FR861975A - Improvements to the installation of loudspeakers in receiving devices - Google Patents

Improvements to the installation of loudspeakers in receiving devices

Info

Publication number
FR861975A
FR861975A FR861975DA FR861975A FR 861975 A FR861975 A FR 861975A FR 861975D A FR861975D A FR 861975DA FR 861975 A FR861975 A FR 861975A
Authority
FR
France
Prior art keywords
loudspeakers
installation
receiving devices
devices
receiving
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.)
Thales SA
Original Assignee
CSF Compagnie Generale de Telegraphie sans Fil SA
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 CSF Compagnie Generale de Telegraphie sans Fil SA filed Critical CSF Compagnie Generale de Telegraphie sans Fil SA
Application granted granted Critical
Publication of FR861975A publication Critical patent/FR861975A/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)
FR861975D 1938-12-08 1939-11-30 Improvements to the installation of loudspeakers in receiving devices Expired FR861975A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE861975X 1938-12-08

Publications (1)

Publication Number Publication Date
FR861975A true FR861975A (en) 1941-02-22

Family

ID=6796760

Family Applications (1)

Application Number Title Priority Date Filing Date
FR861975D Expired FR861975A (en) 1938-12-08 1939-11-30 Improvements to the installation of loudspeakers in receiving devices

Country Status (1)

Country Link
FR (1) FR861975A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2628924A1 (en) * 1988-03-15 1989-09-22 Baranes Roger High fidelity loudspeaker universal acoustic enclosure - enables several loudspeakers of different dimensions to be mounted at three different angles WRT each other

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2628924A1 (en) * 1988-03-15 1989-09-22 Baranes Roger High fidelity loudspeaker universal acoustic enclosure - enables several loudspeakers of different dimensions to be mounted at three different angles WRT each other

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