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A primer on acoustics

Watch this informative primer on acoustics by John Calder of Acoustic Geometry and learn how and why rooms can become very loud very quickly.

WSJ Article Doesn’t Explain Community Distress

WSJ Article Doesn’t Explain Community Distress

In her "Numbers" column in last month's Wall Street Journal, writer Jo Craven McGinty provides a concise set of facts on pollution generated by gas-powered leaf blowers (That Ear-Splitting Leaf Blower? It Also Emits More Pollution than a Car, Dec 15, 2017; Page A2)....

Wishing You All A Peaceful New Year

Wishing You All A Peaceful New Year

From The Quiet Coalition Humans and our animal ancestors before us evolved in quiet, as shown by this noise map prepared by the U.S. National Park Service. Average sound levels range from 20 to 40 A-weighted decibels at most. (A-weighting reflects sounds as heard by...