The individualization of HRTFs is often considered the most relevant factor in the application of binaural techniques. However, the literature reviewed in this paper demonstrates that not necessarily the degree of HRTF customization determines the plausibility of the system. Multiple contextual factors define the plausibility in binaural audio perception, such as head tracking, the existence of reverberant information in the signal, the degree of divergence between the virtual sound environment and the real listening environment, and auditory adaptation processes. Training in spatial localization has a positive influence as it generates adaptation to spectral cues different from one’s own, facilitating the construction of new spatial maps through sensory feedback.
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