The Sound Statement - Commodore 128D User Manual

TheSOUND
Statement
The SOUND statement is designed primarily for quick and easy
sound effects in your programs. You will learn a more intricate way of —-
playing complete musical arrangements with the other sound state- I >
ments later in this section.
D|R
The format for the SOUND statement is as follows:
SOUND VC, FREQ, DUR[, DIR[, MIN[, SV[, WF[, PW]]]]]
Here's what the parameters mean:
VC —SelectVoiCe1,2or3
FREQ—Set the FREQuency level of sound (0-65535)
—Set DURation of the sound (in 60ths of a second)
(0-32767)
—Set the DIRection in which the sound is incremented/
decremented
0 = Increment the frequency upward
1 = Decrement the frequency downward
2 = Oscillate the frequency up and down
—Select the MINimum frequency (0-65535) if the
sweep (DIR) is specified
—Choose the Step Value for the sweep (0-32767)
—Select the Wave Form (0-3)
0 = Triangle
1 = Sawtooth
2 = Variable Pulse
3 = White Noise
PW —Set the Pulse Width, the width of the' variable pulse
waveform
Note that the DIR, MIN, SV, WF and PW parameters are optional.
MIN
SV
WF
u
} I
) I
( j
130
USING C128 MODE—Sound and Music in C128 Mode
U
U