REAKTOR SPARK – 31
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
ttacK
, D
ecay
1, b
reaKpoint
, D
ecay
2, S
uStain
,
and
r
eleaSe
p
araMeterS
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
MplituDe
K
nob
), is called the attack time. The
attack time is controlled by the
a
ttacK
K
nob
. Similarly, the time that the amplitude level takes
before it reaches its breakpoint value (determined by the
b
reaKpoint
K
nob
) is determined by
the
D
ecay
1 K
nob
. The
D
ecay
2 K
nob
controls the time that the amplitude level takes to reach
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
K
nob
. The time that the amplitude level takes to go from the sustain
level to zero after the key has been released, is called the release time and is controlled by
the
r
eleaSe
K
nob
.
To change the sensitivity of the overall amplitude level of the envelope to the key velocity, the
V
el
to
l
eVel
F
aDer
is used. It determines the influence of the key velocity on the peak and
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
el
to
l
eVel
V
alue
.
The dynamic range for the highest linear
key velocity influence with the
V
el
to
l
eVel
V
alue
equal to 1 is 43 dB. For values between 1
and 2 the parabolic velocity curve is used with the influence to the levels increasing with the
V
el
to
l
eVel
V
alue
.
The parabolic velocity curve exhibits higher velocity sensitivity at higher
Summary of Contents for Reaktor Spark
Page 1: ...MANUAL...
