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RE 128 Loudness Meter

Loudness Meter

Red Rock Sound

  • • Fully compliant ITU-R BS.1770 and EBU R-128
  • • Large informative graphic display
  • • Offers 3 distinct time scales

RE128 Loudness Meter provides precision loudness measurement and metering for broadcast, movie trailers, games, packaged media and more. Fully compliant ITU-R BS.1770 and EBU R-128 specifications. An R128 loudness meter as defined in EBU Tech Doc 3341 offers 3 distinct time scales:

Momentary Loudness (abbreviated “Mom”) – time window: 400 ms

Short-term Loudness (abbreviated “S.-T.”) – time window: 3 s

Integrated Loudness (abbreviated “Int”) – from ‘start’ to ‘stop’

Product details

The large display shows you a timeline of your programme's loudness and allows you to quickly spot loudness peaks and valleys as well as the dynamic range is excellent traced. Displays all standard loudness measurements: momentary, short-term and integrated loudness.

Zoom scales allows you to increase or decrease the range of scales LUFS and time displaying graphics on the display.

In addition to a large display on the front panel has three digital display with the ability to display the loudness measurement: momentary, short-term, integrated loudness and max peak.

Reference allows you to select the reference scale, on which you'll orient during the process.

External links

  • EBU Tech 3341 Loudness Metering: ‘EBU Mode’ metering to supplement loudness normalisation in accordance with EBU R 128:

  • ITU-R BS.1770: Algorithms to measure audio programme loudness:

  • EBU publishes loudness test material:


New in 1.0.1:

  • Added a second stereo input
  • Added reset indicator - reset only the digital display (large display is not reset)
  • Fixed flickering large display
  • Other minor fixes



Released: 2015-10-16
Version: 1.0.1