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Related Concept Videos

Perceiving Loudness, Pitch, and Location01:21

Perceiving Loudness, Pitch, and Location

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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.
Place theory, or place coding, suggests that different pitches are heard because various sound waves activate specific locations along the cochlea's basilar membrane. The brain determines the pitch of a sound by...
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Perception of Sound Waves01:01

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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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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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Hearing01:31

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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Beats01:09

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The study of music provides many examples of the superposition of waves and the constructive and destructive interference that occurs. Very few examples of music being performed consist of a single source playing a single frequency for an extended period of time. A single frequency of sound for an extended period might be monotonous to the point of irritation, similar to the unwanted drone of an aircraft engine or a loud fan. Music is pleasant and exciting due to mixing the changing frequencies...
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The Cochlea01:13

The Cochlea

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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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A Lightweight, Headphones-based System for Manipulating Auditory Feedback in Songbirds
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Animal Pitch Perception: Melodies and Harmonies.

Marisa Hoeschele1

  • 1Department of Cognitive Biology, University of Vienna, Vienna, Austria.

Comparative Cognition & Behavior Reviews
|June 27, 2017
PubMed
Summary

Human pitch perception involves pitch height, chroma, and relative pitch, principles also used by other species. Comparing animal and human pitch abilities offers insights into acoustic signal processing in a biological context.

Area of Science:

  • Auditory neuroscience
  • Bioacoustics
  • Psychoacoustics

Background:

  • Pitch perception is a fundamental aspect of auditory processing, intricately linked to the fundamental frequency of sound.
  • While separable from attributes like timbre, pitch perception is complex and context-dependent.
  • Understanding pitch processing in humans provides a baseline for comparative studies across species.

Purpose of the Study:

  • To explore the multifaceted nature of human pitch perception.
  • To investigate the extent to which other animal species utilize similar principles in pitch processing.
  • To contextualize human auditory abilities within a broader biological framework.

Main Methods:

  • Analysis of psychoacoustic principles governing human pitch perception, including pitch height, pitch chroma, relative pitch, and grouping.
Keywords:
acousticsmusicperceptionpitch

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  • Comparative review of pitch processing mechanisms across diverse animal species.
  • Examination of contextual influences on pitch perception in both humans and animals.

    • Main Results:

    • Human pitch perception is characterized by an assessment of pitch height, pitch chroma, relative pitch, and grouping principles.
    • Evidence suggests that many of these pitch processing principles are conserved across species.
    • Significant variation exists in the application and accuracy of these principles among different species and contexts.

    Conclusions:

    • Pitch perception is a complex auditory faculty with conserved elements across the animal kingdom.
    • Comparative studies of pitch processing reveal insights into the evolution and biological underpinnings of acoustic signal interpretation.
    • Further research comparing human and animal pitch abilities is crucial for a comprehensive understanding of auditory cognition.