The Sound Statement - Commodore 128 System Manual

THE SOUND 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 statements later in this section.
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 — Select VoiCe 1, 2 or 3
FREQ — Set the FREQuency level of sound (0-65535)
DUR — Set DURation of the sound (in sixtieths of a
DIR — Set the DIRection in which the sound is
MIN — Select the MINimum frequency (0-65535) if the
SV — Choose the Step Value for the sweep (0-32767)
WF — Select the WaveForm (0-3)
PW — Set the Pulse Width, the width of the variable
Note that the DIR, MIN, SV, WF and PW parameters are optional.
7-4
second)
incremented/decremented
0 = Increment the frequency upward
1 = Decrement the frequency downward
2 = Oscillate the frequency up and down
sweep (DIR) is specified
0 = Triangle
1 = Sawtooth
2 = Variable Pulse (Square)
3 = White Noise
pulse waveform