In This Section
Perceptual Effects of Dynamic Range Compression in Popular Music Recordings - January 2014
Accurate Calculation of Radiation and Diffraction from Loudspeaker Enclosures at Low Frequency - June 2013
New Measurement Techniques for Portable Listening Devices: Technical Report - October 2013
AES Journal Forum
Localization of Virtual Sound as a Function of Head-Related Impulse Response Duration
The effect of the duration of head-related impulse responses (HRIRs) on the localization of virtual sound was examined. The accuracy with which three participants could localize virtual and free-field sound was measured using an absolute localization paradigm incorporating 354 possible sound-source locations. HRIRs were truncated to durations ranging from 0.32 to 20.48 ms. The truncation of HRIRs results in a smoothing of their frequency-domain representations, which are known as head-related transfer functions (HRTFs). Whereas some previous studies have suggested that the localization of virtual sound is affected only by extreme smoothing of HRTFs, this study indicates that localization can be subtly disrupted by modest HRTF smoothing. For all participants in the study, the localization performance for virtual sound generated from 10.24- and 20.48-ms HRIRs was as good as that for free-field sound. Localization performance gradually decreased as the HRIR duration was reduced, and first became significantly worse than that for free-field sound at HRIR durations ranging from 0.32 to 5.12 ms. Like previous studies, the present study found that the localization performance for virtual sound was not disrupted dramatically until the HRIR duration was reduced to 0.64 or 0.32 ms.
No AES members have commented on this paper yet.
Subscribe to this discussion
Start a discussion!
If you are not yet an AES member and have something important to say about this paper then we urge you to join the AES today and make your voice heard. You can join online today by clicking here.