PSYCH 1XX3 Lecture Notes - Lecture 5: Eardrum, Middle Ear, Low Frequency
6 Jun 2016
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Q: the eater prays on the victim species by the victims sounds. A: a victims evolve mating calls outside the audible frequency range of eaters, eaters adapt by evolving a large audible frequency range. Audition focuses on frequency, frequency and wavelength are the inverse. Sound travels by particles pushing against each other, a single particle travels until it hits another. A sound cannot travel in a vacuum. Sound as a speaker: the sound is moving back and forth, creating series of compression and refraction. Sound is not linear; it moves outward from a source. (ex: a pebble in a pond) Measure in decibels, every 10 points it goes up the sound goes up. A hockey game is 132 decibels (close to the danger range) 4 decibels is the lowest sound, which is a mosquito. Timbre complexity of purity of a sound. We do not normally hear pure tones. All sounds combine to form a soundwave.
