Klark Teknik U.S.A. Stereo Receiver DN530 Manual Do Utilizador

25

One of the most important applications of a noise gate is the reduction of noise 
emphasised by the action of compressors.  When any signal is compressed, the highest 
levels are reduced, but the lowest noise levels remain the same.  This effectively 
decreases the signal to noise ratio.  By gating the signal before it enters the compressor 
(as shown in the following diagram), the noise can be eliminated before it has chance to 
be exaggerated by the compressor action.

Some engineers prefer to connect the gate after the compressor.  This reduces any 
slight noise produced by the compressor itself, but since the dynamic range of the 
signal is less when it leaves the compressor, setting the correct threshold level may 
take a little longer.  Alternatively, the uncompressed signal may be paralleled to the 
external sidechain input; this external sidechain can then be used to trigger the gate.

Outp

ut

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Mic inputs

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Female XLR 

connector

Male XLR

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