel audio center speaker device
JP4878989B2 (ja) * 2006-11-14 2012-02-15 ティーオーエー株式会社 スピーカシステム
US8081775B2 (en) * 2007-03-09 2011-12-20 Robert Bosch Gmbh Loudspeaker apparatus for radiating acoustic waves in a hemisphere around the centre axis
EP2189009A1 (fr) 2007-08-14 2010-05-26 Koninklijke Philips Electronics N.V. Système de reproduction audio comprenant des haut-parleurs à directivité étroite et large
US8175304B1 (en) * 2008-02-12 2012-05-08 North Donald J Compact loudspeaker system
EP2180721A1 (fr) * 2008-10-21 2010-04-28 Lautsprecher Teufel GmbH Haut-parleur à membrane plate
US9264813B2 (en) 2010-03-04 2016-02-16 Logitech, Europe S.A. Virtual surround for loudspeakers with increased constant directivity
US8542854B2 (en) 2010-03-04 2013-09-24 Logitech Europe, S.A. Virtual surround for loudspeakers with increased constant directivity
US20130336504A1 (en) * 2010-06-07 2013-12-19 Libratone A/S Compact stand-alone stereo loudspeaker
EP2971393A4 (fr) 2013-03-15 2016-11-16 Richard O'polka Système sonore portable
US10149058B2 (en) 2013-03-15 2018-12-04 Richard O'Polka Portable sound system
USD740784S1 (en) 2014-03-14 2015-10-13 Richard O'Polka Portable sound device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3104729A (en) * 1963-09-24 Stereophonic sound reproducing loudspeaker system
NL97567C (fr) * 1953-10-02
CH325519A (de) * 1954-12-01 1957-11-15 Zoellig Karl Für Schallwiedergabe eingerichtetes Gerät mit mindestens zwei Lautsprechern verschiedener Beschallungsrichtung
GB891014A (en) * 1959-08-19 1962-03-07 Decca Record Co Ltd Improvements in or relating to sterepohonic sound reproducing apparatus
NL298920A (fr) * 1962-10-12
US3627948A (en) * 1969-08-18 1971-12-14 Electro Voice Stereo loudspeaker system

Also Published As

Publication number Publication date
JPS5073623A (fr) 1975-06-17
JPS5734717B2 (fr) 1982-07-24
GB1484633A (en) 1977-09-01
SE7311562L (fr) 1975-02-25
FR2241939A1 (fr) 1975-03-21
DK450874A (fr) 1975-04-21
CA1011656A (en) 1977-06-07
NL7411351A (nl) 1975-02-26
AU7265174A (en) 1976-02-26
NL165024C (nl) 1981-02-16
SE387512B (sv) 1976-09-06
DK138570C (fr) 1979-02-26
NL165024B (nl) 1980-09-15
DK138570B (da) 1978-09-25
DE2439934B2 (de) 1977-10-27
DE2439934A1 (de) 1975-03-27
IT1020161B (it) 1977-12-20
DE2439934C3 (fr) 1978-06-15
US4006311A (en) 1977-02-01

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Legal Events

Date Code Title Description
ST Notification of lapse