Symetrix 528E Voice Processor Bedienungsanleitung PDF herunterladen (Seite 2)

QUICK START GUIDE: 528e Voice Processor

Setup

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Settings

Set the controls and switches on the front of the 528E as per the table

below.

Front Panel Control Setting

MIC / LINE As required

-15 PAD Out

MIC GAIN 12 o’clock

DE-ESS FREQUENCY 3K (12 o’clock)

DE-ESS THRESHOLD 0 (Full CW)

DE-ESS IN / OUT Out

DOWNWARD EXPANDER EXP

THRES

BYPASS (Full CCW)

COMPRESSOR COMP THRES +20 (Full CW)

COMPRESSOR COMP RATIO 2 (12 o’clock)

EXP/COMP IN / OUT Out

VOICE SYMMETRY IN / OUT Out

LOW EQ FREQUENCY 160 Hz (12 o’clock)

LOW EQ BANDWIDTH 1.5 octaves (12 o’clock)

LOW EQ CUT/BOOST 0 (12 o’clock)

MID EQ FREQUENCY 2.5K (12 o’clock)

MID EQ BANDWIDTH 1.5 octaves (12 o’clock)

MID EQ CUT/BOOST 0 (12 o’clock)

HIGH EQ FREQUENCY 6.8K (12 o’clock)

HIGH EQ BANDWIDTH 1.5 octaves (12 o’clock)

HIGH EQ CUT/BOOST 0 (12 o’clock)

EQ IN / OUT Out

GAIN 0 (12 o’clock)

You can now power on the 528E and it should pass signal. The

POWER LED should be illuminated and the OUTPUT LEVEL LED

display should show some activity.We can now move on to fine tuning

your settings.

Mic Preamp Gain

Set the MIC GAIN control so that the OUTPUT LEVEL LED display

indicates a signal between -10 and 0 VU. The CLIP LED should almost

never light. If it does, decrease the MIC GAIN control until it does not.

Any loss in gain can be made up for later in the signal chain.

De-Esser Settings

The De-Esser is used to reduce the level of objectionable sibilant

sounds (S and T sounds). Engage the De-Esser by pressing the

DE-ESS IN / OUT button IN. Set the THRESHOLD control so that the

de-esser gain reduction LED display shows about 12 dB of reduction.

Now, “tune” the FREQUENCY control for the maximum sibilance

reduction. Finally, reduce the setting of the THRESHOLD control until

you reduce the sibilance to a tolerable level without harming the quality

of the audio signal.

Downward Expander Settings

Use the Expander to reduce room noise or other low level or

background noise. Set the THRESHOLD control to allow low level

speech sounds to pass while still blocking out room sound or noise.

Compressor Settings

Use the COMP THRES control to determine the level at which the

compressor starts to work. As the sound level increases above the

set threshold, you will see the gain reduction LED display start to

work indicating the amount of gain reduction taking place. Generally

3 to 6 dB is sufficient, unless you are using a low compression ratio

(below 2:1), or you want a special effect. Pick a ratio suited to the task

at hand: low ratios and low thresholds for unobtrusive level control,

medium ratios for overall level control and consistency, high ratios

(greater than 8:1) for limiting or in-your-face sorts of sounds.

Equalizer Settings

Equalization is entirely dependent upon many factors and should

generally be used to correct or enhance the frequency content of the

signal. For example, the default settings should be close for the male

voice. For female voices, the LOW EQ range shifts up to 200 or 300 Hz

and the MID EQ range shifts up to 3-5 kHz.

If you are using a microphone that exhibits proximity effect, then you’ll

probably need to reduce (cut) the bass (LOW EQ) response somewhat.

3-6 dB should be fine, but you’ll have to compromise between a big full

sound and the overbearing low frequency content. A bit of MID EQ will

help make voices cut through and seem louder. The HIGH EQ can add

brightness and intimacy.

It will take some tuning and experimentation based on the signal

source, microphone used and personal taste.

Output Settings

For many applications, setting the output GAIN control to 0 dB works

fine. If you are adding a lot of EQ, this will tend to cause an overall level

increase. Thus, you may need to lower the output GAIN appropriately.

Likewise, if you are using a fair amount of compression, you may

need to add some gain to compensate for the gain reduction in the

compressor section. You should adjust the output GAIN control so that

it provides enough signal level to your connections downstream, yet still

prevents the CLIP LED from illuminating.

The output CLIP LED monitors both the equalizer and the output stage.

Large amounts of EQ boost and/or high signal levels can cause CLIP

indications. If this occurs, lower the signal level via the GAIN control.

It is also possible for the output stage to clip if a processor, inserted

via the OUTPUT STAGE INPUT jack, is contributing gain to the overall

signal path. In this case, either lower the gain of the inserted processor

or reduce the setting of the output GAIN control.

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