• DocumentCode
    1378419
  • Title

    The Bell System speakerphone

  • Author

    Clemency, W. F. ; Romanow, F. F. ; Rose, A. F.

  • Author_Institution
    Bell Telephone Laboratories, Inc., Murray Hill, N. J.
  • Volume
    76
  • Issue
    2
  • fYear
    1957
  • fDate
    5/1/1957 12:00:00 AM
  • Firstpage
    148
  • Lastpage
    153
  • Abstract
    The Bell System Speakerphone provides hands-free telephony. It permits the telephone customer to receive over a loudspeaker and to transmit over a microphone located a convenient distance away. The techniques and components employed in the design of the Speakerphone are described. A survey of customer reactions to this type of telephone set indicates that 90 per cent are fairly or entirely satisfied with its performance.
  • Keywords
    Acoustics; Coils; Couplings; Loudspeakers; Microphones; Speech; Telephone sets;
  • fLanguage
    English
  • Journal_Title
    American Institute of Electrical Engineers, Part I: Communication and Electronics, Transactions of the
  • Publisher
    ieee
  • ISSN
    0097-2452
  • Type

    jour

  • DOI
    10.1109/TCE.1957.6372645
  • Filename
    6372645
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1378419