SW32002: Loudness & SPL

Premium Loudness, SPL and LRA

Extension with graphical and numerical instruments for Loudness measurements

The Loudness & SPL license expands the basic PPM instrument with graphical and numerical instruments for loudness measurements as described in current loudness guidelines (EBU R128, ITU-R BS.1770-4/1771-1, ATSC A/85, ARIB, OP-59, AGCOM, CALM, LEQ(M), TASA, SAWA).
The range of metering instruments is extended with our highly recommended LRA instrument for the graphical display of the Loudness Range.

  • Full implementations of the latest loudness standards and recommendations
  • Bargraphs for summed Loudness with Momentary, Shortterm, Integrated values, and Loudness Range (LRA)
  • Numerical display of all relevant values like M, S, I, LRA, TPmax, Mmax, Smax, Itime
  • Adds the LRA instrument

For signals with more than four channels, software license SW32001 is required.

Loudness Sum

With the Loudness Sum instrument you get a bargraph display of the summed Loudness values M, S, and/or I of a Loudness measurement acc. to EBU R128, ITU BS.1770-4/1771-1, ARIB, ATSC A/85, OP-59, AGCOM, CALM Act, LEQ(M), TASA, SAWA, or specified by customer.
A SPL meter is also included.

Loudness Num

With the Loudness Num instrument you can monitor some or all relevant values of a loudness measurement on a numerical display: M, S, I, LRA, TPmax, Mmax, Smax, Itime.

LRA (Loudness Range)

The LRA (Loudness Range) instrument displays a graphical representation of the loudness variances within short time periods.
These are measured against the Loudness Range (LRA) descriptor specified in EBU R 128.

It is used to show whether a program has a continuously constant loudness or a high variation between low and high level components.
It allows for making assumptions on whether the program has seen or requires dynamic processing with regard to the intended distribution path.


Order item: SW32002



€ 680.00 | $ 782.00
(Net price plus currently applicable VAT)