FR674339A - Improvements to sound recording devices - Google Patents

Improvements to sound recording devices

Info

Publication number
FR674339A
FR674339A FR674339DA FR674339A FR 674339 A FR674339 A FR 674339A FR 674339D A FR674339D A FR 674339DA FR 674339 A FR674339 A FR 674339A
Authority
FR
France
Prior art keywords
recording devices
sound recording
sound
devices
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)
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.)
Parlophone Records Ltd
Original Assignee
Gramophone Co 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 Gramophone Co Ltd filed Critical Gramophone Co Ltd
Application granted granted Critical
Publication of FR674339A publication Critical patent/FR674339A/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
    • H04R1/16—Mounting or connecting stylus to transducer with or without damping means

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR674339D 1929-05-01 1929-05-01 Improvements to sound recording devices Expired FR674339A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR674339T 1929-05-01

Publications (1)

Publication Number Publication Date
FR674339A true FR674339A (en) 1930-01-27

Family

ID=9018677

Family Applications (1)

Application Number Title Priority Date Filing Date
FR674339D Expired FR674339A (en) 1929-05-01 1929-05-01 Improvements to sound recording devices

Country Status (1)

Country Link
FR (1) FR674339A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2536261A (en) * 1947-12-20 1951-01-02 Rca Corp Microphone sound filter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2536261A (en) * 1947-12-20 1951-01-02 Rca Corp Microphone sound filter

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