65
Creating a Sound or Drum Set
■
Parameters for Sound Editing
On the SC-8850, parameter settings are made for each Part. In other words, parame-
ter values belong to Parts, and not to sounds (Instruments). For example, if you set
Vibrato Rate to +20 and then select a different sound for that Part, the Vibrato Rate
of +20 will apply to the newly selected sound (not the initial value of +/-0). In this
way, parameters belonging to Parts are called
Part parameters
.
Vibrato
Vibrato is an effect created by modulating the pitch. Applying vibrato makes the
sound more expressive.
■
Vib Rate (Vibrato Rate)
-64–
0
–+63
This parameter adjusts the speed (frequency) of the pitch modulation. Positive (+)
settings make the pitch modulation faster, and negative (-) settings make it slower.
■
Vib Depth (Vibrato Depth)
-64–
0
–+63
This parameter adjusts the depth of the pitch modulation. Positive (+) settings make
the pitch modulation deeper, and negative (-) settings make it shallower.
■
Vib Delay (Vibrato Delay)
-64–
0
–+63
This parameter adjusts the time required for the vibrato effect to begin. Positive (+)
settings increase the time before vibrato will begin, and negative (-) settings shorten
the time.
fig.6-2e
Filter
By modifying the filter settings, you can control the timbre (tone) of the sound. The
type of filters in the SC-8850 are called Low Pass Filters, and allow only frequencies
lower than a specified frequency to pass. This frequency is called the Cutoff Frequen-
cy. By modifying the setting of the Cutoff Frequency you can make the sound bright-
er or darker. The Cutoff Frequency can change over time, controlled by the envelope.
By adjusting the filter and envelope settings, you can create sounds that have move-
ment and expression.
fig.6-3e
Parameters such as Vibrato,
Filter and Envelope can be
set not only for Parts, but
also for sounds (Instru-
ments). Sounds you create
by modifying these param-
eters are called
User
Instrument
, and can be
stored in the SC-8850 map
memory area (p.67).
Delay
Depth
Note On
Rate
Higher frequencies
Lower frequencies
Cutoff frequency
Low
pass
filter
