FR583418A - Mirror stand used for sound recording - Google Patents

Mirror stand used for sound recording

Info

Publication number
FR583418A
FR583418A FR583418DA FR583418A FR 583418 A FR583418 A FR 583418A FR 583418D A FR583418D A FR 583418DA FR 583418 A FR583418 A FR 583418A
Authority
FR
France
Prior art keywords
sound recording
stand used
mirror stand
mirror
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
French (fr)
Inventor
Arnold Poulsen
Axel Carl Georg Petersen
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 FR583418A publication Critical patent/FR583418A/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
FR583418D 1923-06-19 1924-06-17 Mirror stand used for sound recording Expired FR583418A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK583418X 1923-06-19

Publications (1)

Publication Number Publication Date
FR583418A true FR583418A (en) 1925-01-13

Family

ID=8151466

Family Applications (1)

Application Number Title Priority Date Filing Date
FR583418D Expired FR583418A (en) 1923-06-19 1924-06-17 Mirror stand used for sound recording

Country Status (1)

Country Link
FR (1) FR583418A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE751441C (en) * 1930-12-16 1953-03-02 Arnold Poulsen Dipl Ing Method and device for producing a low-noise optical sound recording in sprout script
DE870481C (en) * 1931-08-31 1953-03-12 Western Electric Co Method and device for producing a sound film recording in intensity writing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE751441C (en) * 1930-12-16 1953-03-02 Arnold Poulsen Dipl Ing Method and device for producing a low-noise optical sound recording in sprout script
DE870481C (en) * 1931-08-31 1953-03-12 Western Electric Co Method and device for producing a sound film recording in intensity writing

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