Native Instruments Reaktor Spark Manual page 17

In the Modulation Envelope Amounts section you can adjust how much the modulation envelope affects SPARK's
most important parameters.
Right now our sound has good substance and structure, but something is still quite flat about
it. It's time to get our hands on the Modulation Envelope Amounts section. This will allow
us to make the sound have more liveliness by responding to the hardness with which the
MIDI keys are struck and have the timbres evolve from the moment the note is played. The
shape of the modulation envelope is given in the Modulation Envelope section to the left of
the Modulation Envelope Amounts section. The modulation amount knobs determine how
the parameters corresponding to the knob labels are modulated by the envelope. The knobs
that have a plus and minus sign can also cause an inverse modulation. Turning the c
utoFF
M K , for example, to the very left, will yield a low cutoff value for the modulation
oDulation nob
envelope peak, whereas when turned to the right, the cutoff will be higher for the envelope
peak. In most natural instruments the higher frequencies are excited a bit after the attack
phase and decay first. Following that observation we set the Cutoff Modulation Knob to 11
and the D M K to 8 (since a higher drive causes higher frequencies to be
riVe oDulation nob
excited). Modulation amount knobs without the plus and minus signs always cause a positive
modulation, that is, the modulation envelope peak causes the modulated parameter also to
be increased. We may remember, that for most natural instruments, it takes a certain amount
of time for the resonances characteristic to that instrument to build up. For that matter we
might also want to set the ring modulation amount to follow the modulation envelope by
turning the rM K all the way up. This gives a nice resonance to our sustained sound. We
nob
notice that the Fb F K is turned all the way up. This means that the feedback signal to
ilt nob
the filter input is suppressed by the modulation envelope, also suppressing resonances that
might be interesting to our sound. Turning the Fb F K down to the value 0.3 gives us a
ilt nob
longer lasting ring and further adds to the substance of the sound.
REAKTOR SPARK – 17