Retrieving "Head Size Variation" from the archives

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1. Psychoacoustics

   Linked via "head size variation"

   For higher frequencies (above $\approx 3,000 \text{ Hz}$), the physical difference in intensity, caused by the acoustic shadowing effect of the head, dominates. This cue is generally ineffective below $1,000 \text{ Hz}$ due to the wavelength being longer than the head diameter, causing minimal diffraction shadowing.
   The effective crossover point where ITD and ILD cues contribute equally is referred to as the **Monaural Equivalence Zen…