PMID- 27106329
OWN - NLM
STAT- MEDLINE
DCOM- 20180205
LR  - 20180205
IS  - 1520-8524 (Electronic)
IS  - 0001-4966 (Linking)
VI  - 139
IP  - 4
DP  - 2016 Apr
TI  - On the variation of interaural time differences with frequency.
PG  - 1810
LID - 10.1121/1.4944638 [doi]
AB  - Interaural time difference (ITD) is a major cue to sound localization in humans 
      and animals. For a given subject and position in space, ITD depends on frequency. 
      This variation is analyzed here using a head related transfer functions (HRTFs) 
      database collected from the literature and comprising human HRTFs from 130 
      subjects and animal HRTFs from six specimens of different species. For humans, 
      the ITD is found to vary with frequency in a way that shows consistent 
      differences with respect to a spherical head model. Maximal ITD values were found 
      to be about 800 mus in low frequencies and 600 mus in high frequencies. The ITD 
      variation with frequency (up to 200 mus for some positions) occurs within the 
      frequency range where ITD is used to judge the lateral position of a sound 
      source. In addition, ITD varies substantially within the bandwidth of a single 
      auditory filter, leading to systematic differences between envelope and 
      fine-structure ITDs. Because the frequency-dependent pattern of ITD does not 
      display spherical symmetries, it potentially provides cues to elevation and 
      resolves front/back confusion. The fact that the relation between position and 
      ITDs strongly depends on the sound's spectrum in turn suggests that humans and 
      animals make use of this relationship for the localization of sounds.
FAU - Benichoux, Victor
AU  - Benichoux V
AD  - Institut de la Vision, (INSERM U968, CNRS United Mixte de Recherche 7210, Unite 
      Mixte de Recherche S 968) 17 rue Moreau, 75012 Paris, France.
FAU - Rebillat, Marc
AU  - Rebillat M
AD  - PIMM, Arts et Metiers ParisTech-CNRS-CNAM, 151 Boulevard de l'Hopital, 75013 
      Paris, France.
FAU - Brette, Romain
AU  - Brette R
AD  - Institut de la Vision, (INSERM U968, CNRS United Mixte de Recherche 7210, Unite 
      Mixte de Recherche S 968) 17 rue Moreau, 75012 Paris, France.
LA  - eng
PT  - Comparative Study
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - United States
TA  - J Acoust Soc Am
JT  - The Journal of the Acoustical Society of America
JID - 7503051
SB  - IM
MH  - Acoustic Stimulation
MH  - Acoustics
MH  - Animals
MH  - *Cues
MH  - Databases, Factual
MH  - Head/anatomy & histology
MH  - Humans
MH  - Models, Theoretical
MH  - Motion
MH  - Pattern Recognition, Physiological
MH  - *Pitch Perception
MH  - Sound
MH  - *Sound Localization
MH  - Species Specificity
MH  - Time Factors
MH  - *Time Perception
EDAT- 2016/04/24 06:00
MHDA- 2018/02/06 06:00
CRDT- 2016/04/24 06:00
PHST- 2016/04/24 06:00 [entrez]
PHST- 2016/04/24 06:00 [pubmed]
PHST- 2018/02/06 06:00 [medline]
AID - 10.1121/1.4944638 [doi]
PST - ppublish
SO  - J Acoust Soc Am. 2016 Apr;139(4):1810. doi: 10.1121/1.4944638.