Alesis MASTERLINK ML-9600 Informations techniques télécharger pdf (Page 38)

Chapter 5

28 ALESIS ML-9600 REFERENCE MANUAL

Make-up Gain

Make-up gain is applied after the compressor to "make up" the level lost during the compression

process. The ML-9600 has a make-up gain range of 0.0dB to +65.0dB, adjustable in 0.5dB increments.

Attack

The attack time of the compressor determines how long the compressor takes to begin to take effect

after audio rises above the threshold. Longer attack times allow for more of the audio's natural attack

envelope to be heard, and shorter attack times impose more of the compressor's characteristics on the

audio's attack envelope. The ML-9600 has an attack range of 0 microseconds to 9.9 seconds.

Release

The release time of the compressor determines how long the compressor takes to stop compressing the

audio after it has dropped below the threshold. Shorter release times cause the compressor to try to

follow the audio envelope closely, sometimes causing a "pumping" or "breathing" effect. Longer release

times tend to smooth out the compression effect. The ML-9600 has a release range of 0 microseconds to

9.9 seconds.

Key

The key parameter controls what channel the compressor is using to control the compression effect.

Usually, for stereo music, this is a summation of both channels, but can be either left only or right only.

Knee

The knee setting changes the way that the compression effect behaves around the threshold. A "hard"

knee begins to apply gain reduction (according to the ratio amount) at exactly the threshold value. A

"soft" knee begins to apply gain reduction before the threshold, but at a very slight ratio value. As the

input level increases, the ratio gets larger until, at some level above the threshold, the applied ratio is

equal to the ratio parameter. The ML-9600 has 5 different knee choices: Hard, Soft1, Soft2, Soft3 and

Soft4. These knees are shown in Figure 5.4.1.

Figure 5.4.1

Compressor Knees (-30dB Threshold, 20:1 Ratio)

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Alesis MASTERLINK ML-9600 Informations techniques Page 38