5 - Effects
Core Effects Descriptions
96
Creative Professional
Max Compression
This parameter is used to limit the amount of gain reduction that the compressor can
apply. The limit is set as a maximum number of dB of gain reduction, from 3dB to
UNLIMITED.
This feature emulates the phenomenon of the compression “tail” found in the gain
curves of some classic analog compressor/limiters. The phenomenon results from the
inability of these devices to apply more than a certain amount of compression to the
input signal. When the device “runs out” of enough gain reduction to compress a very
high level signal, it resumes a 1:1 gain curve again. This “deficiency” has the unexpected
sonic benefit of restoring some dynamics to the compressed signal - but only on the
highest input peaks - thus adding some “life” back into otherwise over-compressed
signals.
E
Note:
You may need
to use the Gain
parameter to keep these
restored peaks from
clipping the compressor
output since Auto
Makeup gain doesn't
automatically take the
compressor tail into
account.
Unlike analog compressors, the Max Compression parameter allows you to adjust the
amount of gain reduction before the compressor returns to a 1:1 gain curve. The
diagram shows three settings of the Max Compression parameter; the compressor “gives
up” and returns to 1:1 after 6, 15 and 24dB of compression have been exhausted,
respectively.
The parameter is most useful at higher compression ratios, allowing the gain curve to be
carefully tailored to the dynamics of the signal as well as the Threshold and Ratio
parameters. The limit set by the Max Compression parameter does not apply to gain
reduction performed in the Soft Knee region of the gain curve.
Neg Compression
When the Neg Compression
parameter is
Enabled
, the range of
compression values available to
the Ratio parameter extends
beyond INFINITE to encompass
negative compression ratios from
1:-100 down to 1:-1. Using
negative compression ratios
results in an output signal that
actually gets quieter as the input
signal rises above the threshold.
This action can be useful for appli-
cations like ducking and for other
special effects.
0dB
-30dB
-80dB
Threshold: -30dB
Max. Compression
Max. Comp. = 6dB
Max. Comp. = 15dB
Max. Comp. = 24dB
Ratio = 4:1
0dB
-30dB
-80dB
Threshold: -30dB
Neg. Comp: Enabled
-10:1
-5:1
-3:1
-2:1
-1.5:1
-1:1
Ratio
Summary of Contents for 1212M
Page 1: ...1820 1820 Owner s Manual Owner s Manual ...
Page 8: ...8 E MU 1820M 1820 1212M PCI Digital Audio System ...
Page 54: ...4 The PatchMix DSP Mixer Main Section 54 Creative Professional ...
Page 110: ...5 Effects E MU E Wire VST 110 Creative Professional ...
Page 116: ...6 Using High Sample Rates Overview 116 Creative Professional ...
Page 138: ...7 Appendix Internet References 138 Creative Professional ...