PSY100H1 Study Guide - Vocal Tract, Acoustic Phonetics, Vocal Folds
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PSY100H1 Full Course Notes
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Document Summary
Sounds from musical instruments and human vocal tracts obey same laws of physical acoustics as all other sounds. Pythagoras from pythagorean theorem in high school geometry convinced that musical intervals they found most pleasing should provide greatest insights to universe as whole. When listeners hear pleasant sounding chords preceding a word, faster to respond with word like charm is positive and slower to respond that world like evil is negative. High levels of neurotransmitter serotonin are responsible for negative aspects of emotion and mood. Pitch: psychological aspect of sound related mainly to fundamental frequency. Octave: interval between 2 sound frequencies having ration of 2:1. When 1 of 2 periodic sounds is double frequency of other, 2 sounds are one octave apart. In typical western music, frequencies of notes are adjusted slightly from simple ratios so that combos of notes will sound equally good when played in higher or lower frequency ranges (keys)
