Objectives Demonstrate knowledge of the nature of sound waves and the properties sound shares with other waves. Solve problems relating frequency, wavelength, and velocity of sound. Relate the physical properties of sound waves to the way we perceive sound. Define the Doppler shift and identify some of its applications.

Chapter 15 Sound

Sec. 1 Properties of Sound Sound Waves –Describing sound –Loudness The decibel scale –Pitch

The Doppler Shift

Sec. 2 The Physics of Music Sources of Sound Resonance in Air Columns –Standing pressure waves –Resonance lengths –Resonance frequencies in a closed pipe –Resonance frequencies in an open pipe –Hearing resonance

Detection of Pressure Waves Sound Quality –The sound spectrum: Fundamental and harmonics. –Sounds good? Consonance and dissonance. –Musical intervals Beat Notes Sound Reproduction and Noise