Casio VL-Tone VL-1 Operation Manual page 24

How To Set And Use
1. Let's form an 8 digit number to create a sound.
In the following paragraphs the numbers 0 to 9 will be used to
determine the sound to be created. 8 numbers must be set in
sequence.
a. Sound Waves — The following fundamental sound wave vari-
ations are available.
0 = Piano 4 = Guitar 1
1 = Fantasy 5 = Guitar 2
2 = Violin 6 = English Horn
3 = Flute 7 = Electro-Sound 1
* for the items b through f on the right, the greater the number value
(0-9) the greater the effect on the values illustrated on the graph.
b. Attack Time
c. Decay Time
d. Sustain Level
e. Sustain Time
f. Release Time
8 = Electro-Sound 2
9 = Electro-Sound 3
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REFERENCES
b — A small value of b creates a fast rise time making a sharp sound.
c, d and e — A large value of c, d and e creates a sound of long
duration such as that of a flute or organ.
Smaller numbers create sounds of shorter duration such as that of a
guitar or koto.
f — A large value of f causes an echo effect even after you release
the key.
TIME (DURATION)