Intensity changes in two-tone complexes and model predictions

N.J. Versfeld

    Research output: Contribution to journalMeeting AbstractAcademic

    Abstract

    Thresholds for changes in the amplitudes of two-tone complexes have been measured as a function of frequency separation. Thresholds have been measured both with and without a roving intensity level. Thresholds for changes in the spectral shape of two-tone complexes were generally lower than those for changes in the overall intensity. Thresholds for the former changes are lowest at a frequency separation of one semitone. Thresholds for the latter decrease as a function of frequency separation. Two models have been applied to the data. For narrow-bandwidth signals, the EWAIF model [Feth, Percept. Psychophys. 15, 375–378 (1974)] can partly account for the obtained data. For (partially) resolved signals, the two-channel model [Durlach et al., J. Acoust. Soc. Am. 80, 63–72 (1986)] can account for the data. The obtained values of the model parameters show that the auditory system does not process the changes optimally, in the sense that amplitude changes in one component contribute more in the detection process than those in the other component.
    Original languageEnglish
    Pages (from-to)2318-2319
    JournalJournal of the Acoustical Society of America
    Volume92
    Issue number4
    DOIs
    Publication statusPublished - 1992

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    @article{807e0cd79e8a44ae8b1b7fb18d9de9bc,
    title = "Intensity changes in two-tone complexes and model predictions",
    abstract = "Thresholds for changes in the amplitudes of two-tone complexes have been measured as a function of frequency separation. Thresholds have been measured both with and without a roving intensity level. Thresholds for changes in the spectral shape of two-tone complexes were generally lower than those for changes in the overall intensity. Thresholds for the former changes are lowest at a frequency separation of one semitone. Thresholds for the latter decrease as a function of frequency separation. Two models have been applied to the data. For narrow-bandwidth signals, the EWAIF model [Feth, Percept. Psychophys. 15, 375–378 (1974)] can partly account for the obtained data. For (partially) resolved signals, the two-channel model [Durlach et al., J. Acoust. Soc. Am. 80, 63–72 (1986)] can account for the data. The obtained values of the model parameters show that the auditory system does not process the changes optimally, in the sense that amplitude changes in one component contribute more in the detection process than those in the other component.",
    author = "N.J. Versfeld",
    year = "1992",
    doi = "10.1121/1.405038",
    language = "English",
    volume = "92",
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    journal = "Journal of the Acoustical Society of America",
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    Intensity changes in two-tone complexes and model predictions. / Versfeld, N.J.

    In: Journal of the Acoustical Society of America, Vol. 92, No. 4, 1992, p. 2318-2319.

    Research output: Contribution to journalMeeting AbstractAcademic

    TY - JOUR

    T1 - Intensity changes in two-tone complexes and model predictions

    AU - Versfeld, N.J.

    PY - 1992

    Y1 - 1992

    N2 - Thresholds for changes in the amplitudes of two-tone complexes have been measured as a function of frequency separation. Thresholds have been measured both with and without a roving intensity level. Thresholds for changes in the spectral shape of two-tone complexes were generally lower than those for changes in the overall intensity. Thresholds for the former changes are lowest at a frequency separation of one semitone. Thresholds for the latter decrease as a function of frequency separation. Two models have been applied to the data. For narrow-bandwidth signals, the EWAIF model [Feth, Percept. Psychophys. 15, 375–378 (1974)] can partly account for the obtained data. For (partially) resolved signals, the two-channel model [Durlach et al., J. Acoust. Soc. Am. 80, 63–72 (1986)] can account for the data. The obtained values of the model parameters show that the auditory system does not process the changes optimally, in the sense that amplitude changes in one component contribute more in the detection process than those in the other component.

    AB - Thresholds for changes in the amplitudes of two-tone complexes have been measured as a function of frequency separation. Thresholds have been measured both with and without a roving intensity level. Thresholds for changes in the spectral shape of two-tone complexes were generally lower than those for changes in the overall intensity. Thresholds for the former changes are lowest at a frequency separation of one semitone. Thresholds for the latter decrease as a function of frequency separation. Two models have been applied to the data. For narrow-bandwidth signals, the EWAIF model [Feth, Percept. Psychophys. 15, 375–378 (1974)] can partly account for the obtained data. For (partially) resolved signals, the two-channel model [Durlach et al., J. Acoust. Soc. Am. 80, 63–72 (1986)] can account for the data. The obtained values of the model parameters show that the auditory system does not process the changes optimally, in the sense that amplitude changes in one component contribute more in the detection process than those in the other component.

    U2 - 10.1121/1.405038

    DO - 10.1121/1.405038

    M3 - Meeting Abstract

    VL - 92

    SP - 2318

    EP - 2319

    JO - Journal of the Acoustical Society of America

    JF - Journal of the Acoustical Society of America

    SN - 0001-4966

    IS - 4

    ER -