GB554119A - Improvements in or relating to systems for the electrical transmission of sounds - Google Patents

Improvements in or relating to systems for the electrical transmission of sounds

Info

Publication number
GB554119A
GB554119A GB13852/42A GB1385242A GB554119A GB 554119 A GB554119 A GB 554119A GB 13852/42 A GB13852/42 A GB 13852/42A GB 1385242 A GB1385242 A GB 1385242A GB 554119 A GB554119 A GB 554119A
Authority
GB
United Kingdom
Prior art keywords
control
sounds
relating
systems
electrical transmission
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
GB13852/42A
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB554119A publication Critical patent/GB554119A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/04—Control of transmission; Equalising

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

554,119. Selective control. WESTERN ELECTRIC CO., Inc. Oct. 2, 1942, No. 13852. Convention date, Oct. 15, 1941. Drawings to Specification. [Class 40 (i)] [Also in Group XXXIX] In a recording or re-recording system for sound films having one or more sound tracks and a control track (see Group XXXIX) the alternating current in the control track is varied in frequency to control features of reproduction such as tone, switching in and out of loudspeakers or lighting and other effects as well as in amplitude to control volume range.
GB13852/42A 1941-10-15 1942-10-02 Improvements in or relating to systems for the electrical transmission of sounds Expired GB554119A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US554119XA 1941-10-15 1941-10-15

Publications (1)

Publication Number Publication Date
GB554119A true GB554119A (en) 1943-06-21

Family

ID=21997619

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13852/42A Expired GB554119A (en) 1941-10-15 1942-10-02 Improvements in or relating to systems for the electrical transmission of sounds

Country Status (1)

Country Link
GB (1) GB554119A (en)

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