Perceptual Evaluation of HRTFs with Reduced Spatial Complexity
* Presenting author
Binaural rendering of Ambisonic signals is of great interest in the fields of virtual reality, immersive media, and virtual acoustics. Typically, the spatial order of head related transfer functions (HRTFs) is considerably higher than the order of the Ambisonic signals. However, rendering of binaural signals in the Ambisonics domain requires matching orders which are usually achieved by removing higher order components of the HRTF representation. This order reduction has a detrimental effect on the binaurally rendered signals, and perceptual evaluations indicate limited externalization, localization accuracy, and altered timbre. In this contribution HRTF preprocessing methods which allow for effective reduction of spatial complexity and near-transparent binaural rendering of Ambisonic signals are investigated.