DPCM ENCODING OF NTSC COMPOSITE SIGNALS.

Research output: Contribution to journalArticlepeer-review

Abstract

Two subjective evaluation experiments were performed using an experimental digital television (EDIT) encoder. The first experiment led to the selection of a differential pulse-code-modulation (DPCM) quantizer from among a set of seven quantizers yield various tradeoffs between quantizing noise and slope overload. In the second experiment, the picture quality of digitally processes pictures sampled at 10. 7 MHz and coded with four bits per sample was found to be subjectively equivalent to the quality of pictures with an analog signal-to-weighted-noise ratio of about 47 dB.

Original languageEnglish
Pages (from-to)739-743
Number of pages5
JournalSMPTE Journal
Volume86
Issue number10
DOIs
StatePublished - 1 Jan 1977

ASJC Scopus subject areas

  • Instrumentation
  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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