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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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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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Author Spotlight: Optimizing EAS with Long Electrodes for Enhanced Cochlear Coverage and Hearing Preservation
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Enhancing Auditory Selective Attention Using a Visually Guided Hearing Aid.

Gerald Kidd1

  • 1Department of Speech, Language, and Hearing Sciences and Hearing Research Center, Boston University, MA.

Journal of Speech, Language, and Hearing Research : JSLHR
|October 20, 2017
PubMed
Summary
This summary is machine-generated.

A new visually guided hearing aid (VGHA) uses eye gaze to steer acoustic beamforming, improving sound segregation for people with and without hearing loss. This technology helps listeners focus on desired speech in noisy environments.

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Area of Science:

  • Auditory Neuroscience
  • Acoustic Engineering
  • Human-Computer Interaction

Background:

  • The

Purpose of the Study:

  • To introduce a novel approach for enhancing sound source segregation and auditory selective attention.
  • To describe the conceptual design, implementation, and results of a visually guided hearing aid (VGHA).

Main Methods:

  • Developed a prototype visually guided hearing aid (VGHA) for research purposes.
  • Employed acoustic beamforming steered by eye gaze to improve sound source segregation.
  • Investigated the ability of listeners to segregate and attend to target sound sources amidst competing sounds.

Main Results:

  • Listeners with normal hearing effectively use an attention-based spatial filter for selective auditory attention.
  • Listeners with sensorineural hearing loss show reduced ability to use spatial filtering, particularly in informational masking.
  • The VGHA improved auditory spatial attention in speech-on-speech masking and signal-to-noise ratio in energetic masking.

Conclusions:

  • Acoustic beamforming, as implemented by the VGHA, can benefit both normal-hearing and hearing-impaired listeners, especially in less reverberant conditions.
  • Eye-gaze guidance of the beamformer enhances sound source selection and aids in tracking changing sound sources during conversations.