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COMPOSER PRO MDX2200
Threshold
Gain 0 dB
Input
Output
oo:1
Limiter
Ratio 2:1
Ratio 4:1
Hard Knee
green yellow red
IKA Curve
LED
Fig. 4.2: IKA characteristic of the compressor section
The new IKA (Interactive Knee Adaptation) circuit prevents aggressive compression, created by high ratios,
from sounding too unnatural. This is achieved with an interactive control function, which begins above the
threshold level and introduces a Soft Knee curve characteristic in the range up to 10 dB above the threshold
point. Beyond this range, the signal is subjected to linear (Hard Knee) compression.
+ With the threshold control completely turned to the right, the threshold value is +20 dB. Since such a
value will not be reached in practice, you can use it to disable the compressor section and work exclu-
sively with the expander/gate and limiter circuits.
4.3.1 Initial settings for the compressor section
lortnoC gnitteS
hctiwsTUO/NINI
hctiwsTXECSTUO
hctiwsNOMCSTUO
hctiwsEVITCARETNINI
hctiwsRETLIFCSTUO
lortnocDLOHSERHTBd02+
lortnocOITAR1:3
hctiwsOTUANI
lortnocTUPTUOBd0
Tab. 4.2: Initial settings for the compressor section
Rotate the THRESHOLD control counterclockwise until an appropriate amount of gain reduction is indicated on
the GAIN REDUCTION meter. This operation will be accompanied by an audible drop in output level. The
OUTPUT control should now be turned clockwise to reinstate the output level. The level of the unprocessed and
the processed signal can be compared by pressing the I/O METER switch and observing the INPUT/OUTPUT
LEVEL meter.
Final adjustments of the controls can then be made to suit your particular requirements, including the RATIO,
ATTACK and RELEASE controls. The AUTO function of the attack and release times, provides program
dependent dynamic processing which suits most standard uses. If a condensed or wider sound processing
4. APPLICATIONS