Silencer Theory
silencers
non-mathematical explanation of the reduction or suppression of sound from gas producing devices such as firearms, internal combustion engines, compressors, air-powered tools, and industrial exhausts. Well-illustrated with many examples.
Silencer Theory (Revised, 2000) by Henry C. Landa, et al
Table of Contents
Introduction
What is Sound?
Compressions and Rarefactions
Explosions, Reports, and Exhausts
Sound Reduction
Point of Origin of Sound
How Sound Is Transmitted
How Sound Travels Through the Air
Sound Absorption and Reflection of Materials
Sound Absorption of Various Materials
Typical Silencer Designs
Straight-Through Expansion Box
Absorptive Silencers
Resonating Chamber Not in the Gas Path
Constriction in Flow path
Interference Filter
Firearm Silencing
Expanding and Absorbing the Gas Impulses
Lowering the Rate of Release
Rate of Release (of Gas) vs. Time [Charts]
Practical Matters
The Firearm Silencer and the Law
Index
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