E-Mu PROTEUS FX Manual de usuario descargar pdf (Pagina 78)

5 - Effects

Effects Descriptions

78 Proteus VX Operation Manual

using a compressor is having the threshold set too low. This adds noise as the

compressor will always be reducing the volume.

The Ratio control determines how strongly the compressor will affect the signal. The

higher the ratio, the more reduction will be applied. If the ratio is high enough, (10:1)

the signal will effectively be prevented from getting any louder. In this situation, the

compressor will be acting as a Limiter, placing an upper limit on the signal level. In

general, ratios from 2:1 to 6:1 are considered compression and higher ratios above

10:1 are considered limiting.

The Output Gain control amplifies the signal after it has been compressed to bring it

back up in volume. If you don’t increase the gain, the compressed signal will be much

lower in volume.

Two other important 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. An attack setting of about 10 milliseconds will delay the onset of compression

long enough to preserve the attack transients in guitar, bass or drums while allowing

the sustain portion of the sound to be compressed. 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 compressor, but they can also be used to create special

effects.

Modulation Parameters

•None

Parameter Description

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

the threshold will be brought down in volume. Range: -50dB to +6dB

Ratio Sets the ratio of input signal level to output signal level, or “how much”

compression will be applied. Range: 0.20:1 to 10:1

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 1.0 second

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E-Mu PROTEUS FX Manual de usuario Pagina 78