FR829844A - Loud speaker - Google Patents

Loud speaker

Info

Publication number
FR829844A
FR829844A FR829844DA FR829844A FR 829844 A FR829844 A FR 829844A FR 829844D A FR829844D A FR 829844DA FR 829844 A FR829844 A FR 829844A
Authority
FR
France
Prior art keywords
loud speaker
loud
speaker
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
Other languages
French (fr)
Inventor
Herbert Jyrch
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 filed Critical
Application granted granted Critical
Publication of FR829844A publication Critical patent/FR829844A/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
    • H04R1/34—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

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
FR829844D 1936-11-25 1937-11-24 Loud speaker Expired FR829844A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE487576X 1936-11-25

Publications (1)

Publication Number Publication Date
FR829844A true FR829844A (en) 1938-07-07

Family

ID=6543652

Family Applications (1)

Application Number Title Priority Date Filing Date
FR829844D Expired FR829844A (en) 1936-11-25 1937-11-24 Loud speaker

Country Status (4)

Country Link
US (1) US2174128A (en)
BE (1) BE424804A (en)
FR (1) FR829844A (en)
GB (1) GB487576A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3268030A (en) * 1965-04-13 1966-08-23 Finn H Magnus Acoustic system
US8351630B2 (en) * 2008-05-02 2013-01-08 Bose Corporation Passive directional acoustical radiating

Also Published As

Publication number Publication date
US2174128A (en) 1939-09-26
BE424804A (en)
GB487576A (en) 1938-06-22

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