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Article Dans Une Revue Journal of the Acoustical Society of America Année : 2014

A comparative study of interaural time delay estimation methods

Brian F. G. Katz
Markus Noisternig

Résumé

The Interaural Time Delay (ITD) is an important binaural cue for sound source localization. Calculations of ITD values are obtained either from measured time domain Head-Related Impulse Responses (HRIRs) or from their frequency transform Head-Related Transfer Functions (HRTFs). Numerous methods exist in current literature, based on a variety of definitions and assumptions of the nature of the ITD as an acoustic cue. This work presents a thorough comparative study of the degree of variability between some of the most common methods for calculating the ITD from measured data. Thirty-two different calculations or variations are compared for positions on the horizontal plane for the HRTF measured on both a KEMAR mannequin and a rigid sphere. Specifically, the spatial variations of the methods are investigated. Included is a discussion of the primary potential causes of these differences, such as the existence of multiple peaks in the HRIR of the contra-lateral ear for azimuths near the inter-aural axis due to multipath propagation and head/pinnae shadowing.
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Dates et versions

hal-01107079 , version 1 (20-01-2015)

Identifiants

  • HAL Id : hal-01107079 , version 1

Citer

Brian F. G. Katz, Markus Noisternig. A comparative study of interaural time delay estimation methods. Journal of the Acoustical Society of America, 2014, 6 (135), pp.3530-3540. ⟨hal-01107079⟩
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