Direct-X VST plug-ins
License : 10
STEP -1- : Link bands in order to control all bands simultaneously.
STEP -2- : Link both channels before using de-compression (otherwise, left and right channels will be processed independently).
STEP -3- : Adjust Threshold level for all bands at once (since we have linked all bands into a single group in the above steps).
STEP -4- : Increase compression ratio, (still applies to all bands).
D10 ? What for ?
D10 is a device allowing you to de-compress a complex audio signal band per band (here, 10 bands) in order
to regain or re-emphasize dynamic power, get some punch, particularly on percussion sounds and, to some
extent, soften the compression applied during mastering and get this straight-from-the-mix raw signal back.
The idea of de-compression is not new to those who are used to playing with transfer functions : compression,
expansion, limiting, why not de-compression !? In the world of signal processing where most algorithms are
based on linear equations, the idea of inverting a compression process was fairly obvious. But, this had to
be tried in order to realize that you could get interesting results.
And D10, de-compressing sound octave by octave, really allows you to rescue an overflattened mix, process a
mastering again, save a signal which sounds too monolithic or compact, and, through doing all this, improve
overall sound clarity. D10 is not exactly a magic wand, but in spite of that, it can accomplish miracles when
retrieving many situations where nothing seems to bring any solution.
Like C10, D10 will be manipulated grossly so that you can evaluate the efficiency of the process as precisely
as possible. As suggested by the quickstart information, D10 allows you to start with coarse settings, with
very few steps and possibly, later, adjust parameters individually, choosing to apply them to small groups of
bands (for instance) or even band per band.
The principle on which D10 works is the same as C10 in every respect. Appart
from the compressors which, here, are de-compressors, the way you use it remains identical; GUI elements and
functions are similar, the only changing aspect will be, perhaps, the colour of the GUI.
Let's simply explain what is de-compression compared to compression :
On the transfer graph below (showing output level according to input level) you can see a standard compression curve. When it reaches threshold (here, -20 dB), the sound is compressed according to a ratio (here, 2:1 because the 20-dB input signal has been reduced to a 10-dB output signal). Compression, as its name implies, produces a loss in dynamics, that is to say a lowered output level (here, the output signal is reduced by 10 dB).
The "auto make-up gain" function allows you to get the original signal level back by increasing the output level after it has been compressed. Here, the theoretical gain of +10 dB allows you to bring the output signal back to 0 dB.
On the transfer graph below (showing output level according to input level) you can see a standard de-compression curve. When it reaches threshold (here, -20 dB), the sound is de-compressed according to a ratio (here, 1:2 because the 20-dB input signal has been increased to a 40-dB output signal). De-compression, as its name implies, produces a gain in dynamics, that is to say an increased output level (here, the output signal is increased by 20 dB).
The "auto make-up gain" function allows to get the original signal level back, but, this time, by lowering the output signal after it has been de-compressed. Here, the theoretical gain of -20 dB allows you to bring the output signal back to 0 dB.
D10's measuring tools :
D10 features a very comprehensive screen with measuring tools allowing you to
assess what is going on for each band, regarding levels as well as phase characteristics (in stereo).
D10's measuring tools are similar to C10's and follow the same concepts. The difference lies in the fact
that, here, de-compression is not a softening of sound but the opposite : a gain. Therefore, the
de-compression level indicator (blue on the figure below) goes from bottom to top.