General Music S2 Turbo, Owner'S Manual

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91
R
OM
-Sound, R
AM
-Sound, R
AM
Sound
The S Series houses over 500 permanent Sounds, called R
OM
-Sounds. These Sounds
cannot be cancelled or modified, but, starting from a Rom-Sound copy, you can apply one
or more modifications to produce R
AM
-Sounds.
R
AM
-Sounds are user-created Sounds, which can be saved to disk as a Setup Sound
Library.
The R
AM
Sounds are R
AM
-Sounds based on Waveform created with the Sample Trans-
lator, or loaded from floppy disks.
The Sounds are all organised and accessed in the Sound Library.
Waveform
There are two types of Waveform:
Rom-Waveform Waveform contained in Rom. These are the waveforms which are the basis of the
Rom-Sounds and the Ram-Sounds (not the Ram-Sound with the symbol
).
Ram-Waveform Waveform created with the Sample Translator or loaded from commercial floppy
disks. These waveforms are the basis of the Ram-Sounds with the symbol
(Ram Sound).
The Waveform or Waveforms upon which the Sounds are based are selected in the
W
AVESET
editor.
Filters
The filters and the Cutoff-frequency
In the Sounds, the Waveforms are modified by two state-variable 2-pole filters connected
in series (Filter 1 —> Filter 2). The programmable filters enrich or impoverish the
harmonic content of the sound.
Each filter can be set to operate as one of the following:
low-pass . Attenuates the higher frequencies, allowing only the lower frequencies to pass.
high-pass. Attenuates the lower frequencies, allowing only the higher frequencies to pass.
band-pass. Attenuates the frequencies above and below a given frequency.
parametric-boost. Enhances a given frequency.
parametric-cut. Attenuates a given frequency.
The frequency at which the Filter begins to “cut into” the harmonic band of a waveform
is called the “cutoff-frequency”. This frequency is programmable and it corresponds to
the level at which the filter acts on all the notes of the Sound.
The cut-off frequency can, however, be modified across the keyboard scale by means of
the “Filter Tracking” (s.) parameter.
Resonance
Resonance creates a high peak of emphasis at the cut-off frequency, rendering the har-
monic content of a sound richer. This parameter is commonly used to create “analog”
type sounds.
(11) Editing Sounds in the Studio