A normal-sounding ear is internally a sound source audible in the closed canal

Evidence

Otoacoustic emissions—sounds generated by your own hearing system—are a condition everyone’s flesh is to some degree heir to, simply because the hearing apparatus, from ear to brain, works not only as a receptor but as an amplifier. — George Michelsen Foy, Zero Decibels, 329 (#expands, via linked claim)

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 ear canal acts as a quarter-wavelength resonator amplifying 3-4 kHz by 10 dB — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 728; Outer ear canal resonance explains peak sensitivity near 4 kHz — Eric J. Heller, Why You Hear What You Hear- An…, 2005; OAEs reveal cochlear function through sounds emitted back into the ear canal (+6 more)

Related

• OAEs reveal cochlear function through sounds emitted back into the ear canal (similarity 0.88)
• The cochlea actively amplifies sound and emits echoes that reveal inner-ear health (similarity 0.85)
• The ear canal acts as a quarter-wavelength resonator amplifying 3-4 kHz by 10 dB (similarity 0.85)
• Each new cochlear structure discovered was cast as the resonant sound receiver (similarity 0.84)
• Outer and middle ear structures provide frequency-specific amplification of incoming sound (similarity 0.83)
• Low-frequency sound can awaken silent inner ears to emit spontaneous tones (similarity 0.82)
• The human ear itself generates sound as a byproduct of amplifying incoming signals (similarity 0.82)
• Outer and middle ear transfer function determines loudness across frequency. (similarity 0.81)
• Outer ear canal resonance explains peak sensitivity near 4 kHz (similarity 0.80)
• Loud noise damage can make the cochlea spontaneously generate its own noise (similarity 0.80)
• Otoacoustic emissions originate peripherally before neural encoding begins (similarity 0.80)
• The ear canal’s quarter-wavelength resonance boosts speech-critical frequencies around 3-4 kHz. (similarity 0.80)
• The middle ear amplifies sound pressure through three mechanical mechanisms (similarity 0.80)
• Frequency-domain analysis mirrors how the human ear processes sound (similarity 0.80)
• Equal-loudness contours reflect outer and middle ear amplification characteristics. (similarity 0.79)

Broader Connections

• The human ear itself generates sound as a byproduct of amplifying incoming signals #expands (0.85) — George Michelsen Foy, Zero Decibels, 329
• OAEs reveal cochlear function through sounds emitted back into the ear canal #expands (0.80)
• Residual sound at an occluded ear mediates part of loudness constancy #expands (0.80)
• The physical structure of the ear itself shapes and constructs perceived sound #expands (0.80) — George Michelsen Foy, Zero Decibels, 561
• Low-frequency sound can awaken silent inner ears to emit spontaneous tones #expands (0.78)
• Combination tones can be objectively measured in the outer ear canal #corroborates (0.75)
• The ear canal acts as a quarter-wavelength resonator amplifying 3-4 kHz by 10 dB #complicates (0.72) — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 728
• Outer ear canal resonance explains peak sensitivity near 4 kHz #qualifies (0.72) — Eric J. Heller, Why You Hear What You Hear- An…, 2005
• Human hearing normalizes wildly different acoustic environments to a constant source #complicates (0.72) — , Toole, Floyd E - Sound reproduction-…, 810