title: Modeling sound-source localization in sagittal planes for human listeners.
abstract: Monaural spectral features are important for human sound-source localization in sagittal planes, including front-back discrimination and elevation perception. These directional features result from the acoustic filtering of incoming sounds by the listener's morphology and are described by listener-specific head-related transfer functions (HRTFs). This article proposes a probabilistic, functional model of sagittal-plane localization that is based on human listeners' HRTFs. The model approximates spectral auditory processing, accounts for acoustic and non-acoustic listener specificity, allows for predictions beyond the median plane, and directly predicts psychoacoustic measures of localization performance. The predictive power of the listener-specific modeling approach was verified under various experimental conditions: The model predicted effects on localization performance of band limitation, spectral warping, non-individualized HRTFs, spectral resolution, spectral ripples, and high-frequency attenuation in speech. The functionalities of vital model components were evaluated and discussed in detail. Positive spectral gradient extraction, sensorimotor mapping, and binaural weighting of monaural spatial information were addressed in particular. Potential applications of the model include predictions of psychophysical effects, for instance, in the context of virtual acoustics or hearing assistive devices.
authors.affiliation: Acoustics Research Institute, Austrian Academy of Sciences, Wohllebengasse 12-14, A-1040 Vienna, Austria.
authors.forename: Robert
authors.initials: R
authors.lastname: Baumgartner
authors.affiliation: Acoustics Research Institute, Austrian Academy of Sciences, Wohllebengasse 12-14, A-1040 Vienna, Austria.
authors.forename: Piotr
authors.initials: P
authors.lastname: Majdak
authors.affiliation: Acoustics Research Institute, Austrian Academy of Sciences, Wohllebengasse 12-14, A-1040 Vienna, Austria.
authors.forename: Bernhard
authors.initials: B
authors.lastname: Laback
mesh_terms: D000161:Acoustic Stimulation; D000162:Acoustics; D003463:Cues; D004192:Discrimination, Psychological; D006801:Humans; D008962:Models, Theoretical; D009038:Motion; D046709:Pattern Recognition, Physiological; D011571:Psychoacoustics; D013016:Sound; D013017:Sound Localization; D013067:Speech Perception; D013997:Time Factors
references.citation: J Neurosci. 2005 Apr 6;25(14):3680-91
references.pmid: 15814799
references.citation: J Acoust Soc Am. 2010 May;127(5):3060-72
references.pmid: 21117755
references.citation: Exp Brain Res. 2003 Feb;148(4):458-70
references.pmid: 12582829
references.citation: Nat Neurosci. 1998 Sep;1(5):417-21
references.pmid: 10196533
references.citation: J Acoust Soc Am. 2000 Sep;108(3 Pt 1):1215-35
references.pmid: 11008822
references.citation: J Acoust Soc Am. 1999 Sep;106(3 Pt 1):1480-92
references.pmid: 10489705
references.citation: J Acoust Soc Am. 2013 Apr;133(4):2055-68
references.pmid: 23556576
references.citation: J Neurosci. 2004 Oct 20;24(42):9291-302
references.pmid: 15496665
references.citation: Curr Biol. 2004 May 4;14(9):R335-8
references.pmid: 15120083
references.citation: J Acoust Soc Am. 2002 Oct;112(4):1583-96
references.pmid: 12398464
references.citation: Hear Res. 2000 Oct;148(1-2):74-87
references.pmid: 10978826
references.citation: J Acoust Soc Am. 2001 Mar;109(3):1110-22
references.pmid: 11303925
references.citation: J Acoust Soc Am. 1992 Mar;91(3):1637-47
references.pmid: 1564200
references.citation: Front Psychol. 2014 Apr 23;5:319
references.pmid: 24795672
references.citation: Hear Res. 2006 Mar;213(1-2):99-106
references.pmid: 16466875
references.citation: J Acoust Soc Am. 1992 Nov;92(5):2607-24
references.pmid: 1479124
references.citation: J Acoust Soc Am. 2007 Jun;121(6):3677-88
references.pmid: 17552719
references.citation: J Acoust Soc Am. 2004 Jun;115(6):3124-41
references.pmid: 15237837
references.citation: J Neurophysiol. 2007 Sep;98(3):1763-74
references.pmid: 17596417
references.citation: J Acoust Soc Am. 1974 Dec;56(6):1829-34
references.pmid: 4443482
references.citation: J Acoust Soc Am. 1998 May;103(5 Pt 1):2634-48
references.pmid: 9604358
references.citation: J Acoust Soc Am. 2010 Feb;127(2):990-1001
references.pmid: 20136221
references.citation: Hear Res. 2012 Apr;286(1-2):9-18
references.pmid: 22616091
references.citation: J Acoust Soc Am. 2006 Sep;120(3):1474-92
references.pmid: 17004470
references.citation: Atten Percept Psychophys. 2010 Feb;72(2):454-69
references.pmid: 20139459
references.citation: Hear Res. 2013 Oct;304:20-7
references.pmid: 23769958
references.citation: Hear Res. 2010 Feb;260(1-2):30-46
references.pmid: 19900525
references.citation: J Acoust Soc Am. 2004 Apr;115(4):1705-13
references.pmid: 15101649
references.citation: J Neurosci. 2005 Jun 1;25(22):5413-24
references.pmid: 15930391
references.citation: Neuroreport. 2005 Dec 19;16(18):2065-7
references.pmid: 16317356
references.citation: J Acoust Soc Am. 1999 Sep;106(3 Pt 1):1493-510
references.pmid: 10489706
references.citation: J Acoust Soc Am. 2001 Apr;109(4):1596-603
references.pmid: 11325130
references.citation: J Acoust Soc Am. 2002 May;111(5 Pt 1):2219-36
references.pmid: 12051442
references.citation: J Acoust Soc Am. 2013 Sep;134(3):2148-59
references.pmid: 23967945
references.citation: J Acoust Soc Am. 2005 Jul;118(1):353-63
references.pmid: 16119356
references.citation: J Acoust Soc Am. 2003 Jul;114(1):430-45
references.pmid: 12880054