COOL PROJECTS WHITE PAPER Number: 001 Date: October 31, 2018 Title: Engineering a Quiet Leafblower Result: 8 dBA reduction, rivaling best in class Application Function Stage Methods…
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dB(A) has come to be viewed as a convenient single number description of noise emission. That definition is overly optimistic and may lead to unpleasant surprises. History In the 1930s…