Chapter | eight
Time Weighting
CHAPTER OUTLINE
The Time Factor in Program Level Meters
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.
LINEAR AVERAGING
With linear (time) averaging, an average level is created as a simple RMS value of the signal within a given period of time, for example 2 seconds. The weighting for linear averaging is shown in Figure 8.1.
On instruments that are used ...
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