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Hearing Science

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Submitted By dbenal
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ACOUSTICS- physical sound is series of disturbances within and propagated through an elastic medium, such as air.”
Sound- vibrations, must involve time and pressure. Force over and extended area: P=F/A

PSYCHACOUSTICS- - the act of hearing something, how we might use adjectives to describe a sound.
FREQUENCY- number of complete cycles per second.

PITCH- the quality of a sound governed by the rate of vibrations producing it; the degree of highness or lowness of a tone.

LOUDNESS/VOLUME Loudness- the characteristic of a sound "that attribute of auditory sensation in terms of which sounds can be ordered on a scale extending from quiet to loud" (amplitude). Volume- is the perception of loudness from the intensity of a sound wave. The higher the intensity of a sound, the louder it is perceived in our ears, and the higher volume it has.
AMPLITUDE/INTENSITY Intensity - the measurable amount of a property, such as force, brightness, or a magnetic field. Amplitude- the maximum extent of a vibration or oscillation, measured from the position of equilibrium.
OUTER/MIDDLE/INNER EAROuter Outer Ear- Outer ear collects sound. Sound travels through Oracle and auditory canal a short tube that ends at eardrum. Sound then travels to the middle ear and causes eardrum and ossicles in the middle ear to vibrate. as it travels it amplifies and changes from air to a liquid. The inner year when stape moves it pushes the oral window and moves to the cochlea, then cochlea takes fluid vibrations of the sounds and translates them into signals that are sent to the brain through cranial nerves seven and eight. * “Ear Lobe” * Ear canal
Middle Ear * Tympanic Membrane * Ossicles (Malleus/Incus/Stapes)
Inner Ear * Cochlea * Vestibule * Semicircular Canals * Vestibulocochlear nerve (CNVIII)

PERIPHERAL vs. CENTRAL * Central Nervous System (CNS)-brain

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