PSYB51H3 Study Guide - Comprehensive Final Guide: Vocal Tract, Habituation, Soltyrei

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1 Dec 2016
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Vi(cid:271)ratio(cid:374) of the o(cid:271)je(cid:272)t (cid:272)auses (cid:373)ole(cid:272)ules i(cid:374) the o(cid:271)je(cid:272)t"s surrou(cid:374)di(cid:374)g (cid:373)ediu(cid:373) to (cid:448)i(cid:271)rate as (cid:449)ell, which causes pressure changes in the medium. The pressure changes are longitudinal in direction. Speed of sound depends on the density of the medium: air ~ 340m/s, water ~ 1500m/s. Amplitude (loudness) magnitude of displacement of a sound pressure wave. Loudness the psychological aspect of sound related to perceived intensity or magnitude. Intensity amount of sound energy falling on a unit area. Measured in decibels sound pressure level (db spl) Decibels ratio between the pressure of some sound and the pressure of a reference sound (p0) Frequency for sound, the number of times per second that a pattern if pressure repeats. Pitch psychological aspect of sound related to the fundamental frequency. Humans can hear across a wide range of sound intensities. Ratio between faintest and loudest sounds is more than 1:1,000,000. Human hearing uses a limited range of frequencies: 20-20,000 hz.

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