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For most of human existence, listening was closely tied to moments that carried meaning, emotion, or survival.

So far we have only considered sound in isolation and we have seen that sound has velocity, frequency, wavelength and reduces in intensity in proportion to the square of the distance from the source.

No, I am not sitting in my home theater at 6:00 a.m., ruminating about how the pattern on the wall from the lighting sconce looks different from the back row. This article is about sound reflections.

According to the Occupational Safety and Health Administration, 22 million people—including nearly all power plant workers—are exposed to potentially damaging noise at work each year in the U.S.