Sound source localization identification accuracy: Bandwidth dependencies

William Yost, Xuan Zhong

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Sound source localization accuracy using a sound source identification task was measured in the front, right quarter of the azimuth plane as rms (root-mean-square) error (degrees) for stimulus conditions in which the bandwidth (1/20 to 2 octaves wide) and center frequency (250, 2000, 4000 Hz) of 200-ms noise bursts were varied. Tones of different frequencies (250, 2000, 4000 Hz) were also used. As stimulus bandwidth increases, there is an increase in sound source localization identification accuracy (i.e., rms error decreases). Wideband stimuli (>1 octave wide) produce best sound source localization accuracy (∼ 6°-7° rms error), and localization accuracy for these wideband noise stimuli does not depend on center frequency. For narrow bandwidths (<1 octave) and tonal stimuli, accuracy does depend on center frequency such that highest accuracy is obtained for low-frequency stimuli (centered on 250 Hz), worse accuracy for mid-frequency stimuli (centered on 2000 Hz), and intermediate accuracy for high-frequency stimuli (centered on 4000 Hz).

Original languageEnglish (US)
Pages (from-to)2737-2746
Number of pages10
JournalJournal of the Acoustical Society of America
Volume136
Issue number5
DOIs
StatePublished - Nov 1 2014

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stimuli
bandwidth
acoustics
root-mean-square errors
octaves
broadband
Localization
Stimulus
Sound
azimuth
bursts
low frequencies
Octave

ASJC Scopus subject areas

  • Acoustics and Ultrasonics
  • Arts and Humanities (miscellaneous)

Cite this

Sound source localization identification accuracy : Bandwidth dependencies. / Yost, William; Zhong, Xuan.

In: Journal of the Acoustical Society of America, Vol. 136, No. 5, 01.11.2014, p. 2737-2746.

Research output: Contribution to journalArticle

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