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Human Reconstruction of Digitized Graphical Signals

  • Coskun DIZMEN*
  • , Errol R. HOFFMANN
  • *Corresponding author for this work

    Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 32 - Refereed conference paper (with host publication)peer-review

    Abstract

    Participants were given sheets printed with signals of sine waves ranging from a single wave to ones having higher frequencies added. The signals were digitized to give data points at a number of sampling rates, the lowest at the Nyquist-Shannon frequency and up three times that frequency. At sampling rates less than the Nyquist-Shannon frequency, a machine is unable to accurately reconstruct a signal. Hence the aim was to determine a person’s ability to reconstruct signals at sampling rates at and higher than the Nyquist-Shannon frequency. Data showed that the RMS error decreased with signal bandwidth and also with sampling rate. At high sampling rates, participants were able to accurately reconstruct the signal, although this was not consistent across participants. At low sampling rates and low bandwidth, there was a tendency to include frequencies in the estimated signal that were not in the actual signal.
    Original languageEnglish
    Title of host publicationProceedings of the International MultiConference of Engineers and Computer Scientists 2018, IMECS 2018
    EditorsS. I. Ao, Oscar Castillo, Craig Douglas, David Dagan Feng, A. M. Korsunsky
    PublisherNewswood Limited
    Pages932-936
    Volume2
    ISBN (Print)9789881404886
    Publication statusPublished - Mar 2018
    Event26th International MultiConference of Engineers and Computer Scientists (IMECS 2018) - , Hong Kong, China
    Duration: 14 Mar 201816 Mar 2018
    http://www.iaeng.org/IMECS2018/

    Publication series

    NameLecture Notes in Engineering and Computer Science
    ISSN (Print)2078-0958
    ISSN (Electronic)2078-0966

    Conference

    Conference26th International MultiConference of Engineers and Computer Scientists (IMECS 2018)
    PlaceHong Kong, China
    Period14/03/1816/03/18
    Internet address

    Research Keywords

    • Signal reconstruction
    • Nyquist criterion
    • signal bandwidth
    • sampling rate

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