Fortunately, as long as the ordinance is reasonable, it isn't all that hard to do. The most common maximum noise level agreed upon is 95 to 100 decibels at 100 feet. For a V-8 race car, that isn't ...

Designing acoustic filters that can block out a certain sound or produce a certain pitch can be hit or miss, but researchers have discovered a way to predict acoustic qualities 70,000 times faster ...