User Manual

NN-19 SAMPLER
(RECORD+REASON)
635
Filter Envelope Invert
If this button is activated, the envelope will be inverted. For example, normally the Decay parameter lowers the filter
frequency, but after activating Invert it will instead raise it, by the same amount. Note that Invert does not affect the
Osc pitch parameter (this can be inverted by setting positive or negative values).
LFO Section
LFO stands for Low Frequency Oscillator. LFOs are oscillators in the sense that they generate a waveform and a fre-
quency. However, there are two significant differences compared to normal sound generating oscillators:
• LFOs only generate waveforms with low frequencies.
• The output of the two LFOs are never actually heard. Instead they are used for modulating various parameters.
The most typical application of an LFO is to modulate the pitch of a (sound generating) oscillator or sample, to pro-
duce vibrato.
The LFO section has the following parameters:
Waveform
LFO 1 allows you to select different waveforms for modulating parameters. These are (from the top down):
|
Waveform
|
Description
Triangle This is a smooth waveform, suitable for normal vibrato.
Inverted
Sawtooth
This produces a “ramp up” cycle. If applied to an oscillator’s frequency, the pitch would sweep up to a set
point (governed by the Amount setting), after which the cycle immediately starts over.
Sawtooth This produces a “ramp down” cycle, the same as above but inverted.
Square This produces cycles that abruptly changes between two values, usable for trills etc.
Random Produces random stepped modulation to the destination. Some vintage analog synths called this fea-
ture “sample & hold”.
Soft Random The same as above, but with smooth modulation.