SLHS 21500 Lecture Notes - Lecture 1: Tuning Fork, Sine Wave, Vocal Folds

• School: Purdue University
• Department: Speech, Lang & Hear Science
• Course: SLHS 21500
• Professor: Krishnan Preethi

Document Summary

Sine wave (waveform: elasticity, propagation, vibration, amplitude. Form of energy caused by vibration: always produced by moving objects, what happens to the tuning fork, squeeze prongs together and release, prong is displaced inwards, recoil (elasticity) forces them back towards rest position. They move outwards due to the speed, they pass the rest position: recoil (elasticity) forces them back towards rest position, continues until friction causes it to stop, vibrating tuning fork. If there were no friction the vibration would go on inde nitely without stopping. The vibrations are too small for you to see, but this illustrates how the prongs of the tuning fork move. Tuning fork strain: property of a substance to change its length, volume, or shape in direct response to a force. And to recover its original form upon the removal of a force: resonance: a resonant frequency is the natural frequency of vibration of an object. Tuning fork pushes air molecules also water, solids)