On the use of subjective HTRF evaluations for creating global perceptual similarity metrics of assessors and assessees
Katz, Brian F. G.
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In the absence of a well suited measure for quantifying binaural data variations, this study presents the use of a global perceptual distance metric which can describe both HRTF as well as listener similarities. The metric is derived based on subjective evaluations of binaural renderings of a sound moving along predefined trajectories in the horizontal and median planes. Its characteristics and advantages in describing data distributions based on perceptually relevant attributes are discussed. In addition, the use of 24 HRTFs from two different databases of origin allows for an evaluation of the perceptual impact of some database-dependent characteristics on spatialization. The effectiveness of the experimental design as well as the correlation between the HRTF evaluations of the two plane trajectories are also discussed.