CSD-2464 Lecture Notes - Lecture 2: Simple Harmonic Motion, Tuning Fork, Sine Wave

• School: App State
• Department: Communication Sciences and Disorders
• Course: CSD-2464
• Professor: Jennifer Dalton

Document Summary

Acoustics: the study of sound: sound: Is a disturbance in a medium (like air) Produces a wave that travels through space. The wave can be simple or complex. Simple: one frequency only: a pure tone. Complex: multiple frequencies: all other sounds, including speech. Understanding simple waves provides a foundation for describing. Simple harmonic motion complex sounds: pure tones result from simple harmonic motion (shm, characteristics of shm. The patter(cid:374) of vi(cid:271)ratio(cid:374) repeats itself (cid:894)it"s periodi(cid:272)(cid:895) Each cycle takes the same amount of time (the period is constant) The graphic representation is a sine wave. Tuning forks and pendulums (including swings) move in shm. One cycle of shm in tuning fork. Initial impact starts movement (displacement) away from rest: elasticity in the fork allows displacement, but also generates a restoring force (rf) that stops the movement, the rf returns the fork back to rest position.