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5 - Effects

Effects Descriptions

E-MU Systems 87

Limiter

The Limiter sets a “maximum level” on the audio. Beyond this Threshold, any increase

in gain is effectively prevented or limited, hence the name. A limiter works like a

compressor with a very high ratio setting.

The limiter is particularly useful for taming the highly resonant peaks that can be

produced by the Z-plane filters. Set a fast attack time to suppress transients and use the

Release control to reduce “pumping” effects.

The Output Gain control amplifies the signal after it has been limited to bring it back up

in volume. If you don’t increase the gain, the signal may be lower in volume.

Two other controls are Attack and Release. Attack controls how quickly the gain is

turned down after the signal exceeds the threshold. Release controls how fast the gain

is returned to its normal setting after the signal has fallen below the threshold again.

Longer release times are generally used to reduce the so called “pumping” effect as the

compressor turns on and off. Don’t make the release time too long, however, or the

compressor won’t have time to recover for the next pluck or hit. In general, the attack

and release controls are used to smooth out the action of the limiter, but they can also

be used to create special effects.

Modulation Parameters

•None

Parameter Description

Threshold Threshold sets the “trigger” level for limiting. Signal levels above the

threshold will be brought down in volume. Range: -50dB to +20dB

Output Gain Amplifies the signal after it has been compressed to bring up the

volume. Range: -24dB to +12dB

Attack TIme Controls how quickly the gain is turned down after the signal exceeds

the threshold. Range: 1 ms to 200 ms.

Release Time Controls how fast the gain is returned to its normal setting after the

signal has fallen below the threshold. Range: 0.2 second to 1 second

0dB

Threshold: -10dB

-10dB

-80dB

Signals above the

Threshold level are

prevented from

getting any louder.

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E-Mu PROTEUS FX Manual de usuario Pagina 87