Ableton Live - 9.0 Bedienungsanleitung PDF herunterladen (Seite 324)

324 Live Audio Effect Reference

With the Flip button enabled, the gate works in reverse; the signal will only pass if its level is

below the threshold.

A gate can only react to an input signal once it occurs. Since it also needs to apply an attack/

release envelope, the gating is always a bit too late. A digital gate can solve this problem by

simply delaying the input signal a little bit. Gate offers three different Lookahead times: zero ms,

one ms and ten ms. The results may sound pretty different depending on this setting.

The Attack time determines how long it takes for the gate to switch from closed to open when a

signal goes from below to above the threshold. Very short attack times can produce sharp click-

ing sounds, while long times soften the sound’s attack.

When the signal goes from above to below the threshold, the Hold time kicks in. After the hold

time expires, the gate closes over a period of time set by the Release parameter.

The Floor knob sets the amount of attenuation that will be applied when the gate is closed. If set

to -inf dB, a closed gate will mute the input signal. A setting of 0.00 dB means that even if the

gate is closed, there is no effect on the signal. Settings in between these two extremes attenuate

the input to a greater or lesser degree when the gate is closed.

Normally, the signal being gated and the input source that triggers the gate are the same signal.

But by using sidechaining, it is possible to gate a signal based on the level of another signal. To

access the Sidechain parameters, unfold the Gate window by toggling the button in its title

bar.

Enabling this section with the Sidechain button allows you to select another track from the choos-

ers below. This causes the selected track’s signal to act as the gate’s trigger, instead of the signal

that is actually being gated.

The Gain knob adjusts the level of the external sidechain’s input, while the Dry/Wet knob allows

you to use a combination of sidechain and original signal as the gate’s trigger. With Dry/Wet at

100%, the gate is triggered entirely by the sidechain source. At 0%, the sidechain is effectively

bypassed. Note that increasing the gain does not increase the volume of the source signal in the

mix. The sidechain audio is only a trigger for the gate and is never actually heard.

Sidechain gating can be used to superimpose rhythmic patterns from one source onto another.

For example, a held pad sound can be triggered with the rhythm of a drum loop by inserting a

Gate on the pad’s track and choosing the drum loop’s track as the sidechain input.

On the right of the external section are the controls for the sidechain EQ. Enabling this section

causes the gate to be triggered by a speciﬁc band of frequencies, instead of a complete signal.

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Ableton Live - 9.0 Bedienungsanleitung Seite 324