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Related Concept Videos

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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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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 human ear cannot distinguish between two sources of sound if they happen to reach within a specific time interval, typically 0.1 seconds apart. More than this, and they are perceived as separate sources.
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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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Auditory sensation, commonly called hearing, involves the transformation of sonic waves into neural impulses facilitated by the structures of the auditory organ. The prominent, flesh-like structure on the side of the head, called the auricle, directs sound waves towards the auditory canal. The auricle is often mislabeled as the pinna, a term more aligned with mobile structures like a feline's external ear. The auditory canal penetrates the cranium via the external auditory meatus of the...
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Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
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Better-ear rating based on glimpsing.

Esther Schoenmaker1, Sarinah Sutojo1, Steven van de Par1

  • 1Acoustics Group, Cluster of Excellence Hearing4all, Carl von Ossietzky University, 26111 Oldenburg, Germany.

The Journal of the Acoustical Society of America
|October 2, 2017
PubMed
Summary
This summary is machine-generated.

The better ear, crucial for understanding speech in noise, can be predicted by analyzing speech "glimpses." This study links glimpsing in the better ear to consonant recognition, even considering spatial separation and the contralateral ear.

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Area of Science:

  • Auditory perception
  • Speech processing
  • Psychoacoustics

Background:

  • The 'better ear' traditionally maximizes signal-to-noise ratio.
  • Head shadow effects influence auditory perception with spatially separated sound sources.
  • Better-ear listening strategies are vital for speech intelligibility in complex acoustic environments.

Purpose of the Study:

  • To explore the concept of 'better-ear glimpsing' for predicting speech intelligibility.
  • To investigate the relationship between glimpsed target speech in the better ear and consonant recognition performance.
  • To analyze the impact of spatial processing methods on better-ear listening and speech perception.

Main Methods:

  • Metrics based on 'glimpsing' were used to assess the laterality of the better ear.
  • Better-ear glimpsing was employed as a microscopic predictor for speech intelligibility.
  • Consonant recognition tasks were performed under two spatial processing conditions (with and without better-ear listening).

Main Results:

  • A strong correlation was found between the amount of glimpsed target speech in the better ear and consonant recognition performance.
  • Metrics based on glimpsing effectively represented the laterality of the expected better ear.
  • The amount of better-ear glimpses and angular separation of sources explained a significant portion of performance, with a minor role for the contralateral ear.

Conclusions:

  • Better-ear glimpsing is a valid microscopic predictor of speech intelligibility.
  • Spatial separation and better-ear listening significantly impact speech recognition.
  • Auditory perception in noise involves complex interactions, potentially including the contralateral ear.