Interrelation Analysis of Distance Metrics for Head-Related Transfer Functions (vor Ort)
* Presenting author
Differences between sets of measured or approximated head-related transfer functions (HRTFs) largely impact the state of realism achieved in binaural rendering. Auditory perception, regarding both timbral and spatial aspects, can be altered by the presence of non-individual auditory cues and the loss of detail in individualized HRTFs. For direct comparison and evaluation of HRTF accuracy, various metrics have been previously introduced. The present work examines the redundancy between several chosen metrics. Three sets of HRTFs (acoustically measured, reconstructed from principal components, and individualized based on anthropometric features) are used to identify how inter- and intra-individual cue differences, as well as varying levels of representation accuracy, are captured by the measures studied. The goal is to define a subset of perceptually orthogonal metrics, which can be used for a more holistic prediction of the perceived error.