Doepfer Schaltwerk (device no longer available) User Manual

Page 19

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Doepfer Musikelektronik GmbH - SCHALTWERK Users Manual - Aug. 1997 - Page 19

7.4.8.1. Arpeggiator Modes

To say that the Schaltwerk includes an arpeggiator is
not exactly right.

But rather, that the sequence control of the individual
tracks is applied to the incoming Note-Events, so that
arpeggio-like effects are rendered.

Furthermore, the notes of the arpeggio are directly put
into the step note memory location, so that they are
immediately processed, and can be individually
(de)activated. The difficult task of developing simple
arpeggiated polyrythmic structures can be carried very
simply.

Qualify this effect as an arpeggio was the closest word
available at hand.

You should take note that this effect is not a cleverly
custom designed arpeggiator but rather a byproduct of
the Schaltwerk concept.

You will perhaps miss some typical arpeggio-like
functions, but the wide offering and possibilities of
functions previously unavailable in this form, will
present a fair match.

To use this effect, you connect a master keyboard at the
input 1, make it send its data on MIDI channel 1, and
set the same channel to a free track of the Schaltwerk
i.e. track 2.

To proceed, you adjust the note number to 0 (zero), so
that the arpeggio sequence will not be transposed yet,
something you can change later for an even more
pleasant effect.

In the effect menu you should set the arpeggiator to
MIDI input 1.

Track >_2_____m<

Arpeggiator:IN1

You can now start the Schaltwerk and press a key on
the keyboard.

The note will play repeatedly at the Schaltwerk tempo. In
accordance, the arpeggiator will set the first step, so that
you should normally hear something.

When you release the key, the sound stops. You can
check that the note in step 1 is still available. Releasing
all the keys will switch back to step 1.

If you now press 3 keys, you will see the position
indicator run from step 1 to step 3 repeatedly.

Therewith, to hear the complete arpeggio pattern, the
steps 2 and 3 must also be switched on.

Release now the keys successively and the running
span of the Step cursor will shrink accordingly, down
to step 1.

If you set the arpeggiator to OFF while holding some
keys, their notes will continue to be sequenced, even
when releasing them.

When you take a look at the End Step parameter, this
one is now set to 3.

If you now check the 3 note values, these are exactly
the last ones played on the keyboard.

The arpeggiator is realized through the simple system
of checking an incoming note and assign it to the next
Step position available. The End Step counter is also
incremented by 1. This system works up to 16 notes.

By releasing a key, the End Step counter is simply
decremented.

The Step-Note values remain unaffected but stop
playing because of the decrease in the End Step
counter.

Not only are the Step Note values taken into
consideration but also their velocities which are
assigned to their respective Step Velocity locations, to
get a very lively arpeggio.

If no new notes are received while the arpeggiator is
active, all Step Notes & Velocities are held and can
be further processed.

You can, for example, set the End Step to a higher
value and the previously hidden notes will reappear in
the arpeggio sequence.

You can also try to (de)activate various steps to see
what kinds of polyrythmic patterns are possible with
this stylistic approach.

You can also change the operating mode of the track
from “UP” to “UP-1 Oct.” or “UP-2 Oct., etc.

Doing so, will also make the arpeggiator musical
results correspondingly complex and rich.

A hold function is available for the arpeggiator
through the sending of a ArpHoldController (see
MIDI-Remote-Menu). If an “ON” message (controller
value higher than 63) is received on the appropriate
MIDI channel, the arpeggio will be held as long as the
message is effective. New notes won’t be taken into
account as long as an “OFF” message is not received.

The “ON” message is indicated in the menu by a “!
sign at the end of the line.

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