Propellerhead Reason - 4.0 Manual de operaciones descargar pdf (Pagina 282)

NN-XT SAMPLER

280

D Freq

This is used for setting the filter cutoff frequency. The cutoff frequency determines

the limit above or below which frequencies will be cut off depending on the se-

lected filter type. In the case of a lowpass filter for example, frequencies below the

cutoff frequency will be allowed to pass through, while frequencies above it will be

cut off. The farther to the right you turn the knob, the higher the cutoff frequency

will be.

✪ It is very common to modulate filter frequency with the modulation enve-

lope, as described on page 280.

D Res

Technically, this knob controls feedback of the output signal from the filter, back to

its input. Acoustically it emphasizes frequencies around the cutoff frequency. For a

lowpass filter for example, increasing Res will make the sound increasingly more

hollow until the sound starts “ringing”. If you set a high value for the Res parameter

and then vary the filter frequency, this will produce a classic synthesizer filter

sweep.

For the notch and bandpass filter types, the Resonance setting instead adjusts the

width of the band. That is, the higher the resonance setting, the narrower the band

will be where frequencies are cut off (notch) or let through (Bandpass).

D K. Track

This lets you activate and control keyboard tracking of the filter frequency. If key-

board tracking is activated, the set cutoff frequency of the filter will change ac-

cording to the notes you play on your keyboard. That is, if you play notes higher up

on the keyboard, the filter frequency will be raised and vice versa.

When the knob is set to its center position, filter frequency is adjusted so that the

harmonic content remains constant across the keyboard.

Keyboard tracking is deactivated by default (the knob all the way to the left). This

means that the filter frequency will remain unchanged regardless of where on the

keyboard you play.

The Modulation Envelope

The Modulation Envelope parameters let you control how certain parameters, or des-

tinations, should change over time - from the moment a note is struck to the moment

it is released again.

The destinations you can use are:

• Pitch

• Filter frequency

Parameters

The following are the available controlling parameters:

D Attack

When you press a key on your keyboard, the envelope is triggered. The attack pa-

rameter then controls how long it should take before the controlled parameter

(pitch or filter) reaches the maximum value, when you press a key. By setting at-

tack to a value of “0”, the destination parameter would reach the maximum value

instantly. By raising the attack parameter, the value will instead slowly “slide” up to

its maximum.

D Hold

This is used for deciding how long the controlled parameter should stay at its max-

imum value before starting to decrease again. This can be used in combination

with the Attack and Decay parameters to make a value reach its maximum level,

stay there for a while (hold) and then start dropping gradually down to the sustain

level.

D Decay

After the maximum value for a destination has been reached and the Hold time has

expired, the controlled parameter will start to gradually drop down to the sustain

level. How long it should take before it reaches the sustain level is controlled with

the Decay parameter. If Decay is set to “0”, the value will immediately drop down

to the sustain level.

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Propellerhead Reason - 4.0 Manual de operaciones Pagina 282

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