Native Instruments Deep Freq Manual page 32

We'll call the Oscillators/Filters "OSC" from here on.
The input signal is fed into a circuit that analyses its amplitude contour and generates am­
plitude envelopes for the 16 OSC based on that. It can operate in three different modes.
• In mode 1, the rectified input signal amplitude is compared against 16 equidistantly
spaced amplitude values in parallel. Each comparison result triggers one AHR enve­
lope when the result becomes "true." This means that the first of the 16 OSC will
sound at the very lowest input levels, while higher numbered OSC will needs progres­
sively more input level to be triggered. It also means that all OSC can be triggered
simultaneously by a full-scale input.
• In mode 2, the input signal is first fed into an Envelope Follower, whose output signal
directly selects one of the 16 envelopes and triggers it on selection. This also means
that higher input level equals higher OSC number, but the difference to mode 1 is
that only one envelope is triggered at a time (though they may sound at the same time
due to their decay phase).
• Mode 3 is similar to mode 2 in terms of how the envelopes are selected and triggered,
and thus in only one envelope being triggered at any one time, but it does not use the
Envelope Follower. Instead, it uses the rectified input signal like mode 1 does, and
feeds that into a sample and hold circuit.
The 16 envelopes are then used to control the levels of the 16 OSC running in one of
three modes: Sine, Ring-Mod or 36db/Oct Bandpass filters (fed with the input signal).
The Ensembles
Plagiarism
DEEP FREQ - Manual - 32