Korg NAUTILUS Series, Руководство по параметрам, Страница: 284 / 961

EXi: MS-20EX
274
(BAND PASS FILTER) IN jack
This Patch Panel modification provides a direct input to the
Bandpass filter. This means that you can use the filter
separately from the Envelope Follower, if desired.
LOW CUT FREQ knob [0.00…10.00]
This knob adjusts the low-cut frequency of the Bandpass
filter. Only frequencies
higher than this will pass through
the filter.
HIGH CUT FREQ knob [0.00…10.00]
This knob adjusts the high-cut frequency of the Bandpass
filter. Only frequencies
lower than this will pass through the
filter.
(BAND PASS FILTER) OUT jack
This is the output of the Bandpass filter.
Frequency-to-Voltage (F×V) CONVERTER
This converter generates a “control voltage” signal based on
the pitch of the audio input, which you can then use to
control the pitch of the VCOs.
CV ADJUST knob [0.00…10.00]
Adjust this so that the input signal and the synthesizer’s
output signal are the same pitch. For more information, see
“Using the External Signal Processor (ESP)” on page 274.
F×V CV OUT jack
This is the output of the F-V CONVERTER. You can
connect this to the VCO 1+2 CV IN or VCO 2 CV IN jacks,
to control the oscillator pitch.
ENVELOPE FOLLOWER and TRIG OUT
The ENVELOPE FOLLOWER creates a control signal out
of the audio input level. For instance, you could connect the
ENV OUT to the LPF CUTOFF FREQ input, to create an
auto-wah filter.
The ENVELOPE FOLLOWER takes its input from the
volume-scaled SIGNAL IN , right after the SIGNAL
LEVEL knob.
Similarly, the TRIG OUT creates a trigger signal from the
input. Use the THRESHOLD knob to set the volume level
at which the trigger occurs.
PEAK LED [Off, On]
This LED shows that the ENVELOPE FOLLOWER is at
its peak value. You can use this as an aid when adjusting the
input signal’s level and/or frequency content for optimal
performance.
ENV OUT jack
This is the output of the ENVELOPE FOLLOWER .
Connect this to any modulation input.
THRESHOLD knob [0.00…10.00]
This sets the volume level at which the trigger occurs. Adjust
this to match the
TRIG OUT jack
This is the trigger generated from the audio signal. You can
connect this to the EG 1&2
TRIG IN jack, the EG1 TRIG
IN jack, or the SAMPLE & HOLD CLOCK input.
TRIG OUT LED [Off, On]
This LED shows that input signal is over the trigger
THRESHOLD , and that the trigger output is on. You can
use this as an aid when adjusting the THRESHOLD , LOW
CUT FREQ and HIGH CUT FREQ controls, or when
using other controls to modify the input signal.
Using the External Signal Processor (ESP)
You can use the ESP to control the MS-20EX from an
external monophonic audio source, such as a melody played
on a guitar. Just like the original MS-20, the MS-20EX will
trigger its EGs and track the pitch of the guitar–with varying
degrees of accuracy. Of course, the unpredictability is part of
the charm…
Note that this will only work with single–note input, such as
melodies; polyphonic input will not work properly.
You can also use the ESP as a modulation source when
processing audio signals through the MS-20EX. This can be
very useful with drums, for instance; you can use the input
signal to trigger EGs, use the ESP’s envelope follower to
modulate the filters, and so on.
Important: the ESP only works if an MS-20EX note is
being played! You can use the Hold parameter, or a damper
pedal, to sustain a single note indefinitely if desired.
To set up the ESP for external control:
1. If you are using a live input, connect the instrument or
microphone to the NAUTILUS audio inputs, and set
up the gain accordingly.
2. On the EXi Audio Input page, select the desired input.
For more information, see “4–2: EXi Audio Input” on
page 134 (PROGRAM mode), “2–6: EXi Audio Input” on
page 412 (COMBINATION mode), and “2–6: EXi Audio
Input” on page 487 (SEQUENCER mode).
3. On the Patch Panel, connect the EXi AUDIO INPUT
to the SIGNAL IN.
4. Play a note on the keyboard, or via MIDI. Use either
the damper pedal or the HOLD parameter to keep the
note sustained.
The ESP is only active when a note is being played.
5. Increase the THRESHOLD while watching the TRIG
OUT light, until it lights when playing at medium to
high volumes.
The light shows when the signal is over the trigger threshold.
6. Connect the ESP’s TRIG OUT jack to the TRIG IN
jack.
This makes EG1 and EG2 respond to the ESP’s trigger
output, instead of the keyboard.