SPA 4302 Lecture Notes - Lecture 1: Sound Localization, Interaural Time Difference, Psychoacoustics

• School: University of Florida
• Department: Speech Pathology & Audiology
• Course: SPA 4302
• Professor: Brittany N Hensley

Document Summary

Loudness and the threshold of audibility curve: human ear can hear 20-20,000 hz, lowest level most people can hear is 0 db hl at each frequency, auditory threshold changes with frequency, yellow line: threshold of audibility curve. Pitch (not on exam: psychological correlate of frequency, dou(cid:271)ling of f(cid:396)e(cid:395)uen(cid:272)y doesn"t di(cid:396)e(cid:272)tly dou(cid:271)le the pe(cid:396)(cid:272)eived pit(cid:272)h, pitch varies with intensity. Increasing intensity results in increased pitch for high frequencies. Increasing intensity results in decreased pitch for low frequencies. If a sound is very short (less than 200 ms) it needs to be louder to be audible: describes how the threshold of audibility for a sound changes with the duration of a sound. If a sound is shorter than 10 ms it will be perceived as a click rather than its tone, becomes a complex sound: forms some of the research behind the technique for testing hearing thresholds. Interaural intensity differences: difference in intensity between the two ears.