MCELLBI C61 Lecture Notes - Lecture 19: Bony Labyrinth, Semicircular Canals, Oval Window
17 May 2020
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Document Summary
Sound means two di erent things: perceptual experience of hearing; the quality we have within our conscious mind, physical property of what"s produced in the physical, external world. Waves of changes in density (pressure) of air molecules = sound waves. In the case of a bell, the striking of its metal produces on a vibration of of the metal and a resulting wave of compression (increased density) and rarefaction (decreased density) Timbre: a result of complex waveforms composed of a combination of frequencies e. g. middle c on the piano is not a pure tone. It has complexities based on vibrations of the piano. The same note sounds di erent in di erent instruments. Fourier analysis gives component frequencies of complex vibrations. Highest bar @ 256 hz is followed by smaller bars (overtones) Jew"s harp produces a complex vibration w component frequencies that can be plotted.
