Radio Shack MD-1700, Руководство пользователя

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23
Operation
tones. To create a “user” tone, you simply
select one of the keyboard’s preset tones,
change its parameters, then store the new
tone in any memory location from 200–231.
You select and use a user tone the same as
a preset tone.
Notes:
• You cannot use tones 192–199 (drum
set tones) as base tones.
• The preset tone you use as the basis for
a user tone is not changed.
• The tone locations 200–231 are not
empty (before you store user tones
there). They initially contain duplicate
versions of tone numbers 128–159. The
user tone you store in any of those loca-
tions replaces the existing tone. If you
delete a user tone, the keyboard auto-
matically restores the initial, duplicate
tone there.
Changeable parameters are divided into four
groups (see “Creating and Storing a User
Tone”).
• Tone Characteristic Waveform —
PCM Set
• Volume Characteristic — Amp Enve-
lope Set
• Tone Pitch — Pitch and Pitch Envelope
Set
• Tone Characteristic — Attack Rate,
Release Rate, Level, Touch Sensitivity,
Pan, Filter Sensitivity, Filter Level, and
Transpose
Understanding 1DCO and 2DCO
Tones
A Digital Controlled Oscillator (DCO) controls
the sound output of a digital signal. Some of
the keyboard’s built-in tones are simple
tones (1DCO), and some are layered tones
(2DCO). When you select a 2DCO tone as
the basis for creating a user tone, you need
to change the parameters of both tones.
When you select a layered tone,
dCo2
ap-
pears, indicating that you must set the pa-
rameters of both tones.
Creating and Storing a User Tone
Follow these steps to create and store your
own tone. (Refer to “Hints on Creating a User
Tone” on Page 25.)
Notes:
• A new or revised user tone replaces the
existing user tone.
• Layer, split, auto accompaniment, demo
tune play, auto harmonize, song
sequencer, pattern sequencer, and MIDI
functions are all disabled while the key-
board is in the Custom Tone Synthesizer
mode.
1. Select the preset tone (except 192–199)
you want to use as a basis for your user
tone.
2. Press
SYNTH
. SYNTH lights and DCO1
(simple tone) or DCO2 (layered tone)
appears.
Note: To cancel the save operation at
any time, press
SYNTH
or
TONE
twice.
3. Repeatedly press
6
or
7
to display
the parameter you want to change.
PCM Set (0 to 288) — Determines the
characteristic of a tone by changing its
digitally sampled waveform.
Amp Envelope Set (
Aenv
) (0 to 288)
— Selects the volume envelopes. Sam-
ples of the amp envelopes appear in a
graph near your keyboard’s right
speaker.