Roland Sonar V-Studio VS-700 - Manual (Page 91)

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Overview of the Fantom VS
When using the Fantom VS, you will notice that a variety of
different categories come into play when working with
sounds. What follows is a simple explanation of each sound
category.
Tones
On the Fantom VS, the tones are the smallest unit of sound.
However, it is not possible to play a tone by itself. The patch
is the unit of sound which can be played, and the tones are
the basic building blocks which make up the patch.
fig.04-002.e
Tones consist of the following five components.
WG (Wave Generator)
Specifies the PCM waveform (wave) that is the basis of the
sound, and determines how the pitch of the sound will
change.
The Fantom VS has 1,240 different waveforms. All patches
built into the Fantom VS consist of combinations of tones
which are created based on these waveforms.
There are four wave generators for each rhythm tone
(percussion instrument sounds).
TVF (Time Variant Filter)
Specifies how the frequency components of the sound will
change.
TVA (Time Variant Amplifier)
Specifies the volume changes and the sound’s position in a
stereo soundfield.
Envelope
You use Envelope to initiate changes to occur to a sound
over time. There are separate envelopes for Pitch, TVF (filter),
and TVA (volume). For example if you wish to modify the way
in which the sound attacks or decays over time, you would
adjust the TVA envelope.
LFO (Low Frequency Oscillator)
Use the LFO to create cyclic changes (modulation) in a sound.
The Fantom VS has two LFOs. Either one or both can be
applied to affect the WG (pitch), TVF (filter) and/or TVA
(volume). When an LFO is applied to the WG pitch, a vibrato
effect is produced. When an LFO is applied to the TVF cutoff
frequency, a wah effect is produced. When an LFO is applied
to the TVA volume, a tremolo effect is produced.
LFO is not included in the rhythm tones (percussion
instrument sounds).
How the Fantom VS is Organized
Classification of Fantom VS Sound Types
WG
Pitch
Envelope
TVF
TVF
Envelope
TVA
Envelope
TVA
LFO 1 LFO 2
control signal
Tone
audio signal
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