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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...
Perception of Sound Waves01:01

Perception of Sound Waves

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 frequency...
Perceiving Loudness, Pitch, and Location01:21

Perceiving Loudness, Pitch, and Location

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 identifying...
Bandpass Sampling01:17

Bandpass Sampling

In signal processing, bandpass sampling is an effective technique for sampling signals that have most of their energy concentrated within a narrow frequency band. This type of signal is known as a bandpass signal. The key principle of bandpass sampling involves sampling the signal at a rate that is greater than twice the signal's bandwidth to prevent aliasing.
A bandpass signal has a spectrum with a lower frequency limit, denoted as ω1, and an upper frequency limit, denoted as ω2. The spectrum...
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...
Perception01:28

Perception

Perception is a fundamental psychological process that enables individuals to organize, interpret, and consciously experience sensory information. This process is crucial for understanding and interacting with the world around us. It includes both bottom-up and top-down processing, each playing a distinct role in how we perceive our environment.
Bottom-up processing begins at the sensory level, where receptors detect external environmental stimuli. These could include the tactile sensation of...

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Related Experiment Video

Updated: May 11, 2026

A Method to Study Adaptation to Left-Right Reversed Audition
07:14

A Method to Study Adaptation to Left-Right Reversed Audition

Published on: October 29, 2018

Wideband monaural envelope correlation perception.

Joseph W Hall1, Emily Buss, John H Grose

  • 1Department of Otolaryngology/Head and Neck Surgery, University of North Carolina School of Medicine, Chapel Hill, NC 27599, USA. jwh@med.unc.edu

Advances in Experimental Medicine and Biology
|May 30, 2013
PubMed
Summary
This summary is machine-generated.

This study explored how well people perceive correlated noise envelopes across different bandwidths. Optimal perception occurred between 200-800 Hz, suggesting central processing influences auditory perception.

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Memorization-Based Training and Testing Paradigm for Robust Vocal Identity Recognition in Expressive Speech Using Event-Related Potentials Analysis
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Related Experiment Videos

Last Updated: May 11, 2026

A Method to Study Adaptation to Left-Right Reversed Audition
07:14

A Method to Study Adaptation to Left-Right Reversed Audition

Published on: October 29, 2018

Memorization-Based Training and Testing Paradigm for Robust Vocal Identity Recognition in Expressive Speech Using Event-Related Potentials Analysis
05:48

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Published on: August 9, 2024

Area of Science:

  • Auditory Neuroscience
  • Psychoacoustics

Background:

  • Monaural envelope correlation is crucial for auditory perception.
  • Understanding how noise bandwidth affects this perception is key to auditory modeling.

Purpose of the Study:

  • To investigate monaural envelope correlation perception across various noise bandwidths.
  • To compare performance for identical versus reflected-spectrum noise bands.
  • To evaluate auditory processing models based on peripheral versus central filtering.

Main Methods:

  • Six normal-hearing listeners participated in the study.
  • Noise bandwidths ranged from 25 to 1,600 Hz, with fixed frequency band edges.
  • Listeners performed tasks involving identical and reflected-spectrum comodulated noise bands.

Main Results:

  • Listener performance was similar for identical and reflected-spectrum conditions.
  • Best performance in envelope correlation perception was observed for bandwidths between 200 and 800 Hz.
  • Results suggest nonoptimal weighting of peripheral filter outputs contributes to perception.

Conclusions:

  • Auditory perception of monaural envelope correlation is bandwidth-dependent.
  • Existing models based solely on peripheral filtering may not fully explain the results.
  • Central processing and weighting of peripheral filter outputs play a significant role in auditory perception.