DigiDesign Hybrid, Manual

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Hybrid Plug-In Guide 12
attenuation of 6 dB/oct equals a pole. Because
an attenuation of 6 dB/oct equals a pole, a two-
pole low pass filter has an attenuation of 12 dB
per octave above the cutoff frequency.
The Resonance parameter accents the frequen-
cies around the cutoff, which at extreme settings
can lead to
self-oscillation : The filter produces an
additional audio signal at the frequency of the
cutoff. Modulating the filter cutoff, while the fil-
ter is self-oscillating, produces atonal electronic
spectra. This is analog filter frequency modula-
tion. In this guide, it is referred to as
filter FM .
Hybrid offers an envelope-controlled analog
multimode filter with 23 different filter types,
all with resonance and self-oscillation. The dif-
ferent types include low-pass, high-pass, band-
pass, band reject, and all-pass filters with various
poles, and the combinations of more than one
type.
A dedicated saturation parameter adjusts the
amount and characteristic of the filter distor-
tion.
A blend of Oscillator 3 and the Noise Generator
can be used as an audio modulation source for
filter FM.
Amplifier Section
Controls the loudness and po-
sition of the output sound in combination with
envelope generators and LFOs.
Envelope Sections
Give shape to the sound. The
shape of an envelope is specified by a number of
segments, forming a graph of level against time.
By playing a note, the envelope runs through its
segments. Most segments have at least an as-
signable time or level, and modulation enve-
lopes typically have both.
Hybrid has four envelopes: two main envelopes
(one for the filter and one for the amplifier) and
two assignable modulation envelopes. All Hy-
brid’s envelopes have for segments: attack, de-
cay, sustain, and release (commonly abbreviated
as ADSR). In addition to the ADSR segments, the
main envelopes have an extra decay segment
with control over time and level. A delay time,
an additional decay, and adjustable levels for
each segment add to the modulation envelopes.
Concisely, Hybrid
provides:
• Two ADDSR envelopes
• Two DADDSR envelopes with free adjust-
able levels
LFOs (Low Frequency Oscillators)
Generate cy-
clic modulation signals at a very slow rate. By
modulating pitch or loudness, they imitate vi-
brato or tremolo effects. Modulating the cutoff
produces electronic sweeps. Hybrid provides
three LFOs:
• Two monophonic LFOs, where monophonic
refers to one modulation distributed to all
voices.
• One polyphonic LFO, where polyphonic
refers to a separate LFO for each voice.
All LFOs have multiple waveforms and several
tempo-syncing options.