Video Experimental Relacionado
Updated: Sep 9, 2025
14:05
Behavioral Assessment of Hearing in 2 to 4 Year-old Children: A Two-interval, Observer-based Procedure Using Conditioned Play-based Responses
Published on: January 23, 2017
29.2K
¿Puede la representación espectral del sistema auditivo periférico explicar los cambios en la producción de vocales
Yasufumi Uezu1, Masato Akagi1, Masashi Unoki1
1Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan.
The Journal of the Acoustical Society of America
|September 3, 2025
Resumen
Las representaciones espectrales auditivas explican cómo el ruido afecta la producción de vocales al revelar efectos de enmascaramiento. Estos efectos desencadenan ajustes compensatorios del habla, apoyando los modelos de control auditivo-motor.
Área de la Ciencia:
- Producción del habla
- Percepción auditiva
- Fonética acústica
Sus antecedentes:
- La producción de vocales se ve afectada por el ruido de fondo, especialmente cuando los formantes inferiores están enmascarados.
- Comprender el papel del sistema auditivo en la producción del habla en condiciones adversas es crucial.
Objetivo del estudio:
- Investigar cómo las representaciones espectrales auditivas explican los cambios en la producción de vocales en diversas condiciones ruidosas.
- Determinar la influencia del enmascaramiento auditivo en las frecuencias formantes y la intensidad vocal.
Principales métodos:
- Diez hablantes japoneses adultos masculinos produjeron vocales sostenidas / a / y / i / en entornos silenciosos y ruidosos.
- Las condiciones de ruido incluían ruido de banda ancha, de paso bajo y de paso alto a 75 y 85 dB.
- Se analizaron la intensidad vocal, las amplitudes / frecuencias formantes y las representaciones espectrales auditivas (utilizando un modelo de ruido).
Principales resultados:
- Las condiciones ruidosas generalmente aumentan la intensidad vocal y las amplitudes formantes.
- La frecuencia del primer formante (F1) se desplaza hacia arriba con el ruido de banda ancha; el segundo formante (F2) varía según la vocal y el tipo de ruido.
- Los efectos de enmascaramiento específicos de la frecuencia, indicados por patrones de excitación auditiva superpuestos, explican mejor los cambios de producción que los espectros de potencia solos.
Conclusiones:
- El enmascaramiento auditivo influye significativamente en la producción del habla al alterar las frecuencias y la intensidad formantes.
- Estos hallazgos apoyan los modelos de control auditivo-motor basados en la percepción en entornos ruidosos.
- Las representaciones espectrales auditivas proporcionan información sobre los mecanismos subyacentes a los ajustes del habla al ruido.
Videos de Conceptos Relacionados
01:21Perceiving Loudness, Pitch, and Location
420
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...
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...
420
01:17Auditory Perception
580
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...
580
01:01Perception of Sound Waves
4.6K
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...
The pitch of a sound depends on the frequency and the pressure amplitude of the source. Two sounds of the same...
4.6K
01:13The Cochlea
45.8K
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.
45.8K
01:31Hearing
53.0K
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.
53.0K
01:15Auditory Pathway
5.8K
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...
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking...
5.8K