MUS 210 Chapter 1: MUSIC TECH: Chapter 1
Document Summary
Sound waves are generated when air molecules are pushed together, allowed to spring apart, and then pushed together again in a repeating pattern. Crowded party: you push someone, they push the person next to them, etc . You stay put, but the bump moves across the room. To generate sound, you need a device that causes molecules to push together and spring apart (instruments) Compression- the region of air where the molecules have been pushed together. The compressed air molecules then spring apart, cause a compression further on. The energy imparted to the molecules by the string propagates- moves through the air. String moving forward causes compression, string moving backward causes rarefaction. Rarefaction- the forward motion of the string has cleared out the molecules in front of the string, leaving an area with fewer molecules than before, the opposite of compression.
