On 20.03.2016 23:28, jonetsu@xxxxxxxxxxxx wrote:
What's the difference between this 'normalisation' and a heavy
compressor ?
Normalization in this context looks for the maximum single sample
amplitude in a piece of audio, to then apply a factor to all samples,
such that the new maximum amplitude is the maximum possible in an
integer format. Right below clipping level.
It cannot be done in real-time, as you would never know if the peak has
been reached.
If you hear a difference after such normalization, it may be due to
- level-dependent frequency sensitivity of your hearing
- distortion introduced by over-driving an analogue audio component.
This is peak normalization. There is also (less common) loudness
normalization working with average power or human-perceived loudness.
A compressor can work in real-time and does not apply a static gain factor.
--
Thorsten Wilms
thorwil's design for free software:
http://thorwil.wordpress.com/
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