Ableton Live Intro Manual de instrucciones descargar pdf (Pagina 266)

CHAPTER 20. LIVE AUDIO EFFECT REFERENCE 264

The Threshold slider sets the gate's sensitivity. If the gate is open and passing signal (i.e.,

the signal exceeds the gate threshold), the green LED lights.

The Attenuation slider, located beneath the Threshold fader, can attenuate signals below

the threshold rather than just cutting them off. 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.

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

is below the threshold.

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 clicking sounds, while long times soften the sound's attack.

When the signal goes from above to below the threshold, the Hold time kicks in. (Note

to tech heads: the gate has hysteresis, so the release occurs about 3 dB lower than the

threshold.) After the hold time expires, the gate closes over a period of time set by the

Release parameter.

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

choosers 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

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Ableton Live Intro Manual de instrucciones Pagina 266