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Auditory Perception

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...

Perceiving Loudness, Pitch, and Location

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...

Perception of Sound Waves

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...

Factors Affecting Perception

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...

Hearing

Hearing

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.

The Cochlea

The Cochlea

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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Related Experiment Video

Updated: Jun 2, 2026

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

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

Published on: August 9, 2024

Speaker age and vowel perception.

¹University of Hawai'i at Mānoa, Department of Linguistics, 561 Moore Hall, Honolulu, Hawai'i 96822, USA. katie.drager@hawaii.edu

Language and Speech

|April 29, 2011

Summary

Speaker age perception influences vowel categorization, but only for older listeners. Social cues in speech affect perception differently based on how salient they are, impacting sociophonetic trends.

Area of Science:

Sociolinguistics
Phonetics
Psychology

Background:

Speech perception is influenced by social characteristics attributed to speakers.
Generational differences in speech can lead to distinct phonetic variants.

Purpose of the Study:

To investigate how perceived speaker age affects vowel perception in a chain shift.
To determine if social characteristics influence speech perception based on variant salience.

Main Methods:

A speech perception experiment was conducted.
Participants categorized vowels produced by speakers of different perceived ages.
An exemplar model of speech perception was used for analysis.

Main Results:

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Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages

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Last Updated: Jun 2, 2026

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

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Perceived speaker age influenced vowel categorization as predicted.

This influence was significant only for older participants.

An unexpected interaction was found between participant sex and stimulus sex.

Conclusions:

The salience of the relationship between phonetic variants and social characteristics impacts speech perception.
Listener age and prior exposure to different speakers modulate the influence of social information in speech perception.
Social information is indexed to acoustic information in speech perception, with variable weighting based on salience.