FR681288A - Electromagnetic device for recording and reproducing acoustic oscillations - Google Patents

Electromagnetic device for recording and reproducing acoustic oscillations

Info

Publication number
FR681288A
FR681288A FR681288DA FR681288A FR 681288 A FR681288 A FR 681288A FR 681288D A FR681288D A FR 681288DA FR 681288 A FR681288 A FR 681288A
Authority
FR
France
Prior art keywords
recording
electromagnetic device
acoustic oscillations
reproducing acoustic
reproducing
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.)
TELEGRAPHIE PATENT SYNDIKAT
Original Assignee
TELEGRAPHIE PATENT SYNDIKAT
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 TELEGRAPHIE PATENT SYNDIKAT filed Critical TELEGRAPHIE PATENT SYNDIKAT
Application granted granted Critical
Publication of FR681288A publication Critical patent/FR681288A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/004—Recording on, or reproducing or erasing from, magnetic drums
FR681288D 1928-09-26 1929-09-04 Electromagnetic device for recording and reproducing acoustic oscillations Expired FR681288A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE141087X 1928-09-26

Publications (1)

Publication Number Publication Date
FR681288A true FR681288A (en) 1930-05-13

Family

ID=5668510

Family Applications (1)

Application Number Title Priority Date Filing Date
FR681288D Expired FR681288A (en) 1928-09-26 1929-09-04 Electromagnetic device for recording and reproducing acoustic oscillations

Country Status (5)

Country Link
US (1) US1846531A (en)
AT (1) AT125469B (en)
CH (1) CH141087A (en)
DK (1) DK44348C (en)
FR (1) FR681288A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2672346A (en) * 1946-12-21 1954-03-16 Int Electronics Co Office dictation and intercommunication system
US2610257A (en) * 1949-12-22 1952-09-09 Warner Bros Magnetic record volume control
US2816174A (en) * 1952-04-26 1957-12-10 Rca Corp Magnetic compression system

Also Published As

Publication number Publication date
US1846531A (en) 1932-02-23
AT125469B (en) 1931-11-25
DK44348C (en) 1931-07-13
CH141087A (en) 1930-07-15

Similar Documents

Publication Publication Date Title
FR681288A (en) Electromagnetic device for recording and reproducing acoustic oscillations
BE356013A (en) Devices for recording and reproducing sounds
FR764896A (en) Electromagnetic device for recording and reproducing sounds
FR782725A (en) Device for recording and reproducing acoustic vibrations
FR35930E (en) Device for recording and reproducing sounds
FR712588A (en) Device for receiving and reproducing acoustic oscillations
FR681733A (en) Device for recording and reproducing sound
FR711148A (en) Method and device for photographic sound recording
FR32452E (en) Device for recording and reproducing sounds
FR731201A (en) Device for recording sound on phonographic discs
FR734027A (en) Device for recording and reproducing sounds
FR716439A (en) Sound recording device
FR828186A (en) Sound recording and reproducing device
FR647926A (en) Sound reproduction and recording apparatus
FR647687A (en) Film for recording and reproducing sound and images
FR668243A (en) Device for the phonetic reproduction of indications from recording and other devices
FR734026A (en) Device for electromagnetic recording of sound vibrations
FR659270A (en) Methods and devices for recording and reproducing sound
FR697298A (en) Recording and reproducing diaphragm device
FR38818E (en) Sound film and device for its reproduction
FR697190A (en) Sound reproducing device of phonograms
FR676054A (en) Improved method and apparatus for recording and reproducing sound
FR693435A (en) Electromagnetic vibrating device intended in particular for acoustic recording and reproduction
FR671350A (en) Electro-magnetic sound reproducing device for phonographs
FR727123A (en) Device for photographic recording of acoustic vibrations