• DocumentCode
    887974
  • Title

    A two chip PCM voice CODEC with filters

  • Author

    Haque, Yusuf A. ; Gregorian, Roubik ; Blasco, Richard W. ; Mao, Roger A. ; Nicholson, William E., Jr.

  • Volume
    14
  • Issue
    6
  • fYear
    1979
  • Firstpage
    961
  • Lastpage
    969
  • Abstract
    Architecture and design of a monolithic voice CODEC is described. The CODEC consists of 2 chips-the transmit chip includes the companding coder (nonlinear A/D) along with filtering functions, and the receive chip consists of the expanding decoder (nonlinear D/A) chip with its smoothing filter. Experimental results show the circuit to meet accepted requirements.
  • Keywords
    Active filters; Analogue-digital conversion; Decoding; Digital-analogue conversion; Electronic switching systems; Encoding; Field effect integrated circuits; Large scale integration; Pulse-code modulation; Telephone switching equipment; active filters; analogue-digital conversion; decoding; digital-analogue conversion; electronic switching systems; encoding; field effect integrated circuits; large scale integration; pulse-code modulation; telephone switching equipment; CMOS technology; Capacitors; Circuits; Codecs; Decoding; Filters; Operational amplifiers; Phase change materials; Power amplifiers; Pulse modulation;
  • fLanguage
    English
  • Journal_Title
    Solid-State Circuits, IEEE Journal of
  • Publisher
    ieee
  • ISSN
    0018-9200
  • Type

    jour

  • DOI
    10.1109/JSSC.1979.1051304
  • Filename
    1051304