FR909225A - Perfectionnements aux haut-parleurs - Google Patents

Perfectionnements aux haut-parleurs

Info

Publication number
FR909225A
FR909225A FR909225DA FR909225A FR 909225 A FR909225 A FR 909225A FR 909225D A FR909225D A FR 909225DA FR 909225 A FR909225 A FR 909225A
Authority
FR
France
Prior art keywords
enhancements
loudspeaker
loudspeaker enhancements
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
English (en)
Inventor
Albert-Philippe Simart
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.)
APPLIC TELEPHONIQUES SOC D
Original Assignee
APPLIC TELEPHONIQUES SOC D
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 APPLIC TELEPHONIQUES SOC D filed Critical APPLIC TELEPHONIQUES SOC D
Application granted granted Critical
Publication of FR909225A publication Critical patent/FR909225A/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

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR909225D 1945-02-13 1945-02-13 Perfectionnements aux haut-parleurs Expired FR909225A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR909225T 1945-02-13

Publications (1)

Publication Number Publication Date
FR909225A true FR909225A (fr) 1946-05-02

Family

ID=9407779

Family Applications (1)

Application Number Title Priority Date Filing Date
FR909225D Expired FR909225A (fr) 1945-02-13 1945-02-13 Perfectionnements aux haut-parleurs

Country Status (1)

Country Link
FR (1) FR909225A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4200170A (en) * 1977-08-29 1980-04-29 Williams John H Jr Pyramid speaker assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4200170A (en) * 1977-08-29 1980-04-29 Williams John H Jr Pyramid speaker assembly

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