Nicole Kidman and Keith Urban have a new baby, courtesy of a surrogate ... TMZ has learned. Sources tell us ... the baby was born at Centennial Medical Center in Nashville on December 28, 2010.
Quick Answer. When talking about dishwashers, decibels refers to the noise level a dishwasher produces when it is in operation. The quietest dishwashers have decibel ratings around 40 and slightly below, while the noise level in decibels of a normal conversation is about 60.
The A-Weighted Sound Level is a single number measure of the relative loudness of noise that is used extensively in outdoor environmental noise standards. The ratings correlate well with human judgments of relative loudness, but do not take into account the spectral balance or sound quality.