If you are producing content for broadcast television, you may have to provide media files according to strict delivery requirements. A common delivery requirement is related to the maximum volume that a sequence can have.
You can measure the audio level of your clips, tracks, or sequences using the Loudness Radar effect.
Sets the range for the momentary range. EBU +9, indicates the narrow loudness range, used for normal broadcast. EBU +18 is the wide loudness range used for drama and music.
Low Level Below
Sets the shift between the green and blue colors on the momentary loudness ring. This indicates that the level may be below the noise floor level.
Sets the Loudness unit to display on the radar.
- LKFS: Loudness unit specified by the International Telecommunication Union (ITU)
- LUFS: Loudness unit specified by the European Broadcasting Union (EBU)
- LU: A unit for loudness relative to target according to EBU and ITU.
Species the Loudness standard.
- BS.1770-3: This ITU standard concerns Broadcast loudness and True-peak Level measurement. This standard uses Leq(K) to measure loudness.
- Leq(K): The loudness is based on a Leq measurement employing K-weighting, which is a specific frequency weighting developed by the Communications Research Center (a federal research institute in Ottawa, Canada).
Sets the maximum True-Peak level. If this value is exceeded, the peak indicator is activated.
The channel map at the bottom of the Loudness Radar indicates the In and Out channels, and also how the effect is instantiated.
Press the spacebar to play, or click Play on the Program Monitor. During playback, the Loudness Radar monitors the loudness of all the channels that are playing and displays it as a range of values illustrated in blue, green, and yellow.
- The color shape indicates the instant-by-instant average level of your project as it is playing.
- The second ring indicates the Target Loudness setting (based on the settings in the Loudness Radar).
- The other rings help you measure the on-going loudness of your project.
- The lower right corner indicates the average level of your entire project, measured in LKFS or LUFS (based on the settings in the Loudness Radar).
The Loudness Radar effect does not change the audio level. It gives you a precise measure of Loudness that you can use to change your audio loudness levels.