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Low-frequency (f ≤ 3 kHz) interaural level differences (left) and interaural time differences (right) of the used HRTF dataset. The angle represents the azimuth of the sound source (φ). The radius describes the magnitude of the level differences (in dB) or time differences (in ms). Both plots show the usual direction-dependent influence of the pinna and the head. However, typical for near-field HRTFs, the ILDs (left) increase significantly as a function of distance, whereas the ITDs (right) remain nearly constant.
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