Crest Audio IPRO ONE Manuale - Pagina 14

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Crest Audio IPRO ONE Manuale
SETTING UP A DE-ESSER:
The human voice has a lot of sibilance. The high frequency content of certain consonants can quickly overload a system
with harshness. To help reduce this problem, the compressor can be configured as a de-esser, or a compressor that
primarily responds to high frequencies. When the offending "SSSS" is detected, the gain is automatically reduced to
lessen its effect, leaving a more pleasing voice. Setup is very easy.
1.
Begin with all the functions off. Set up the mic input for normal operation (gain, low cut, phantom power, etc.) If
any EQ is needed, adjust with Parametric EQ # 1.
2.
Monitor the processed output and set the controls of Parametric # 2 this way: Octave = centered, Frequency =
4 kHz, Level = max. The sibilance energy should dominate; you may have to tweak these controls to get it
exactly right. Then set Parametric EQ # 2 in the Side Chain mode. (The yellow LED will light.)
3.
Set the Compression Ratio control to 6:1 or higher. Adjust the Compressor Threshold CCW until the gain
reduction meter indicates 9 to 12 dB of reduction (set as necessary). The high frequency content of the source
should be suppressed.
4.
Recover compression losses with the Dynamics Gain control.
5.
Set the main output to the desired level.
REMOVING RUMBLE MODULATION FROM THE COMPRESSOR:
Since low frequencies take control of the compressor action by virtue of their dominate energy; undesirable mic handling
noise, stage rumble or wind noise can severely modulate the compressor, causing pumping and breathing effects. To
overcome this problem, we set up the compressor's Side Chain to overlook the low frequency content and focus on the
vocal range.
1.
Set up the mic normally (see Recording paragraph).
2.
Set Parametric EQ # 2 like this: Frequency = 150 Hz, Octave = centered, Level = -12 dB.
3.
Then set Parametric EQ # 2 in the Side Chain mode. (The yellow LED will light.)
4.
Adjust the compressor controls as you normally would and tweak Parametric # 2 to taste. With the low
frequencies reduced, the signal will sound more natural when heavily compressed.
As you can see, this is a very flexible and useful tool for many applications. Just put it in line and have fun.
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