Klark Teknik DN500 User Manual download pdf (Page 28)

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Compression, Expansion and Limiting

The act of compressing a signal inevitably causes an increase in noise level. Compression reduces peak

levels; gain make up restores the overall level, and in the process increases the level of any background noise

that the signal contains.

Almost always, when compression is used, the Expander section of the DN500 Plus will be used also, to clean

up the signal. The Limiter/Clipper will control any unwanted peaks.

The result is three-stage dynamic control over gain with three different threshold levels:

In the mid-range of levels, the signal is unaltered. Above the compression threshold, in this example, gain is

reduced by a ratio of 2:1. Above the limiting threshold it is reduced by 25:1. At levels below the Expander

threshold, gain is reduced by 2:1. Complete control over signal dynamics is possible.

Diagram 7

+20

-10

+10

-20

Output level (dB)

Input level (dB)

Limiter Threshold

Compressor Threshold

Expander Threshold

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Klark Teknik DN500 User Manual Page 28