Localizing the sources of two independent noises: Role of time varying amplitude differences

William Yost, Christopher A. Brown

    Research output: Contribution to journalArticlepeer-review

    24 Scopus citations


    Listeners localized the free-field sources of either one or two simultaneous and independently generated noise bursts. Listeners localization performance was better when localizing one rather than two sound sources. With two sound sources, localization performance was better when the listener was provided prior information about the location of one of them. Listeners also localized two simultaneous noise bursts that had sinusoidal amplitude modulation (AM) applied, in which the modulation envelope was in-phase across the two source locations or was 180° out-of-phase. The AM was employed to investigate a hypothesis as to what process listeners might use to localize multiple sound sources. The results supported the hypothesis that localization of two sound sources might be based on temporal-spectral regions of the combined waveform in which the sound from one source was more intense than that from the other source. The interaural information extracted from such temporal-spectral regions might provide reliable estimates of the sound source location that produced the more intense sound in that temporal-spectral region.

    Original languageEnglish (US)
    Pages (from-to)2301-2313
    Number of pages13
    JournalJournal of the Acoustical Society of America
    Issue number4
    StatePublished - Apr 2013

    ASJC Scopus subject areas

    • Arts and Humanities (miscellaneous)
    • Acoustics and Ultrasonics


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