Patrik T wrote on Thu, 20 April 2006 11:29 |
jfrigo wrote on Thu, 20 April 2006 15:36 |
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...Even with the settings, there are too many variables to actually make it work well.
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Yes, but since there are the same variables and bands regarding the compression part as well as the expansion part of a MB, does it really make a difference if it is compressing or doing expansion? It will mess up the audio either direction, won't it?
I was not aiming the expansion-thing towards saving overcompressed material, but instead uncompressed material.
If we compress the low end with a MB it will affect a kick, the bass, some low end on some guitars and a bit of the singers voice, where each and individual instrument might have had different settings on their possible dynamic processing thingies.
I don't understand why expansion should be worse than compressing as long as we're talking about a full mix and a multiband compressor. They're both a pain in the butt.
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It's not if it's the first dynamic process and not used in an attempt to restore lost dynamics from a result of over compressing. Expansion is beneficial to add clarity to high noise floor material. By reversing the compression to where low signals are lowered even more, dynamic range increases, the louder keeper material remains unaffected above the threshold, the noise floor is expanded down. The result is a cleaner sound.
What Jay is talking about is using expansion to reverse hypercompression or very heavy compressed material. It will expand the signal down and increase dynamic range, but it's only effective for a couple of dB's before the cure is worse than the disease. My experience mirrors his, you can improve some material slightly, but it's no cigar as the dynamics are destroyed when they the dynamic range is taken away by the heavy compression. IOW, using an expander to get back some dynamics from hypercompressed material, will only affect the audio below the threshold, above the threshold the material is still hypercompressed. The waveform will look like it's restored some as a little bit of crest factor returns, but it's on the RMS level not the peak level and it's the loudest sections that degrade the most during hypercompression.