PSYC 212 Lecture Notes - Lecture 9: Fluid Mechanics, Low Frequency, Basilar Membrane
21 Apr 2016
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Document Summary
What does sound look like: an envelope of air pressure fluctuating in free space around us. It is emitting in multiple directions (the image is in one directions: basic concepts of waves, frequency: how many times a second something happens (cycles/second = hz) A what point in time do you start your cycle. 0. 5 hz, so a bit higher: using this spectrum plot, we can say how many frequencies are in the sound that we have measured. Right 3 different frequency components combined: advantage: it will tell you the frequency and the relative amplitude of the sound. When we look at the peeks and notice a height difference, we can see that the taller peak had an amplitude twice taller than the smaller one. Frequency representation: a wave of 220hz is a line double the frequency doubled doubled etc, x-axis: frequency (hz, y-axis: amplitude.
