ABSTRACT
In this chapter, the reader is introduced to:
fundamentals and basic terminology of noise control;
noise-control strategies for new and existing facilities;
the most effective noise-control solutions;
the wave equation;
plane and spherical waves;
sound intensity;
units of measurements;
concepts of sound pressure, intensity and power level;
frequency analysis and sound spectra;
adding and subtracting sound levels;
three kinds of impedance; and
flow resistance.
