Acoustic U weighting function.

Syntax

Output = dBu(Freq, Mag, Ref)

Arguments

Name

Description

Freq

The frequency vector containing real data.

Mag

The magnitudes of the spectrum.  A vector of real numbers having the same length as Freq.

Ref (optional)

A reference value (and a positive number).  Defaults to 1.0.

Outputs

Name

Description

Output

The weighted response.  A vector of real numbers.

Example

Apply U weights to the magnitudes of the frequency spectrum of a signal.

Syntax

Output = dBu(Freq, Mag, Ref)

Results

The output is the weighted magnitude spectrum.

Comments

The dBu function returns the U-weighted frequency curve for the input curve.  The U-weighting dampens the ultra-sonic components of the input curve.  The Mag vector is divided by Ref and then weighted.

The function does not express the output in dB, following the Templex™ strategy in which the dB conversion is handled by the plot.

See Also:

dBa

dBb

dBc