Chapter 3: Sound Transmission and Sound Propagation

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Chapter 3 Sound Transmissionand Sound
Propagation
This Power Point Presentation is to accompany the
textbook FUNDAMENTALS OF HEARING AN
INTRODUCTION (5th Edition) Published by Elsevier
Press and authored by William A. Yost. Please
consult the Power Point Instructions at this Web
Site before using this Presentation.
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Condensation Pulse
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Rarefaction Pulse
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Oscillating Source
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Oscillating Source-Lower Frequency
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Oscillating Source-Different Frequencies
Higher Frequency
Lower Frequency
Wavelength
(?)
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Pressure Changing Over Time
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Decibels
Referent
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Inverse Square Law
Source
8 meters -18 dB
4 meters -12 dB
2 meters - 6 dB
16 meters -24 dB
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Interference
Wave Reflecting from Large Object
Wave Reflecting from Large Object, with
Reinforcement and Cancellation
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Interference-Sound Shadow
Medium Size Object Sound Shadow
Small Size Object
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Reverberation
Reverberation
No Reverberation
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Standing Waves
Reflection
Source
antinode
antinode
antinode
antinode
antinode
antinode
node
node
node
node