Individual pinnae shapes make spatial hearing uniquely personal and learned

Evidence

It seems to follow from the very blueprint of our auditory system that much of what we call “hearing” has to do with the internal bureaucracy of the auditory planet. The structure of our hearing equipment to some extent already fashions the sounds we hear. — George Michelsen Foy, Zero Decibels, 561 (#expands, via linked claim)

Categorization

• XREF: connects to: The pinna’s folded shape encodes sound direction as spectral echoes; Adults relearn spatial localization within six weeks of altered pinnae; Adults adapt to altered pinna cues within about six weeks (+10 more)

Related

• The pinna’s folded shape encodes sound direction as spectral echoes (similarity 0.93)
• Adults relearn spatial localization within six weeks of altered pinnae (similarity 0.88)
• Each person’s directional hearing is calibrated to their own ear shape (similarity 0.88)
• The auditory system continually relearns to decode pinna-imposed spectral cues. (similarity 0.87)
• Pinna shape creates learned, person-specific comb filters that aid sound localization (similarity 0.87)
• Pinna, head, and torso shapes encode spatial direction into ear-canal sounds (similarity 0.87)
• Spatial hearing is calibrated through learning to each listener’s head and pinna geometry (similarity 0.86)
• Each person’s unique ear shape requires individualized acoustic rendering for 3-D audio (similarity 0.84)
• Head-related transfer functions encode how the head and pinna shape spatial hearing (similarity 0.83)
• The outer ear’s resonant shapes enable front-back sound localization (similarity 0.83)
• Head movement and pinna shape resolve cone-of-confusion ambiguities (similarity 0.82)
• Head and pinna scattering imprint direction-dependent spectral notches onto the ear signal. (similarity 0.82)
• Each person’s directional hearing cues are learned and specific to their own ears (similarity 0.82)
• The pinna’s low-frequency notch shifts upward in frequency as sound source elevates (similarity 0.82)
• Pinnae shape the sound spectrum to encode elevation and front-back position (similarity 0.82)

Broader Connections

• Head-related transfer functions encode how the head and pinna shape spatial hearing #expands (0.95)
• Localization improves as we learn our own ears’ direction cues through experience #corroborates (0.90)
• The physical structure of the ear itself shapes and constructs perceived sound #expands (0.85) — George Michelsen Foy, Zero Decibels, 561
• Binaural microphones capture exact tympanum signals but depend on one’s own head shape #corroborates (0.80)
• Hearing-impaired subjects localized via pinna frequency shaping, not level differences #exemplifies (0.70) — Dijk, Pim van, Physiology, Psychoacoustics and…, 3124
• Lateral sounds drive spatial perception more than frontal or rear sounds #qualifies (0.70)