Elysia alpha compressor Manuel d'utilisateur télécharger pdf (Page 16)

BASICS – Sidechain Filter

Sidechain Filter

The sidechain lter allows frequency-dependent shaping of the compression process by giving

specic frequency areas a stronger or weaker inuence on the detection circuit.

The linked M/S mode is most suitable to demonstrate the eect: Since the largest amount of signal

energy can be found in the middle as a general rule (bass drum etc.), the lter will have its greatest

impact here. A track with a balanced proportion of bass, middle and treble frequencies should be

chosen to give this function a try.

If the SC gain controller is set to HP (High Pass), the lter will act like a 6 dB high pass and the

reaction of the compressor on bass frequencies decreases. The setting LP (Low Pass) turns the

lter into a 6 dB low pass and the compressor reacts primarily on low frequencies. Again, the gain

reduction meter is a reliable aid to evaluate the distinct modes of operation.

The combination of sidechain lters, M/S matrix and dierent attack settings enables you to make

very selective changes and – depending on the source material – even to process single instru-

ments or voices in nished mixes. Details on that can be found in the Scenarios chapter.

Note: When working in linked stereo mode, the sidechain lters of both channels should be set to

identical values. In linked M/S mode, however, only the sidechain lter of the middle channel is

active, and in unlinked M/S mode the SC lter of the side channel is available, too.

Soft Clip

Gain Reduction

M/S Mode Active Channel Link

Mix

Gain

EQ Freq

SC Gain

SC Freq

EQ Gain

Auto Fast

Feed Forward

Auto Fast

x10

Transformer

Direct

Compressed

Thresh Attack Release Ratio

Soft Clip

Mix

Gain

EQ Freq

SC Gain

EQ Gain

Auto Fast

Feed Forward

Auto Fast

x10

Transformer

Direct

Compressed

Thresh

Attack

Release

Ratio

1:X

Soft Clip

SC Freq

Left

Input

Compressor

Sidechain

Filter

Gain

Stage

Left

Output

M/S Encoder

M/S Decoder

Right

Input

Compressor

Sidechain

Gain

Stage

Right

Output

M L

BASICS

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Elysia alpha compressor Manuel d'utilisateur Page 16

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