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Related Concept Videos

Auditory Perception01:17

Auditory Perception

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 cochlea, a...
Factors Affecting Perception01:25

Factors Affecting Perception

Perception is influenced by perceptual set, context, motivation, and emotion. Perceptual set, or perceptual expectancy, refers to the tendency to perceive things in a particular way, influenced by previous experiences and expectations. This phenomenon affects the interpretation of stimuli, creating a set of mental tendencies and assumptions that impact sensory perceptions of sound, taste, touch, and sight.
An illustrative example of a perceptual set is the scenario where an airline pilot told...

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Individual Differences Underlying Preference for Processing Delay in Open-Fit Hearing Aids.

Borgný Súsonnudóttir1,2,3, Borys Kowalewski3, Georg Stiefenhofer3

  • 1Department of Clinical Research, University of Southern Denmark, Odense, Denmark.

Trends in Hearing
|December 13, 2024
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Summary

Preferred processing delay in open-fit hearing aids is linked to spectral processing ability. Good spectral processing is associated with a preference for shorter delays, guiding hearing aid fitting.

Keywords:
acoustic couplingcomb filterdelayfrequency resolutionhearing aids

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Area of Science:

  • Audiology and Hearing Science
  • Signal Processing in Acoustics

Background:

  • Open-fit digital hearing aids (HAs) can cause comb-filter effects due to interactions between processed and unprocessed sound.
  • Processing delay in HAs is a critical factor influencing these acoustic interactions and user perception.

Purpose of the Study:

  • To investigate the relationship between preferred processing delay in open-fit hearing aids and individual spectral and temporal processing abilities.
  • To determine if listening habits influence processing delay preferences.
  • To assess the utility of spectral processing ability in guiding HA prescription.

Main Methods:

  • Assessed delay preference using a paired-comparison task with a hearing aid simulator across five processing delays (0-10 ms).
  • Evaluated spectral processing with a spectral ripple discrimination (SRD) task and temporal processing with a gap detection task.
  • Collected self-reported listening habits using a standardized questionnaire.

Main Results:

  • Processing delay significantly impacted preference scores, with a clear distinction between shorter (0-0.5 ms) and longer (2-10 ms) delays.
  • Spectral processing ability, specifically performance on the SRD task, was a significant predictor of delay preference.
  • Better spectral processing abilities correlated with a preference for shorter processing delays.

Conclusions:

  • Individual spectral processing capabilities are strongly associated with preferred processing delays in open-fit hearing aids.
  • Assessing spectral processing abilities can inform and guide the fitting of open-fit hearing aids for optimal user experience.