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Time Weighted Average

Description#

The signal processing block Average can either calculate the linear or exponential average of an input. It is based on IEC 61672-1:2013 which specifies sound level meters and defines the time-weighted sound level.

MxNKxN

Input#

The input is MxN and must be a time signal with the units s, ms or samples

Output#

The output is KxN which is an average of the input signal MxN. The size of K is dependent on the type of averaging and the time constant. The unit of the output is the same as the input.

Attributes#

AttributeValue
NameTimeWeightedAverage
TypeLinear
Time constant125.0 ms
WindowRectangle
Overlap0.0 ms
Channels1

Name#

Name specifies the name of the block.

Type#

Type specifies the type of time averaging is performed. The type can either be Linear or Exponential.

Time constant#

Time constant specifies the averaging time of the block in either s, ms or samples.

Window#

Windows specifies the type of window used when time averaging.

Overlap#

Overlap specifies the overlap in time, when using a linear averaging, in either s, ms or samples.

Channels#

Channels specifies the number of input(s)/output(s) the block will have.

Literature#