MARKET 1 Lecture Notes - Lecture 10: Tuning Fork, Porthole, Cerebral Cortex
Document Summary
What is sound: when a tuning fork is tapped, it creates a physical stimulus, sound waves are changes in air pressure caused by vibrating air molecules. The energy of the sound waves decreases with the distance from the source: however, no sound is perceived unless someone is there to convert the sound waves into electrical signals. Frequency and amplitude: sound waves have 2 basic features, frequency (pitch), amplitude (loudness), the rate at which air molecules vibrate is known as frequency. Only works for waves which travel at constant speeds. In normal conditions sound waves travel at constant 343 m/s. The complexity of sound: most sounds are a mixture of frequencies the particular mixture determines the sound"s complexity. Language and music differ from other auditory inputs, because they convey meaning. Our auditory system is better at processing speech and music when compared to other sounds: auditory attention also allows us our auditory system to tune in .
