< on >
The external signal is also sent to the SUNSYN’s mixer. This is in turn hardwired to
the filter and the VCA.
5. To get out of the External In menu, you press the
(Menu)
-button or you press the
(Exit/Cancel)
-button several times.
Envelope-Follower:
As we already mentioned, you can send audio signals and control voltages into the External
In. These control voltages can be used to modulate some parameters.
When trying to send an audio signal to a control input of a SUNSYN module, to modulate
the VCF Cutoff Frequency e.g., there will be a need for an envelope follower. The envelope
follower extracts a smoothed control voltage out of the audio signal. This control voltage will
follow the audio signal’s volume envelope.
This control voltage can now, through the means of Routing Elements (more on this later
on), be used to modulate one or several SUNSYN parameters. The external signal will
modulate the SUNSYN parameters.
An example: (we’ll explain how it’s done in the Chapter
Routing Elements
)
• We send a drumloop into the External-In. The SUNSYN produces a sound which changes in
sync to the rhythm of the drumloop (e.g. its volume fluctuates) because the envelope
follower of the External-In modulates the Cutoff Frequency of the VCF.
Important:
• Compared to the extremely high output level of the oscillators, the attainable level of the
External-In is relatively low. To create more extreme effects and to get more intense
modulations, you should use several Rounting Elements parallel to eachother when inserting
external signals. You’ll find more details in the Chapter
Routing Elements -
Modulomania
.
• To hear the signal of the External-In, the VCA must be opened by its envelope. This
envelope is started by triggering a note. This means you must at least play one note on your
connected midi-keyboard or a sequencer must at least send a note-on command to hear the
signal.
• The more voices that play the external signal, the louder it’ll be. This means that the more
keys you play (maximum 8 of course), the louder the external audio signal will become at the
SUNSYN outputs.
External Input
3-4
030
Single Mode
Time
deduced Control Voltage
(Control
Voltage)
original Audio Signal
Level
Time
Level
rectified Audio Signal
Time
Level
thebook-all 07.11.2002 18:28 Uhr Seite 30 (Schwarz Bogen)
