ABSTRACT
Time Weighting CHAPTER OUTLINE Linear Averaging........................................................................................................................ 57 Exponential Averaging.............................................................................................................58 Impulse ..........................................................................................................................................58 Peak ...............................................................................................................................................59 The Time Factor in Program Level Meters ....................................................................59 Equivalent Level, Leq .............................................................................................................. 60
Most instruments that display levels create the value displayed through an RMS
averaging of the signal over time. In practice, two different methods are used to
create the averaged signal, namely linear and exponential averaging. The term
time weighting refers to the time window that is used for the creation of the
value displayed.
