FR1052541A - Sound recording device - Google Patents

Sound recording device

Info

Publication number
FR1052541A
FR1052541A FR1052541DA FR1052541A FR 1052541 A FR1052541 A FR 1052541A FR 1052541D A FR1052541D A FR 1052541DA FR 1052541 A FR1052541 A FR 1052541A
Authority
FR
France
Prior art keywords
recording device
sound recording
sound
recording
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
Joseph Leon
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 FR1052541A publication Critical patent/FR1052541A/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
    • H04R1/342—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 microphones

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR1052541D 1952-03-18 1952-03-18 Sound recording device Expired FR1052541A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1052541T 1952-03-18

Publications (1)

Publication Number Publication Date
FR1052541A true FR1052541A (en) 1954-01-25

Family

ID=9595365

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1052541D Expired FR1052541A (en) 1952-03-18 1952-03-18 Sound recording device

Country Status (1)

Country Link
FR (1) FR1052541A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4314098A (en) * 1977-06-10 1982-02-02 Thomson-Csf Reversible electroacoustic transducer device having a constant directivity characteristic over a wide frequency band

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4314098A (en) * 1977-06-10 1982-02-02 Thomson-Csf Reversible electroacoustic transducer device having a constant directivity characteristic over a wide frequency band

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