Page "Head-related transfer function" Paragraph 17

If another person's ears were substituted, the individual would not immediately be able to localize sound, as the patterns of enhancement and cancellation would be different from those patterns the person's auditory system is used to.

However, after some weeks, the auditory system would adapt to the new head-related transfer function.

The inter-subject variability in the spectra of HRTFs has been studied through cluster analyses.