PL121306B1 - Directional electroacoustical transducer - Google Patents

Directional electroacoustical transducer Download PDF

Info

Publication number
PL121306B1
PL121306B1 PL1976192234A PL19223476A PL121306B1 PL 121306 B1 PL121306 B1 PL 121306B1 PL 1976192234 A PL1976192234 A PL 1976192234A PL 19223476 A PL19223476 A PL 19223476A PL 121306 B1 PL121306 B1 PL 121306B1
Authority
PL
Poland
Prior art keywords
acoustic
phase
acoustic path
membrane
diaphragm
Prior art date
Application number
PL1976192234A
Other languages
English (en)
Polish (pl)
Original Assignee
Elektroakusztikai Gyarhu
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 Elektroakusztikai Gyarhu filed Critical Elektroakusztikai Gyarhu
Publication of PL121306B1 publication Critical patent/PL121306B1/pl

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)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Circuit For Audible Band Transducer (AREA)
PL1976192234A 1975-10-22 1976-09-07 Directional electroacoustical transducer PL121306B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HU75EE00002382A HU171882B (hu) 1975-10-22 1975-10-22 Napravlennyj ehlektroakusticheskij preobrazovatel', glavnym obrazom kardioidnyj zvukovoj izluchatel'

Publications (1)

Publication Number Publication Date
PL121306B1 true PL121306B1 (en) 1982-04-30

Family

ID=10995654

Family Applications (1)

Application Number Title Priority Date Filing Date
PL1976192234A PL121306B1 (en) 1975-10-22 1976-09-07 Directional electroacoustical transducer

Country Status (10)

Country Link
US (1) US4054748A (OSRAM)
AT (1) AT355645B (OSRAM)
CS (1) CS193079B2 (OSRAM)
DD (1) DD125503A5 (OSRAM)
DE (1) DE2636446A1 (OSRAM)
FR (1) FR2329129A1 (OSRAM)
GB (1) GB1528066A (OSRAM)
HU (1) HU171882B (OSRAM)
PL (1) PL121306B1 (OSRAM)
SU (1) SU736894A3 (OSRAM)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4189627A (en) * 1978-11-27 1980-02-19 Bell Telephone Laboratories, Incorporated Electroacoustic transducer filter assembly
US4482026A (en) * 1982-12-02 1984-11-13 Stehlin Jr George D Loudspeaker enclosure
GB2133247B (en) * 1982-12-24 1987-10-28 Plessey Co Plc Transducers
JPS6163193A (ja) * 1984-09-04 1986-04-01 Nippon Chemicon Corp 電気音響変換器
GB8503389D0 (en) * 1985-02-09 1985-03-13 B & W Loudspeakers Loudspeaker enclosures
DE3542872A1 (de) * 1985-12-04 1986-08-07 Dietmar 3000 Hannover Schäfer Lautsprechergehaeuse mit gebogenen akustischen roehren
JPH0450718Y2 (OSRAM) * 1986-02-28 1992-11-30
ATA74486A (de) * 1986-03-20 1987-04-15 Akg Akustische Kino Geraete Richtmikrophon nach dem elektrostatischen oder elektrodynamischen wandlerprinzip
US5081600A (en) * 1987-11-04 1992-01-14 Accurate, Inc. Loss-in-weight feeder system
GB2206262A (en) * 1987-08-07 1988-12-29 Samsung Electronics Co Ltd Loud speaker
JP2784830B2 (ja) * 1989-09-04 1998-08-06 ソニー株式会社 ヘッドフォン
US5253933A (en) * 1992-02-05 1993-10-19 Walker Daniel R Speaker stand
AT400911B (de) * 1993-03-04 1996-04-25 Koninkl Philips Electronics Nv Elektroakustischer wandler mit einer trennwand und einer maskenwand
US5917923A (en) * 1995-05-18 1999-06-29 Bose Corporation Satellitic compact electroacoustical transducing
GB2365250C (en) * 2000-07-21 2005-04-04 B & W Loudspeakers Acoustic structures
US6862360B2 (en) * 2001-04-19 2005-03-01 Jen-Hui Tsai Speaker system
CN102422653B (zh) * 2009-03-20 2014-09-17 麦耶声音实验室股份有限公司 带有被动低频方向性控制的扬声器
CN102843624B (zh) * 2012-07-05 2016-08-24 李世煌 带有加载孔的音箱结构
US9813802B2 (en) 2012-10-18 2017-11-07 Nokia Technologies Oy Resonance damping for audio transducer systems
NL2013741B1 (en) * 2014-11-04 2016-10-06 Dutch & Dutch B V Directional loudspeaker.
US10123111B2 (en) * 2016-06-03 2018-11-06 Fulcrum Acoustic, LLC Passive cardioid speaker
US10284945B2 (en) * 2016-11-30 2019-05-07 Eugene Julius Christensen Air motion transformer passive radiator for loudspeaker
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
GB202112473D0 (en) 2021-09-01 2021-10-13 Pss Belgium Nv Loudspeaker

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH272869A (de) * 1949-03-30 1951-01-15 Siemens Ag Einrichtung zur Schallwiedergabe.
FR1154792A (fr) * 1955-07-16 1958-04-16 Magneti Marelli Spa Ensemble acoustique à rayonnement unilatéral
NL7001421A (OSRAM) * 1970-01-31 1971-08-03
US3722616A (en) * 1970-12-14 1973-03-27 Ltv Altec Inc Directional loudspeaker system

Also Published As

Publication number Publication date
ATA602076A (de) 1979-08-15
CS193079B2 (en) 1979-09-17
FR2329129A1 (fr) 1977-05-20
AT355645B (de) 1980-03-10
US4054748A (en) 1977-10-18
DE2636446A1 (de) 1977-04-28
GB1528066A (en) 1978-10-11
DD125503A5 (OSRAM) 1977-04-20
HU171882B (hu) 1978-04-28
SU736894A3 (ru) 1980-05-25

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