41
Creating a Patch
Creating a Patch
Cautions When Selecting a
Waveform
The sounds of the Fantom-S are based on complex PCM waveforms,
and if you attempt to make settings that are contrary to the type of
the original waveform, the results will not be as you expect.
The internal waveforms of the Fantom-S fall into the following two
groups.
One-shot:
These waveforms contain sounds that have short decays.
A one-shot waveform records the initial rise and fall of the sound.
Some of the Fantom-S’s one-shot waveforms are sounds that are
complete in themselves, such as percussive instrument sounds. The
Fantom-S also contains many other one-shot waveforms that are
elements of other sounds. These include attack components such as
piano-hammer sounds and guitar fret noises.
Looped:
These waveforms include sounds with long decays as well
as sustained sounds. Loop waveforms repeatedly play back (loop)
the portion of the waveform after the sound has reached a relatively
steady state. The Fantom-S’s looped waveforms also include
components of other sounds, such as piano-string resonant
vibrations and the hollow sounds of brass instruments.
The following diagram shows an example of sound (electric organ)
that combines one-shot and looped waveforms.
fig.03-07.e
Cautions When Using a One-shot
Waveform
It is not possible to use the envelope to modify a one-shot waveform
to create a decay that is longer than the original waveform, or to turn
it into a sustaining sound. If you were to program such an envelope,
you would be attempting to shape a portion of the sound that simply
doesn’t exist, and the envelope would have no effect.
Cautions When Using a Loop
Waveform
With many acoustic instruments such as piano and sax, extreme
timbral changes occur during the first few moments of each note.
This initial attack is what defines much of the instrument’s character.
For such waveforms, it is best to use the complex tonal changes of
the attack portion of the waveform just as they are, and to use the
envelope only to modify the decay portion. If you attempt to use the
envelope to modify the attack portion as well, the characteristics of
the original waveform may prevent you from getting the sound that
you intend.
fig.03-08.e
The Compare Function
For the Patch Effect Copy and Patch Tone Copy operations, you
can use the Compare function.
If you want to play the copy-source patch, press [6 (Compare)]
to add a check mark. Now you can play the copy-source patch
from the keyboard or pad.
fig.03-06_50
The patch auditioned using the Compare function may
sound slightly different than when it is played normally.
TVA ENV for looped Organ
waveform (sustain portion)
Note off
Time
Level
Resulting TVA ENV
change
TVA ENV for one-shot Key
-click waveform (attack portion)
Note off
+
=
Tone change stored
with the wave
Envelope
for the TVF filter
Resulting
tone change
Looped portion
Time
Level
Reference_e.book 41 ページ ２００３年７月１４日 月曜日 午後３時２５分
