Loudness Envelope Curves

The loudness envelope curves represent the average loudness of the signal in different areas of the frequency spectrum. These curves are shown in the Loudness display of the wave window.

The following loudness curves are available:

  1. Momentary loudness (100 ms resolution)

  2. Short-term loudness (1 sec resolution)

  3. Integrated loudness (loudness of the entire file)

  4. Loudness range

  5. True peak hints

The curves can be shown individually or in any combination. Which curves are displayed and what frequency area they represent is specified in the Loudness Display Settings dialog.

Note

The resolution is 100 ms, which means the momentary loudness information is collected every 100 ms and the short-term loudness every second to match the EBU standard. This is the same for true peaks. A clipping indicator is displayed when a 400 ms audio region contains one or more over peaks.