Harman DBX 1066, Operation Manual

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6
Operating controls
-15
-10
-5
0
+5
+15
+20
+10
INPUT LEVEL (dB)
OUTPUT LEVEL (dB)
-15 -10 -5 0 +5 +15 +20 +10
1:1 Unity
2:1
4:1
:1
20:1
RED
Above Threshold
GREEN
Below Threshold
Rotation Point Threshold
1:1
2:1
4:1
:1
<
15
< 10
<
5
0
+5
+15
+20
+10
INPUT LEVEL (dB)
OUTPUT LEV
E
L (dB)
<
15
<
10
<
5 0 +5 +15 +20 +10
RED
Below Threshold
Above Threshold
OverEasy Range
G
R
E
E
N
AM
BE
R
&IGURE(ARD+NEE#OMPRESSION#URVEAND/VER%ASYš#OMPRESSION#URVEAND4HRESHOLD,%$S
Figure 3 shows the effect of 2:1 compression on a signal as it rises above and falls below the threshold. Below
the threshold the signal is not affected. Above the threshold, the output signal increases by only half of the
INCREASEIND" OFTHEINPUTSIGNALLEVEL)NOTHERWORDSWITHAD"INCREASEININPUTLEVELTHEOUTPUT
increases by only 1 dB, hence the 2:1 compression ratio.
-40
-30
-20
-10
0
10
Time
Signal Level (dBu)
Below Threshold
Above Threshold
Input Signal
-40
-30
-20
-10
0
10
Time
Signal Level (dBu)
Below Threshold
Above Threshold
Input Signal
Output Signal
&IGURE#OMPRESSION%FFECTON3IGNAL,EVELWITHA2ATIOATAD"U4HRESHOLD
#ONTOUR3WITCH
- This switch adds a gentle low frequency de-emphasis into the detector path. This is extremely
USEFULINKEEPINGLOWFREQUENCYPROGRAMMATERIALFROMhMUFFLINGvORhPUNCHINGHOLESINvTHECOMPRESSEDSIGNAL
This feature allows faster attack times and higher compression ratios with less artifacts. The switch will light
indicating contouring is activated.
#OMPRESSOR2ATIO#ONTROL
- This control selects the ratio between input and the output levels for signals above
THELEVELSETBYTHE#/-02%33)/.4(2%3(/,$CONTROL)TISADJUSTABLEBETWEENANDINFINITY.OTEWHEN
/VER%ASYšPROCESSINGISSELECTEDTHERATIOTRANSITIONSSMOOTHLYFROMTHELINEARTOTHECOMPRESSEDREGION!STHE
SIGNALEXCEEDSTHETHRESHOLDTHERATIOAPPROACHESTHERATIOSETBYTHE#/-02%33/22!4)/CONTROL
'AIN2EDUCTION-ETER
- This 12 stage meter shows the amount of gain reduction due to compression, expan-
SIONGATINGOR)NTELLIGENT0REDICTIVE,IMITING©DISPLAYINGGAINREDUCTIONFROMTOD"
!TTACK#ONTROL
- The ATTACK control sets the amount of time it takes the 1066 to begin compressing a signal
ONCETHEDETECTORHASSENSEDASIGNALABOVETHRESHOLD4HE!44!#+RANGEISFROMD"MSECFORATIGHTERAND
MORENOTICEABLECOMPRESSIONEFFECTWITHVERYLITTLEOVERSHOOT TOD"MSECFORMOREDELAYEDGRADUALCOM
-
PRESSION !VERYFAST!44!#+SETTINGWILLCAUSETHETOACTLIKEAPEAKLIMITEREVENTHOUGH2-3DETECTION