FR594985A - Improvements in loudspeakers - Google Patents

Improvements in loudspeakers

Info

Publication number
FR594985A
FR594985A FR594985DA FR594985A FR 594985 A FR594985 A FR 594985A FR 594985D A FR594985D A FR 594985DA FR 594985 A FR594985 A FR 594985A
Authority
FR
France
Prior art keywords
loudspeakers
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)
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.)
BRANDES Ltd
Original Assignee
BRANDES Ltd
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 BRANDES Ltd filed Critical BRANDES Ltd
Application granted granted Critical
Publication of FR594985A publication Critical patent/FR594985A/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
    • H04R1/22—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

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)
FR594985D 1924-03-13 1925-03-12 Improvements in loudspeakers Expired FR594985A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US433282XA 1924-03-13 1924-03-13

Publications (1)

Publication Number Publication Date
FR594985A true FR594985A (en) 1925-09-24

Family

ID=21926602

Family Applications (1)

Application Number Title Priority Date Filing Date
FR594985D Expired FR594985A (en) 1924-03-13 1925-03-12 Improvements in loudspeakers

Country Status (2)

Country Link
DE (1) DE433282C (en)
FR (1) FR594985A (en)

Also Published As

Publication number Publication date
DE433282C (en) 1926-08-26

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