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Repeatability of Localization Cues in HRTF Data Bases

Head Related Transfer Function (HRTF) represents the time-spectral filtering that head and torso do to a sound that goes from a sound source to the ears. These transfer functions bring the localization cues which vary according to sound source position (azimuth and elevation). Human auditory system uses such localization cues for estimating the sound direction. HRTF are used in two ways. One way is for synthesizing binaural sound (virtual audio 3D). Second way is for analyzing binaural sounds in order to estimate the localization of sound sources. Therefore HRTF are important and useful data for researchers. There are few public HRTF data base. The most known is the Kemar Data Base from the MIT. It is also the Cipic Data Base from UC Davis and the Itakura Data Base. In this work, we present a new public data base for researching use available on a web. The data base has been measured on the Head and Torso Simulator 4100 by Brüel & Kjaer. In addition a comparative study of localization cues from the data bases is carried out for showing their repeatability.

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