Orban Debuts Loudness Meter Software - Radio World

Orban Debuts Loudness Meter Software

The beta version simultaneously displays instantaneous peaks, VU, PPM, CBS Technology Center loudness and ITU BS.1770 loudness.
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Orban says the first public beta of its Orban Loudness Meter Software for Windows XP and Vista is available for free download.

This is the first in a series of meters for the company. The beta version simultaneously displays instantaneous peaks, VU, PPM, CBS Technology Center loudness and ITU BS.1770 loudness. Meters include peak-hold functionality that makes the peak indications of the meters easy to see.

The CBS meter is a “short-term” loudness meter intended to display the details of moment-to-moment loudness with dynamics similar to a VU meter. It uses the Jones & Torick algorithm developed at the CBS Technology Center, published in 1981 in the SMPTE Journal, Orban said.

The software accepts two-channel stereo inputs. The VU and PPM meters are split to indicate the left and right channels. The PPM meter also displays the instantaneous peak values of the L and R digital samples.

Future paid versions of Orban Loudness Meter software will have features like logging, surround monitoring and oversampled peak measurements that indicate the peak level of the audio after D/A conversion.

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