FR822142A - Improvement in sound recording - Google Patents

Improvement in sound recording

Info

Publication number
FR822142A
FR822142A FR822142DA FR822142A FR 822142 A FR822142 A FR 822142A FR 822142D A FR822142D A FR 822142DA FR 822142 A FR822142 A FR 822142A
Authority
FR
France
Prior art keywords
improvement
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)
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.)
RCA Corp
Original Assignee
RCA Corp
Radio Corporation of America
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 RCA Corp, Radio Corporation of America filed Critical RCA Corp
Application granted granted Critical
Publication of FR822142A publication Critical patent/FR822142A/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
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
FR822142D 1936-06-27 1937-05-22 Improvement in sound recording Expired FR822142A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US87618A US2125890A (en) 1936-06-27 1936-06-27 Sound recording

Publications (1)

Publication Number Publication Date
FR822142A true FR822142A (en) 1937-12-21

Family

ID=22206251

Family Applications (1)

Application Number Title Priority Date Filing Date
FR822142D Expired FR822142A (en) 1936-06-27 1937-05-22 Improvement in sound recording

Country Status (2)

Country Link
US (1) US2125890A (en)
FR (1) FR822142A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2426367A (en) * 1940-08-02 1947-08-26 Maurer Inc J A Variable density recording optical system
US2437470A (en) * 1940-08-02 1948-03-09 Maurer Inc J A Impulse recording optical system
US2540626A (en) * 1940-08-02 1951-02-06 Maurer Inc J A Impulse recording optical system
US2426366A (en) * 1940-08-02 1947-08-26 Maurer Inc J A Impulse recording optical system
US2880281A (en) * 1956-07-09 1959-03-31 Westrex Corp Sound film recording system
US3652776A (en) * 1970-07-13 1972-03-28 Karl F Milde Jr Apparatus for simulating musical sound employing a scannable record and flying spot scanner

Also Published As

Publication number Publication date
US2125890A (en) 1938-08-09

Similar Documents

Publication Publication Date Title
FR827478A (en) Dictation machine
FR822142A (en) Improvement in sound recording
FR837422A (en) Shoulder cushions
FR47773E (en) Improvements to reproducing machines
FR820383A (en) Improvement in sound recording
FR822173A (en) Improvement in sound recording
FR822018A (en) Improvement in sound recording and reproduction
FR812386A (en) Jaw assembly frame
FR866104A (en) Improvement in sound recording
FR817007A (en) Improvements to drawing benches
FR790599A (en) Improvement in the acoustics of speaking machines
FR820810A (en) Pillow enhancements
FR807678A (en) Special espadrille braid
FR832394A (en) Improvements in sound recording and reproduction
FR802138A (en) Improvements in sound recording and reproduction
FR850365A (en) Improvements to sound recording
FR691802A (en) Improvement in sound recording
FR815271A (en) Soundproof test bench in the open air
FR812855A (en) Large seating surface
FR821739A (en) Improvements to sound recording devices
FR716085A (en) Improvements in sound recording and reproduction
FR828608A (en) Sound recording medium
FR813934A (en) Hotel chopper
FR804099A (en) Model reproducing machine
FR822200A (en) air purifier