BE344484A - - Google Patents

Info

Publication number
BE344484A
BE344484A BE344484DA BE344484A BE 344484 A BE344484 A BE 344484A BE 344484D A BE344484D A BE 344484DA BE 344484 A BE344484 A BE 344484A
Authority
BE
Belgium
Application number
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.)
Family has litigation
Publication of BE344484A publication Critical patent/BE344484A/xx
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=22427925&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=BE344484(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

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
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/30—Combinations of transducers with horns, e.g. with mechanical matching means, i.e. front-loaded horns
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H04R7/127—Non-planar diaphragms or cones dome-shaped
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H04R7/14—Non-planar diaphragms or cones corrugated, pleated or ribbed

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
BE344484D 1926-08-04 BE344484A (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US127023A US1707545A (en) 1926-08-04 1926-08-04 Acoustic device

Publications (1)

Publication Number Publication Date
BE344484A true BE344484A (ja)

Family

ID=22427925

Family Applications (1)

Application Number Title Priority Date Filing Date
BE344484D BE344484A (ja) 1926-08-04

Country Status (6)

Country Link
US (1) US1707545A (ja)
BE (1) BE344484A (ja)
DE (1) DE540540C (ja)
FR (1) FR636818A (ja)
GB (1) GB275571A (ja)
NL (1) NL22539C (ja)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE968466C (de) * 1952-02-23 1958-02-20 Siemens Ag Druckkammerlautsprecher, insbesondere mit Kalottenmembran
US4157741A (en) * 1978-08-16 1979-06-12 Goldwater Alan J Phase plug
US4310065A (en) * 1979-05-11 1982-01-12 Chromalloy Electronics Corporation Radial horn
US4718517A (en) * 1986-02-27 1988-01-12 Electro-Voice, Inc. Loudspeaker and acoustic transformer therefor
US4882562A (en) * 1986-03-11 1989-11-21 Turbosound Limited Adaptor for coupling plural compression drivers to a common horn
GB0202284D0 (en) 2002-01-31 2002-03-20 Martin Audio Ltd Directional loudspeaker
US20060034475A1 (en) * 2004-08-16 2006-02-16 Geddes Earl R Compression driver plug
EP3288284A1 (en) 2008-08-14 2018-02-28 Harman International Industries, Incorporated Phase plug and acoustic lens for direct radiating loudspeaker
FR2955445B1 (fr) 2010-01-15 2013-06-07 Phl Audio Transducteur electrodynamique a dome et suspension interne
FR2955446B1 (fr) 2010-01-15 2015-06-05 Phl Audio Transducteur electrodynamique a dome et suspension flottante
FR2955444B1 (fr) 2010-01-15 2012-08-03 Phl Audio Systeme de haut-parleur coaxial a chambre de compression

Also Published As

Publication number Publication date
FR636818A (fr) 1928-04-17
NL22539C (ja)
GB275571A (en) 1928-07-12
US1707545A (en) 1929-04-02
DE540540C (de) 1932-01-09

Similar Documents

Publication Publication Date Title
FR604778A (ja)
FR599263A (ja)
GB282719A (ja)
BE332825A (ja)
BE332738A (ja)
BE332552A (ja)
NL23100C (ja)
NL20687C (ja)
NL22539C (ja)
BE270782A (ja)
BE368615A (ja)
BE346874A (ja)
BE345602A (ja)
BE344905A (ja)
BE269774A (ja)
BE340159A (ja)
BE337215A (ja)
BE333438A (ja)
BE333319A (ja)
BE333235A (ja)
BE341622A (ja)
BE333218A (ja)
BE333187A (ja)
BE333183A (ja)
BE333173A (ja)