Elysia alpha compressor Manuel d'utilisateur télécharger pdf (Page 19)

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

Soft Clip Limiter

The Soft Clipper was designed to limit short, loud transients to prevent subsequent A/D converters

from clipping. However, the circuit does not behave like a classic brick wall limiter, but more like an

analog tape machine driven into saturation: it rounds the peaks instead of making hard cuts.

The Soft Clip modules are placed directly in front of the output stages. Their settings are not inu-

enced by the mix and gain controllers. This is also the case in M/S mode, because the limiters are

located after the M/S decoder and therefore are always assigned to the left and right stereo chan-

nels. Note that the channel link does not aect the circuit either – because of this the settings of

the Soft Clip controllers for both channels should always be identical!

If the alpha compressor is the last unit in the signal path before the A/D converter, it is only once

that the setting of the Soft Clip limiter has to be adapted to the converter. It is best to use a fast,

sample-accurate PPM meter to nd the right setting, because it is an accurate method of bench-

marking the resulting change in level.

The Soft Clip LEDs located on top of the gain reduction meters should only light up shortly, as

noticeable distortion appears if you drive this circuit too hard. Particularly with regard to acoustic

and classical music, this feature should be used with care and moderate settings only.

BASICS – Soft Clip Limiter

Left

Input

Soft Clip

Limiter

Left

Output

Right

Input

Soft Clip

Limiter

Right

Output

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Elysia alpha compressor Manuel d'utilisateur Page 19

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