GB427790A - Improvements in and relating to sound reproducing apparatus - Google Patents

Improvements in and relating to sound reproducing apparatus

Info

Publication number
GB427790A
GB427790A GB2777/35A GB277735A GB427790A GB 427790 A GB427790 A GB 427790A GB 2777/35 A GB2777/35 A GB 2777/35A GB 277735 A GB277735 A GB 277735A GB 427790 A GB427790 A GB 427790A
Authority
GB
United Kingdom
Prior art keywords
sound
record
jan
drum
relating
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
GB2777/35A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB427790A publication Critical patent/GB427790A/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

Landscapes

  • Recording Measured Values (AREA)

Abstract

427,790. Photographic sound-records. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. Jan. 28, 1935, No. 2777. Convention date, Jan. 27, 1934. [Class 98 (ii)] [See also Group XXXVIII] A cylindrical sound record member 1 which is supported on a drum 2, for sound reproduction, has the record, which may be produced photographically or mechanically, or ink printed, extending from one end thereof to the other in the form of a helical track. Alternatively, the sound record member may be in the form of a paper &c. strip having one or more sound record tracks thereon and adapted to be wrapped around the drum 2. The record shown is of the double-hump type.
GB2777/35A 1934-01-27 1935-01-28 Improvements in and relating to sound reproducing apparatus Expired GB427790A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US427790XA 1934-01-27 1934-01-27

Publications (1)

Publication Number Publication Date
GB427790A true GB427790A (en) 1935-04-30

Family

ID=21923706

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2777/35A Expired GB427790A (en) 1934-01-27 1935-01-28 Improvements in and relating to sound reproducing apparatus

Country Status (1)

Country Link
GB (1) GB427790A (en)

Similar Documents

Publication Publication Date Title
JPS52123606A (en) Recorder/reproducer
FR809619A (en) Automatic apparatus for recording and reproducing telephone communications
FR781600A (en) Telephone recording and reproducing device
GB427790A (en) Improvements in and relating to sound reproducing apparatus
FR782755A (en) Magnet head for sound recording and reproduction
SU3340A1 (en) A device for magnetic recording and playback of sounds
FR788906A (en) Device for recording, reproducing or printing photophonograms
SU41715A1 (en) Drum or record for sound recording
FR789201A (en) Device for recording, reproducing and printing photographic sound tracks
SU45096A1 (en) The way to get sound recording
GB390509A (en) Improvements in or relating to optical sound records
GB247786A (en) Improvements in or relating to records for sound recording or reproducing machines
GB364022A (en) Improved means for indexing gramophone and like disc records
FR829997A (en) Electromechanical device for recording and reproducing sound oscillations on an endless film
GB456745A (en) Improvements in and relating to optical sound records
GB530629A (en) Improvements in or relating to kinematograph films including a sound record and to their production
GB458898A (en) Improvements in or relating to the making of sound-record or picture-sound record films
FR594993A (en) Membrane for recording and reproducing sounds
GB458784A (en) Improvements in and relating to optical sound recording or reproducing apparatus and records
JPS525213A (en) Voice and picture reproducer
GB545465A (en) Improvements in or relating to the recording of alternating current impulses
GB309183A (en) Process for the reproduction of photographically recorded acoustic events
GB452818A (en) Improvements in dictation machines
CA351213A (en) Sound recording and reproducing apparatus
ES39461U (en) New ad disk (Machine-translation by Google Translate, not legally binding)