@conference {2644,
	title = {On the Minimum-phase Nature of Head-Related Transfer Functions},
	booktitle = {the 125th Audio Engineering Society Convention},
	year = {2008},
	note = {\&nbsp;},
	month = {10/2008},
	publisher = {AES},
	organization = {AES},
	address = {San Francisco, CA, USA},
	abstract = {\&nbsp;For binaural synthesis, head-related transfer functions (HRTFs) are commonly implemented as pure delays followed by minimum-phase systems. Here, the minimum-phase nature of HRTFs is studied. The cross-coherence between minimum-phase and unprocessed measured HRTFs was seen to be greater than 0.9 for a vast majority of the HRTFs, and was rarely below 0.8. Non-minimum-phase filter components resulting in reduced cross-coherence appeared in frontal and ipsilateral directions. The excess group delay indicates that these non-minimum-phase components are associated with regions of moderate HRTF energy. Other regions of excess phase correspond to high-frequency spectral nulls, and have little effect on cross-coherence.},
	keywords = {binaural sound, HRTF, minimum-phase system},
	url = {http://www.aes.org/e-lib/browse.cfm?elib=14698},
	author = {Juhan Nam and Miriam Kolar and Jonathan Abel}
}
