Transcript Chapter 15

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