User`s manual

The ENV Amt lets you control the amplitude and polarity of the envelope
signal sent to modulate the filter cutoff frequency. At the 0 position (12
o'clock), no envelope modulation occurs. When turned counter-
clockwise (below the 0 mark), the ENV Amt knob sends an increasing
amount of the inverted ADSR envelope. When turned clockwise (beyond the 0
mark) the ENV Amt knob sends an increasing amount of the standard, positive-
going ADSR envelope.
4.2.2.5 KBD Tracking
The filter cutoff frequency can also be keyboard-controlled. The KBD
Tracking knob lets you adjust how the cutoff follows the keyboard.
Repeat the exercise described in the Cutoff section, set the KBD
Tracking knob to 100% (12 o'clock), then play a series of notes on the
keyboard. The filter should open more to retain high frequencies as you play higher
up on the keyboard.
4.2.2.6 Envelope speed
This switch toggle the speed of both the filter and amplifier envelopes. In
fast mode, the ADSR curves can be very rapid, which is useful when
creating “snappy” and percussive sounds. In the slow mode, the ADSR
curves can be very slow, making them suitable for slow, evolving sounds like pads.
4.2.2.7 Filter Envelope
In normal mode, the Filter envelope is triggered by the
keyboard GATE signal. It can also be triggered by other
GATE sources such as the Sequencer clock [4.2.7] or the
rear panel’s external GATE IN jack [4.3.6]. Note that
depending on the position of the GATE Source switch
located on the rear panel [4.3.4], the filter envelope is
under the control of either the keyboard GATE signal, the
automatic GATE from the external Audio input [4.3.3], or the hold position of the
GATE switch.
The Attack slider sets the duration of the envelope’s first stage. Depending on the
filter section’s ENV Speed switch [4.2.2.6] the Attack time ranges from 1ms to 1s or
from 10ms to 10s.
The Decay slider sets the duration of the envelope’s second stage. Depending on
the filter section’s ENV Speed switch [4.2.2.6] the Decay time ranges from 1ms to 1s
or from 10ms to 10s.
The Sustain slider sets the level of the envelope’s sustain stage.
The Release slider sets the duration of the envelope’s final stage. Depending on
the filter section’s ENV Speed switch [4.2.2.6] the Release time ranges from 1ms to
1s or from 10ms to 10s.
A LED indicator shows the amount of filter envelope sent to filter. The LED’s
Arturia MiniBrute SE User's Manual 33 4 General description