Propellerhead Reason Spécifications télécharger pdf (Page 124)

MALSTRÖM SYNTHESIZER

122

Controlling playback of the graintable

Each oscillator features three controls that determine how the loaded grainta-

bles 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 graint-

able 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 for-

ward 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 spec-

trum).

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 harmonic 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) en-

velope generator, and a Level control. These are used for controlling the volume

of the oscillator. One thing that makes the Malström different from many other

synths though, is the fact that the amplitude envelopes are placed before the fil-

ter 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 re-

lease it again.

Vol

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

! For an overall description of the general envelope parameters (At-

tack, Decay, Sustain, Release), please refer to the Subtractor chap-

ter.

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Propellerhead Reason Spécifications Page 124

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