PSYCH 1XX3 Lecture Notes - Lecture 8: Basilar Membrane, Sound, Logarithmic Scale
4 Apr 2018
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Psych 1xx3 audition notes mar 18, 2010. Auditory system translates sound waves from vibrating objects into the psychological experience of audition. Auditory mechanisms of different species: auditory mechanisms vary across different species according to specific needs. The dog whistle produces a sound at a high frequency that is beyond the range of human ears but well within the range of the dog"s auditory system. Sound frequency perception in vertebrates: humans can perceive sounds that lie anywhere between 20 and 20,000 hz, a respectable auditory range. The basilar membrane: the basilar membrane varies in length across species; it is shortest in amphibians and reptiles, longer in birds, and longest in mammals, a longer basilar membrane allows processing of a wider range of frequencies. And so, mammals can discriminate the widest range of frequencies while most other species cannot discriminate frequencies over 10000 hz. Faint or loud sound => intensity of sound (how loud sound).
