Advanced Sound Programming
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Using the Time Envelope as Event Offset
When using
STEP
or
EVENT
Playback Modes you may find that some of the Events (i.e.
the individual snippets) of the sample start too slowly or too quickly, or they have an
unwanted bit at the beginning. Clever use of the
Time
envelope can solve any such
problems:
Recall patch number
012:Poppy Day
and touch the
OSC1
pad
. Take a look at the
OSC Type page - the
Playback Mode
is
Step
, and that is why the Events are played
in strict succession whatever notes you play. There are four Events in this patch: “Paw-
Pee-Day-Daah”.
Touch the
Time
tab .
Although
the
Time
parameter is set to
-19
, this is the same
as selecting
ZERO Time Offset
with
Time
at +1 (I programmed this sound before the
Time
Offset pads were included). So
FWD
mode with
Time
=
-20
as well as
BWD
mode with
Time
=
+20
are the same as
ZERO
mode with
Time
= +0. Check this.
Important here are the
Env Depth
,
Decay
and
Sustain
values. In combination they
cause the first part of each and every Event to be drastically shortened, so you can see
this trick as a sort of
Start Offset
(see the
OSC Type
page) for individual Events. Try
changing
Env Depth
to
+0
to see how much difference this makes!
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Using the Time Envelope for Delayed “Freezing”
Especially in combination with the Start Offset parameter, a similar method can be used
to isolate and freeze any part of a wave, but still include some attack at the beginning.
You will find a prime example of this trick in the presets: In
147:GizmoVox
, the sound
of oscillator 1 hardly resembles the original wave.
Recall
512:INIT PATCH
, set
OSC1
/
Osc Type
to
PCM
and select Waveform
077
“
M Doo”
. Touch the Pitch tab and listen to the sound. The pitch rises at the
beginning, then loops through a section of natural vibrato. Note that the Loop button is
not available - this is because a loop has been defined within the sample.
Our hypothetical goal (for learning purposes only) is to manipulate this sound so that it
starts with the initial attack, then freezes in the middle of the “oo” bit, all at the same
pitch and with no vibrato/tremolo whatsoever...
Touch the
Robot Voice
pad
to flatten the pitch, then touch the
Time
tab and
select
ZERO
. Trying out all positive values for the
Time
parameter shows that they
either slow the beginning down too much, or else they make the tremolo too obvious.
Changing
Start Offset
(in the
OSC Type
page) doesn’t help either, because the entire
wave is still “frozen”. Here’s the simple solution:
Leave
Time
at
+0
, flip
Sustain
down to
0
and set
Decay
to
40
. You will still only
hear the frozen beginning of the wave. Now take
Env Depth
up to around
+20
.
What is happening here is that the envelope effectively shifts the
Time
parameter up to
+20
, then quickly takes it back to zero before the tremolo starts - so the wave is
frozen at this (later) position. To add some movement back into the sound, take
Sustain
up. Around
40
is nice and subtle
.
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