PSYC 2220 Lecture Notes - Lecture 5: Timpani, Thalamus, Hair Cell
19 Dec 2017
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Document Summary
Frequency produces pitch, where the lower frequencies produce lower pitch. Pure tone: basic sinusoidal sound wave, where other sounds are made up of combinations of pure tones. Frequency of waves increases as a noise is apporaching you and vice versa of the noise is moving away from you (doppler effect) Fundamental frequency: lowest frequency element of a set of tones. Overtones: higher frequency elements of a sound (everything other than the ndamental frequency) Harmonic- overtone with a whole integar multiple of the fundamental frequency. Partials- overtones which are no harmonics (aka. non-harmonics) Frequency spectrum- tones that make up a sound and are responsible for a sound"s timber. Timber- the shape of the frequency spectrum across time: attack (build up of sound) and decay (decrease in sound at the end of tone, the shape of the sound across time, frquency, and amplitude. Periodic sound: patterns that repeat across time. Aperiodic sound: sounds that have no repeating atterns (aka. noise)
