Sound localization in a sound field represented by spherical harmonics


Amir Avni and Boaz Rafaely


Sound localization is an important aspect in human hearing, with interaural time difference (ITD) and interaural level difference (ILD) as two binaural cues that complement each other in this goal. Head related transfer functions (HRTFs) can be used to estimate and analyze these cues, where an HRTF representation in the spherical harmonics domain has recently been suggested for analysis. The aim of this paper is the study of the effect of incomplete representation of the sound field in the spherical harmonics domain on the cues of sound localization. An objective study is presented on the relation between the sound field order and the errors in sound localization cues of ITD and ILD.

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