Lecture 10 Audition Slides F09

Lecture 10 Audition Slides F09 - Lecture 10 Audition, the...

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Unformatted text preview: Lecture 10 Audition, the Body Senses and the Chemical Senses Sound Sound is produced by objects that vibrate and set molecules of air into motion; these vibrations are perceived as sounds. Sound travels approximately 700 miles per hour. Humans hear vibrations between 30 and 20,000 cycles per second. Qualities of Sound Pitch: A perceptual dimension of sound; corresponds to the fundamental frequency of the stimulus. Hertz: Measure of frequency in cycles per second. Loudness: A perceptual dimension of sound; corresponds to the intensity of the stimulus. Timbre: A perceptual dimension of sound; corresponds to the complexity of the stimulus. Qualities of Sound Fourier Analysis: The mathematical process by which a complex wave is decomposed into basic sine wave elements. Anatomy of the Ear Pinna: The external ear that we can see; collects sound from the environment. Tympanic membrane: The eardrum; vibrates when stimulated by sound waves. Ossicles: The bones of the middle ear. Malleus: The hammer, the first of the three ossicles; attached to the tympanic membrane. Incus: The anvil; located between the malleus and the stapes. Stapes: The stirrup, the third ossicle; attached to the oval window of the cochlea. Anatomy of the Ear Cochlea: The snail-shaped, fluid-filled, structure of the inner ear; contains the basilar membrane and the auditory receptor hair cells....
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This note was uploaded on 02/26/2011 for the course PSYC 301 taught by Professor Yager during the Spring '10 term at Maryland.

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Lecture 10 Audition Slides F09 - Lecture 10 Audition, the...

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