Moog Music Taurus 3 Bass Pedals - Manual (Page 13)

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Taurus 3 User’s Manual - The Components
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Taurus 3 User’s Manual - The Components
B – The Filter/Arpeggiator Panel
The dual-function Filter/Arpeggiator control panel provides controls to adjust Filter and Arpeggiator param-
eters. As with the Oscillator/LFO panel, the function of the controls in this panel depend on the status of
the SELECT LEVEL button. When ‘Upper’ is selected, the control panel buttons panel allow you to select
any one of the five Filter parameters. When ‘Lower’ is selected, the control panel buttons allow you to
select any one of the Arpeggiator parameters.
B.1. Filter
Filter Panel Controls:
AMOUNT:
Selects the filter envelope Amount parameter. This adjusts the Amount of the envelope that is applied to
the filter cutoff, from 0 to 100%.
ATTACK, DECAY:
These buttons select the filter envelope Attack and Decay time parameters. The Attack time is adjustable
from 5 to 56 msec. The Decay time is adjustable from 50 msec to 2.8 sec.
CUTOFF:
Selects the filter Cutoff parameter. Filter Cutoff can be adjusted from 20 Hz to 20KHz.
RESONANCE:
Selects the Resonance parameter. Resonance is adjustable from 0 to self-oscillation.
The Filter provides either dynamic or fixed timbre tonal
modifications. Dynamic changes are programmed by a
dedicated Envelope Generator, which provides indepen-
dent Attack and Decay envelope contours to open and
close the filter. The Filter is the classic Moog 24dB/octave
low-pass filter design.
The Filter panel provides controls for the filter Cutoff
and Resonance parameters as well as controls for the
filter envelope Attack and Decay parameters, and the
envelope Amount.
TECH NOTE: Like the Taurus 1, the source of the Taurus 3 filter envelope generator is a pulse signal,
which is great for simulating the timbre of a plucked string. Adjusting the filter envelope attack time
slows the rise time of this pulse, but it also limits how far up the pulse rises. This means that for a given
filter envelope amount setting, as the attack time increases, the perceived envelope amount decreases.