[soundguy]

i work around hundreds of thousands of dollars of pro audio gear for work purposes.. including real time anylizers, reference quality mics and nois gens and signal db meters with graphing and computer store capability.

it's no big deal. you can't use a 30$ analog swinging needle job, or the app on an iphone.. but there are plenty of ways to do it right.. especially with a meter tha has different weightings and speed sampling rates.