Propellerhead Reason - 4.0 Instrukcja Operacji Pobierz pdf (Strona 340)

THE EFFECT DEVICES

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5. If you now start playback of both devices, the level of Device A will be low-

ered whenever Device B sounds, and be raised again when Device B stops.

The amount of gain reduction, how quickly it lowers the level, and the time it take

for the level to return to normal again is determined by the corresponding Gain/

Threshold/Ratio and Attack/Release parameters.

Example 2 - using the Sidechain inputs to create frequency

sensitive compression

By inserting an equalized signal to the sidechain inputs you can make the compres-

sion more or less sensitive to a certain frequency range. A typical application of this is

“de-essing” - where harsh “S”-sounds in vocal material is reduced or eliminated.

Frequency sensitive compression is set up as follows:

1. Hold down [Shift] and create an instrument device.

Pressing [Shift] means no auto-routing connections to/from the device are made.

2. Hold down [Shift] and create a MClass Equalizer.

3. Hold down [Shift] and create a MClass Compressor.

4. Create a Spider Audio Merger and Splitter device.

5. Connect the outputs of the instrument device to the A and B inputs on the

Spider.

6. Route one pair of the split outputs of the Spider to the MClass Equalizer in-

puts.

7. Route the Equalizer outputs to the Sidechain inputs on the MClass Compres-

sor.

8. Route another pair of the split outputs of the Spider to the MClass Compres-

sor.

Now, the compressors normal audio inputs are fed the unprocessed signal, and

the sidechain inputs are fed the equalized signal.

9. Next, route the outputs of the Compressor to inputs on a mixer device.

10.Activate the Solo Sidechain button on the compressor’s front panel.

You will now only hear the equalized signal.

11.Now use the parameters on the MClass Equalizer to boost the frequencies

you wish should trigger the gain reduction and cut the frequencies you wish

to avoid triggering the gain reduction.

You can use rather extreme eq settings - the signal will not be heard when Solo

Sidechain is deactivated anyway. E.g. for de-essing you should separate and

boost the offending “S” frequencies as much as possible.

12.Deactivate Solo Sidechain when you have finished tweaking the equalizer.

Now, the compressor will be more sensitive to the frequency area you tuned in

with the equalizer, and thus react more to these frequencies. Note, however, that

the whole signal will still be compressed - not just the boosted frequencies - so in

case of de-essing you should usually use fast Attack and Release settings so that

the gain reduction does not affect the rest of the program too much.

CV Outs

On the back of the MClass Compressor you can find a “Gain Reduction” CV out con-

nector. This can be used to modulate other parameters with the amount of gain reduc-

tion applied by the compressor. This means that the compressor works as an

envelope follower. You could for example have the audio signal level control pan in a

mixer or a synth parameter.

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