PSY280H1 Chapter Notes - Chapter 9: Psychoacoustics, Semicircular Canals, Fundamental Frequency
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PSY280H1 Full Course Notes
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Nature of sound, anatomy and physiology of the auditory system, and how we perceive the two fundamental sound qualities: loudness and pitch. Sound waves travel at particular speed depending on the medium. First harmonic is called fundamental frequency: the lowest-frequency component of a complex periodic sound. All other harmonics are at integer multiples of the harmonic fundamental. Properties of sound sources determine the spectral shapes of sounds can be used to identify sound source: faster through denser mediums, through water: 1500m/s. Basic qualities of sound waves: frequency and amplitude. Amplitude (intensity): the magnitude of displacement (increase or. Low frequency corresponds to low pitch, high frequency corresponds to. Different animals and humans at different ages perceive different: sound levels measured on a log scale using decibels (db): define the difference between two sounds as the ratio between two sound pressures. Each 10:1 sound pressure ration = 20db, and 100:1 ratio = 40db db=20log ( p p0.
