• DocumentCode
    753888
  • Title

    Bit Rate Per Channel Halving in PCM Multiplexes by Speech Interpolation and Adaptive Quantization

  • Author

    Molinari, Alcide M. ; Vagliani, Federico C.

  • Author_Institution
    Telettra S.p.A., Italy
  • Volume
    26
  • Issue
    5
  • fYear
    1978
  • fDate
    5/1/1978 12:00:00 AM
  • Firstpage
    638
  • Lastpage
    646
  • Abstract
    An all digital system, labeled PCM.RR. is presented, which enables the doubling of traffic capacity of PCM links. This is obtained, although keeping the transmission quality impairment very close to the normal PCM standards, by properly using "Adaptive Quantization" and "Speech Interpolation" performed by means of a "Speech Detector" that works directly on the A -law compressed digital signal.
  • Keywords
    Adaptive coding; PCM communication; Speech coding; Speech transmission; Time-division multiplexing; Analog-digital conversion; Bit rate; Digital modulation; Digital systems; Helium; Interpolation; Phase change materials; Quantization; Speech; Time division multiplexing;
  • fLanguage
    English
  • Journal_Title
    Communications, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0090-6778
  • Type

    jour

  • DOI
    10.1109/TCOM.1978.1094132
  • Filename
    1094132
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=753888