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Related Concept Videos

Auditory Perception01:17

Auditory Perception

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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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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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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.
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Virtual reality head-mounted displays affect sidetone perception.

Greta Öhlund Wistbacka1, Weihan Shen1, Jonas Brunskog1

  • 1Acoustic Technology, Department of Electrical and Photonics Engineering, Technical University of Denmark, Kongens Lyngby DK-2800, Denmark gmawi@elektro.dtu.dk, s212644@dtu.dk, jbr@elektro.dtu.dk.

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Summary
This summary is machine-generated.

Head-mounted displays (HMDs) alter auditory sidetone perception. Spectral analysis revealed HMDs reduce sidetone energy, and most listeners could perceive this change.

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Area of Science:

  • Audiology
  • Human-Computer Interaction
  • Acoustics

Background:

  • Sidetone, the sound of one's own voice heard via a microphone and speaker, is crucial for voice production.
  • Head-mounted displays (HMDs) are increasingly common in virtual reality and augmented reality applications.
  • The acoustic impact of HMDs on sidetone perception is not well understood.

Purpose of the Study:

  • To determine if wearing head-mounted displays (HMDs) perceptibly alters the auditory sidetone.
  • To quantify the acoustic changes in sidetone introduced by HMDs.

Main Methods:

  • Impulse responses (IRs) were measured with (IRtest) and without (IRref) a HMD using a dummy head.
  • Spectral analysis was performed on the recorded IRs.
  • Ten naive listeners discriminated between speech signals convolved with IRtest and IRref.

Main Results:

  • Spectral analysis indicated that HMDs reduced sidetone energy in the 2000-4500 Hz range.
  • A majority of the tested listeners could distinguish between the sidetone with and without the HMD.

Conclusions:

  • Head-mounted displays (HMDs) introduce a discernible alteration to auditory sidetone.
  • The perceived changes in sidetone due to HMDs are significant enough for listeners to detect.