FR641562A - Perfectionnements aux moyens pour enregistrer ou reproduire le son - Google Patents

Perfectionnements aux moyens pour enregistrer ou reproduire le son

Info

Publication number
FR641562A
FR641562A FR641562DA FR641562A FR 641562 A FR641562 A FR 641562A FR 641562D A FR641562D A FR 641562DA FR 641562 A FR641562 A FR 641562A
Authority
FR
France
Prior art keywords
recording
reproducing sound
reproducing
sound
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)
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.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi 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 Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Application granted granted Critical
Publication of FR641562A publication Critical patent/FR641562A/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
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H04R17/04—Gramophone pick-ups using a stylus; Recorders using a stylus

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
FR641562D 1926-10-02 1927-09-08 Perfectionnements aux moyens pour enregistrer ou reproduire le son Expired FR641562A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB24425/26A GB282906A (en) 1926-10-02 1926-10-02 Improvements in or relating to means for recording or reproducing sound

Publications (1)

Publication Number Publication Date
FR641562A true FR641562A (fr) 1928-08-07

Family

ID=10211533

Family Applications (1)

Application Number Title Priority Date Filing Date
FR641562D Expired FR641562A (fr) 1926-10-02 1927-09-08 Perfectionnements aux moyens pour enregistrer ou reproduire le son

Country Status (4)

Country Link
US (1) US1737253A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
BE (1) BE345853A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR641562A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB282906A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2564136A (en) * 1943-03-04 1951-08-14 Hartford Nat Bank & Trust Co Corundum crystal recording or reproducing member
US2577149A (en) * 1947-07-18 1951-12-04 Union Carbide & Carbon Corp Corundum phonograph needle and sound reproducing apparatus embodying same
US2564054A (en) * 1947-10-10 1951-08-14 Magnavox Co Phonograph pickup and mechanical motion converting system therefor
US3409904A (en) * 1966-12-20 1968-11-05 Motorola Inc Printer having piezoelectric crystal printing means
DE1574489B2 (de) * 1968-02-13 1971-07-01 lelefunken Patentverwertungsgesell schaft mbH, 7900 Ulm, Teldec Telefunken Decca Schallplatten GmbH, 2000 Hamburg Speicher und wiedergabeanordnung sowie abtaster fuer diese wiedergabeanordnung
CH554578A (de) * 1971-06-12 1974-09-30 Benz Ernst Tonabnehmer-nadel.
US3805100A (en) * 1972-01-22 1974-04-16 Ted Bildplatten Piezoelectric record cutting stylus
JPS6196423A (ja) * 1984-10-17 1986-05-15 Fuji Photo Film Co Ltd 振動測定用ヘッド

Also Published As

Publication number Publication date
BE345853A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
US1737253A (en) 1929-11-26
GB282906A (en) 1928-01-02

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