• DocumentCode
    1097856
  • Title

    Dynamic amplifiers for phonographic reproduction

  • Author

    Purington, E.

  • Author_Institution
    Hammond Research Corporation, Gloucester, Massachusetts
  • Issue
    3
  • fYear
    1954
  • Firstpage
    80
  • Lastpage
    85
  • Abstract
    In dynamic amplifiers for phonographs, the gain versus frequency characteristics change in accordance with the varying nature of the impressed audio signal. This paper outlines the basic principles of design of such amplifiers for expansion and for background noise reduction purposes. Especial reference is made to the fundamental patent literature in this field.
  • Keywords
    Acoustic noise; Audio systems; Background noise; Communication system control; Dynamic range; Ear; Frequency; Gain control; Low-frequency noise; Noise reduction;
  • fLanguage
    English
  • Journal_Title
    Audio, Transactions of the IRE Professional Group on
  • Publisher
    ieee
  • ISSN
    2168-2976
  • Type

    jour

  • DOI
    10.1109/T-SP.1954.28238
  • Filename
    1163796
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1097856