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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...

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.

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...

Auditory Pathway

Auditory Pathway

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.
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking the...

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 cochlea, a...

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

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Ultrasound Images of the Tongue: A Tutorial for Assessment and Remediation of Speech Sound Errors

Ultrasound Images of the Tongue: A Tutorial for Assessment and Remediation of Speech Sound Errors

Published on: January 3, 2017

English Language Teaching: phonetics, phonology and auditory processing contributions.

Letícia Maria Martins Araújo¹, Mariza Ribeiro Feniman, Fernanda Ribeiro Pinto de Carvalho

¹Instituto de Comunicação e Audição (ICA), Bauru, SP, Brazil. le_mma@yahoo.com.br

Pro-Fono : Revista De Atualizacao Cientifica

|November 25, 2010

Summary

Prior English phonetics knowledge did not improve general second language learning for Portuguese speakers. However, it did enhance temporal processing skills in a specific auditory test.

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Area of Science:

Linguistics
Second Language Acquisition
Auditory Processing

Background:

Investigating the connection between phonetics, phonology, and auditory processing in English Language Teaching.
Examining the impact of early English phonetic exposure on second language (L2) acquisition.

Purpose of the Study:

To ascertain if prior English phonetics instruction benefits overall L2 learning in Portuguese speakers.
To evaluate auditory processing performance before and after L2 instruction.

Main Methods:

Eight college students with prior high school English study were divided into control (English classes) and experimental (phonetics then English classes) groups.
Both groups underwent auditory processing and English oral tests pre- and post-instruction.
Statistical analysis using T-Student's test was performed on pre- and post-class data.

Main Results:

No significant difference in overall L2 learning performance between groups.
The control group showed better performance on the English oral test.
The experimental group demonstrated improved auditory processing test scores post-instruction.

Conclusions:

Basic English phonetic knowledge did not enhance general second language acquisition, specifically pronunciation.
Prior exposure to English phonetics improved temporal processing abilities as measured by the auditory test.