Oscillator Envelope Section - Native Instruments Reaktor Spark Manual

4.10 Oscillator Envelope Section

The Oscillator Envelope section determines the amplitude evolution of the Pulse and Sine oscillators.
The Oscillator Envelope section produces the modulating signal for the Sine and Pulse os-
cillator amplitudes. The a
of the oscillator amplitude envelope determine how the amplitude of the sound evolves over
time when a note is played. The time that the modulated oscillator amplitude takes before it
reaches its maximum value (determined by the a
attack time is controlled by the a
before it reaches its breakpoint value (determined by the b
the D 1 K . The D
ecay nob
the sustain level from the breakpoint level. The sustain level is the final, amplitude level of the
oscillator envelope that stays constant as long as the key remains pressed. You can change
it by using the S
uStain
level to zero after the key has been released, is called the release time and is controlled by
the r K .
eleaSe nob
To change the sensitivity of the overall amplitude level of the envelope to the key velocity, the
V l F is used. It determines the influence of the key velocity on the peak and
el to eVel aDer
sustain levels of the envelope. If set to 0, there is no influence and these levels are constant
over all ranges of key velocity.
When set in the interval between 0 and 1, the linear velocity curve is used with the influence
to the levels increasing with the V
key velocity influence with the V
and 2 the parabolic velocity curve is used with the influence to the levels increasing with the
V l V . The parabolic velocity curve exhibits higher velocity sensitivity at higher
el to eVel alue
, D 1, b
ttacK ecay reaKpoint
K . Similarly, the time that the amplitude level takes
ttacK nob
2 K controls the time that the amplitude level takes to reach
ecay nob
K . The time that the amplitude level takes to go from the sustain
nob
l
el to eVel
l V
el to eVel
, D 2, S
ecay uStain
K ), is called the attack time. The
MplituDe nob
reaKpoint
V . The dynamic range for the highest linear
alue
equal to 1 is 43 dB. For values between 1
alue
, and r p
eleaSe araMeterS
K ) is determined by
nob
REAKTOR SPARK – 31