FR2077430A1 - - Google Patents

Info

Publication number
FR2077430A1
FR2077430A1 FR7102661A FR7102661A FR2077430A1 FR 2077430 A1 FR2077430 A1 FR 2077430A1 FR 7102661 A FR7102661 A FR 7102661A FR 7102661 A FR7102661 A FR 7102661A FR 2077430 A1 FR2077430 A1 FR 2077430A1
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.)
Granted
Application number
FR7102661A
Other languages
French (fr)
Other versions
FR2077430B1 (cs
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of FR2077430A1 publication Critical patent/FR2077430A1/fr
Application granted granted Critical
Publication of FR2077430B1 publication Critical patent/FR2077430B1/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
    • 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
    • H04R1/345—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 for loudspeakers
    • H04R1/347—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 for loudspeakers for obtaining a phase-shift between the front and back acoustic wave

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)
  • Details Of Audible-Bandwidth Transducers (AREA)
FR7102661A 1970-01-31 1971-01-27 Expired FR2077430B1 (cs)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7001421A NL7001421A (cs) 1970-01-31 1970-01-31

Publications (2)

Publication Number Publication Date
FR2077430A1 true FR2077430A1 (cs) 1971-10-22
FR2077430B1 FR2077430B1 (cs) 1974-04-26

Family

ID=19809220

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7102661A Expired FR2077430B1 (cs) 1970-01-31 1971-01-27

Country Status (4)

Country Link
US (1) US3739096A (cs)
AT (1) AT308863B (cs)
FR (1) FR2077430B1 (cs)
NL (1) NL7001421A (cs)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2329129A1 (fr) * 1975-10-22 1977-05-20 Elektroakusztikai Gyar Transducteur electroacoustique directionnel, notamment emetteur acoustique cardioide

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3921016A (en) * 1973-12-12 1975-11-18 Proctor & Assoc Co Sonic signal generator and housing
US4421957A (en) * 1981-06-15 1983-12-20 Bell Telephone Laboratories, Incorporated End-fire microphone and loudspeaker structures
FR2668015B1 (fr) * 1990-10-16 1993-07-30 Piccfaluga Pierre Procede pour ameliorer la qualite de la restitution d'une ambiance sonore, et appareil de mise en óoeuvre comportant au moins un haut-parleur emettant dans trois directions.
JP3127066B2 (ja) * 1992-10-30 2001-01-22 インターナショナル・ビジネス・マシーンズ・コーポレ−ション パーソナル・マルチメディア・スピーカ・システム
US5742690A (en) * 1994-05-18 1998-04-21 International Business Machine Corp. Personal multimedia speaker system
US5552569A (en) * 1995-03-08 1996-09-03 Sapkowski; Mechislao Exponential multi-ported acoustic enclosure
US5809150A (en) * 1995-06-28 1998-09-15 Eberbach; Steven J. Surround sound loudspeaker system
EP2409499A4 (en) * 2009-03-20 2016-06-01 Meyer Sound Lab Inc SPEAKER WITH PASSIVE DIRECTIONAL CONTROL AT LOW FREQUENCIES
US8666107B2 (en) * 2012-04-11 2014-03-04 Cheng Uei Precision Industry Co., Ltd. Loudspeaker
US9307309B2 (en) * 2014-01-13 2016-04-05 Rockwell Automation Technologies, Inc. Stack light with in-line sound module
US10123111B2 (en) 2016-06-03 2018-11-06 Fulcrum Acoustic, LLC Passive cardioid speaker
US10422821B2 (en) 2017-04-17 2019-09-24 Rockwell Automation Technologies, Inc. System and method of identifying a module in a stack light
US11102570B2 (en) 2019-06-11 2021-08-24 Bose Corporation Auto-configurable bass loudspeaker
US11153680B2 (en) 2020-02-13 2021-10-19 Bose Corporation Stackable loudspeakers

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB388348A (en) * 1932-10-26 1933-02-23 Gen Electric Co Ltd Improvements in loudspeakers
DE968490C (de) * 1949-06-05 1958-02-27 Siemens Ag Aus mehreren in einer Reihe in eine gemeinsame lattenartige Schallwand eingebauten Lautsprechern bestehende Lautsprechergruppenanordnung

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB388348A (en) * 1932-10-26 1933-02-23 Gen Electric Co Ltd Improvements in loudspeakers
DE968490C (de) * 1949-06-05 1958-02-27 Siemens Ag Aus mehreren in einer Reihe in eine gemeinsame lattenartige Schallwand eingebauten Lautsprechern bestehende Lautsprechergruppenanordnung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2329129A1 (fr) * 1975-10-22 1977-05-20 Elektroakusztikai Gyar Transducteur electroacoustique directionnel, notamment emetteur acoustique cardioide

Also Published As

Publication number Publication date
FR2077430B1 (cs) 1974-04-26
AT308863B (de) 1973-07-25
NL7001421A (cs) 1971-08-03
US3739096A (en) 1973-06-12
DE2100884A1 (cs) 1971-08-12
DE2100884B2 (de) 1976-07-22

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Legal Events

Date Code Title Description
ST Notification of lapse