Auto Gain
Easy Effects Autogain is based on the library libebur128 which implements the EBU R 128 standard for loudness normalization. It changes the audio volume to a perceived loudness target that can be customized by the user.
- Target
Loudness level.
- Silence
Silence threshold. While the momentary loudness is below this value the autogain won't make any changes to the current gain being applied to the signal level.
- Maximum History
Range of time taken into account for the calculation of loudness level and output gain.
- Reference
-
The parameter used as reference to evaluate the output gain.
Momentary - Measures the loudness of the past 400 milliseconds.
Short-Term - Measures the loudness of the past 3 seconds.
Integrated - Ideally it indicates how loud the content is on average. It measures the loudness on a long range of time, depending on the value set as Maximum History.
Geometric Mean - Uses the geometric mean of all the above mentioned parameters, or two of them at user choosing.
- Reset History
Resets the Autogain history related to chosen Reference.
- Monitor Parameters
-
Autogain values shown as stats.
Relative - Used to detect silence. Whenever the Momentary term is below a predetermined threshold, modifications to the output gain will be disabled.
Loudness - The difference between its value and the target loudness determines the output gain.
Range - Indicates how large is the dynamic range of the content played.
Output Gain - The input signal is adjusted by this correction gain to bring its loudness to the target value.