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MULTICOM PRO MDX4400
In pop music the dynamics of both kick drum and bass guitar are usually processed individually. The sidechain
filter is therefore ideally suited to apply overall compression in the mixdown, to compress the music while
increasing its loudness, but without having to accept the drawbacks described above.
Please note that we offer a whole series of high-grade equalizers and enhancers/exciters, which are perfect
tools to give any dynamics-processed signal the finishing acoustic touch. Please ask for detailed information!
5.3 Peak Limiter Section
As a section of its own and independent of the remaining control functions, the peak limiter enables you to limit
the maximum peak level on the MULTICOM PROs output. It has been designed for use in combination with the
compressor section. Independently of all compressor functions, you can protect subsequent devices against
signal peaks, short-time overload and excess modulation (radio stations, etc.).
Output
Input
Peak Limiting
Program Limiting
Release
Threshold
t/ms
Level
20 ms
10 20 30
5 ms
approx. 1 s
Fig. 5.3: IGC characteristic of the limiter section
The diagram illustrates the functioning of the IGC limiter. The solid graph represents the output signal, while the
dashed graph above shows the input signal response. The areas between the graphs represent the amount of
gain reduction (bright areas are clipping areas, i.e. signal peaks are radically cut off, dark areas show the
effect of the program limiter). The limiter is activated when the adjusted threshold is exceeded for more than 20
ms, so as to limit audible clipping to a very short moment. About 1 s after the signals has dropped below the
threshold again, the reduction is set to 0 dB, so that input and output signals are identical again (unity gain).
5.3.1 Initial Settings For The Peak Limiter Section
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Tab. 5.3: Initial settings for the peak limiter section
The THRESHOLD control of the Peak Limiter sets the threshold level, so that subsequent units are protected
from overloading. If the LIM comes on regularly or is on constantly, the OUTPUT control of the compressor
section must be turned down, as this control sets the level of the signal, which is routed to the Peak Limiter
section.
If this technique leads to an undesired drop in the overall level, it is recommended that you increase the
compression: either, reduce the threshold level, or increase the compression ratio with the RATIO control. The
OUTPUT control will compensate for a renewed drop in level.
5. APPLICATIONS