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Related Concept Videos

Perception of Sound Waves01:01

Perception of Sound Waves

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The human ear is not equally sensitive to all frequencies in the audible range. It may perceive sound waves with the same pressure but different frequencies as having different loudness. Moreover, the perception of sound waves depends on the health of an individual's ears, which decays with age. The health of one's ears may also be affected by regular exposure to loud noises.
The pitch of a sound depends on the frequency and the pressure amplitude of the source. Two sounds of the same...
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Perceiving Loudness, Pitch, and Location01:21

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The human brain perceives pitch through two primary mechanisms reflected in place theory and frequency theory. Each mechanism describes how sound waves are interpreted as specific pitches by the brain, offering insights into the intricate processes of auditory perception.
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Hearing

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When we hear a sound, our nervous system is detecting sound waves—pressure waves of mechanical energy traveling through a medium. The frequency of the wave is perceived as pitch, while the amplitude is perceived as loudness.
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The Cochlea01:13

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The cochlea is a coiled structure in the inner ear that contains hair cells—the sensory receptors of the auditory system. Sound waves are transmitted to the cochlea by small bones attached to the eardrum called the ossicles, which vibrate the oval window that leads to the inner ear. This causes fluid in the chambers of the cochlea to move, vibrating the basilar membrane.
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Auditory Perception01:17

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The auditory system is essential for sound perception, utilizing various critical structures. When sound waves enter the outer ear, they travel through the ear canal and cause the eardrum to vibrate. These vibrations are then transmitted to the middle ear, where three tiny bones – the malleus, incus, and stapes – amplify the sound. This amplification is crucial, as it ensures that the sound vibrations are strong enough to be conveyed to the inner ear. These vibrations then reach the...
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Auditory Pathway

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Auditory pathways constitute the complex neural circuits responsible for transmitting and interpreting auditory information from the peripheral auditory system to the brain. Sound waves are initially captured by the outer ear, funneled through the ear canal, and reach the tympanic membrane (eardrum). These vibrations are transmitted via the middle ear's ossicles to the inner ear's cochlea.
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Related Experiment Video

Updated: Feb 18, 2026

Behavioral Assessment of Hearing in 2 to 4 Year-old Children: A Two-interval, Observer-based Procedure Using Conditioned Play-based Responses
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Segmental and Suprasegmental Perception in Children Using Hearing Aids.

Kaitlyn A Wenrich1, Lisa S Davidson1,2,3, Rosalie M Uchanski1,2

  • 1Program in Audiology and Communication Science, St. Louis, MO.

Journal of the American Academy of Audiology
|November 14, 2017
PubMed
Summary
This summary is machine-generated.

This study found that while hearing aid audibility doesn't correlate with segmental speech perception, unaided low-frequency hearing is linked to suprasegmental perception. Frequency resolution ability significantly impacts all measured outcomes in children with hearing aids.

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Area of Science:

  • Audiology
  • Speech-Language Pathology
  • Developmental Psychology

Background:

  • Suprasegmental and segmental speech perception are foundational for spoken language development and communication.
  • Research on suprasegmental perception in children with hearing aids (HAs), especially those with residual hearing, is limited.
  • Understanding the relationship between hearing thresholds, speech perception, and hearing device benefit is crucial for optimizing recommendations.

Purpose of the Study:

  • To investigate the link between audibility (hearing thresholds, speech intelligibility) and both segmental and suprasegmental speech perception in children with HAs.
  • To explore how frequency resolution ability (spectral modulation detection - SMD), speech perception, and receptive language relate in this population.

Main Methods:

  • A prospective cross-sectional study involving 23 children aged 4-11 years.
  • Data collected included audiological history, hearing device information, segmental/suprasegmental speech perception, SMD, and receptive vocabulary.
  • Correlational analyses were used to assess relationships between audibility and outcome measures.

Main Results:

  • No significant correlation was found between audibility and segmental speech perception.
  • Unaided low-frequency hearing thresholds significantly correlated with suprasegmental speech perception.
  • Spectral modulation detection (SMD) significantly correlated with audibility, segmental and suprasegmental perception, and vocabulary.
  • Age was significantly correlated with all outcome measures except audibility.

Conclusions:

  • Well-fitted hearing aids may maximize audibility, explaining the lack of correlation with segmental perception.
  • Low-frequency unaided hearing's link to suprasegmental perception highlights the importance of residual low-frequency hearing.
  • Frequency resolution ability (SMD) shows significant promise as a predictor of various auditory and linguistic outcomes.
  • Developmental effects are evident, as age correlates with most measured outcomes.