2 February 2015

Hearing things

The cochlea is a biological system that effectively decomposes a sound into its constituent frequency components. It converts instantaneous changes in air pressure into components that stimulate the hair-like filaments along the inner ear’s basilar membrane, which aids in translating sound vibrations into electrical signals. The activated filaments produce electrochemical signals that are transmitted to the auditory cortex. The individual components of an individual sound are re-integrated and perceived as a singular event—in part by nature of their harmonicity (that is, their constituent components are related in integer ratios), and, in part, by their temporal synchronicity, which integrates many components into a perceived individual event.
from Jonathan Berger on the necessity of musical hallucinations

Image from here

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