NC stands for “noise criteria,” and each of the single number NC values actually refer to a curve of specific sound pressure levels plotted against octave band frequency for eight different octave ...

State officials have told Village Board members that estimated noise levels that would be produced by a proposed electrical generating plant at the Mallard Lake landfill were low and within state g… ...

This report summarises the criteria at present used to guide the design of studios with respect to background noise and sound insulation. Many of these criteria have been difficult to determine by ...