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Hard Knee
Soft Knee
Increasing signal level
Increasing signal level
1:1
1:1
10:1
10:1
l abc
15
Threshold
Ratio
Knee
sets the level above which compression takes place. Signals below the threshold will remain
unaltered. Turning the control clockwise lowers the threshold level and allows more of the signal to be
compressed.
is the 'strength' of compression above the threshold level. The higher the ratio, the greater the effect.
At a compression ratio of 2:1, the effect is mild and suitable for the subtle compression of vocals or of a
complete mix. At 12:1, compression is becoming stronger and more noticeable. Ratios between 3:1 and 15:1
are suitable for the 'compressor' sound, used as an effect in its own right. Higher ratios are used for the control
of extremely peaky signals.
The point where the slope of the Compressor curve changes is knows as the .
Diagram 2
Diagram3
The DN500 Plus has an
adjustable knee, variable between 'Hard' and 'Soft':
+20
+20
-10
-10
+10
+10
-20
-20
Output level (dB)
Input level (dB)
2:1
+20
+20
-10
-10
+10
+10
-20
-20
Output level (dB)
Input level (dB)
12:1
Compression: Setting The Controls