Control of Noise Source by Redress

The best way to solve noise problems is with good design of the source. However, frequently an existing source is a noise problem either because of age, abuse, or poor design. Then the problem must be redressed or corrected as it exists. The following sections identify measures for redressing or correcting the source.

FIG. 6.6.8 Techniques to reduce the generation of airborne and structure-borne noise in machines. (Adapted from U.S. Department of Commerce)
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