Propellerhead Reason - 4.0 Betriebshandbuch PDF herunterladen (Seite 230)

MALSTRÖM SYNTHESIZER

228

Controlling playback of the graintable

Each oscillator features three controls that determine how the loaded graintables are

played back. These are: The “Index” slider, the “Motion” knob and the “Shift” knob.

D The Index slider sets the playback starting point in the graintable.

By dragging the slider, you set which index point in the graintable should be

played first when the Malström receives a Note On message. Playback will then

continue to the next index point according to the active graintable. With the slider

all the way to the left, the first segment in the graintable is also the one that will be

played back first.

! Note that the Malström’s Graintables are not all of the same length, and

that the range for the Index slider (0-127) does not reflect the actual

length of the graintables. I.e. regardless of whether a graintable contains

3 or 333 grains, the Index slider will always span the entire graintable

even though the slider range says 0-127.

D The Motion knob controls how fast the Malström should move forward to

play the next segment in the graintable, according to its motion pattern

(see below).

If the knob is kept in the middle position the speed of motion is the normal default.

Turning the knob to the left slows it down and turning it to the right results in

higher speed. If the knob is set all the way to the left, there will be no motion at all,

which means that the initial segment, as set with the Index slider, will play over and

over as a static waveform.

D The Shift knob changes the timbre of the sound (the formant spectrum).

What it actually does is change the pitch of a segment up or down by re

sampling. However, since the pitch you hear is independent of the actual pitch of

the graintable (see above), pitch-shifting a segment instead means that more or

less of the segment waveform will be played back, resulting in a change of har-

monic content and timbre.

About motion patterns

Each graintable has a predefined motion pattern and a default motion speed.

When a graintable is looped (i.e. if the Motion knob is not set all the way to the left), it

follows one of two possible motion patterns:

D Forward

This motion pattern plays the graintable from the beginning to the end, and then

repeats it.

D Forward - Backward

This motion pattern plays the graintable from the beginning to the end, then from

the end to the beginning and then repeats it.

The motion speed can be changed with the Motion knob, as described above, but it is

not possible to alter the motion pattern of a graintable.

The amplitude envelopes

Each oscillator features a standard ADSR (Attack, Decay, Sustain, Release) envelope

generator, and a Level control. These are used for controlling the volume of the oscil-

lator. One thing that makes the Malström different from many other synths though, is

the fact that the amplitude envelopes are placed before the filter and routing sections

in the signal path.

The amplitude envelopes control how the volume of a sound should change from the

moment you strike a key on your keyboard to the moment that you release it again.

Vol

The Volume knobs set the volume level out from each oscillator.

! For an overall description of the general envelope parameters (Attack,

Decay, Sustain, Release), please refer to the Subtractor chapter.

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