Atari XL

78
Period
The Ater! XL Handbook
Amplitude
Simple Wave
...
determines the pi tch of the sound, and the
amplitude determines the volume.
High and Low Frequencies
Large and S mall Amplitudes (Loud and Soft)
Not all sounds have the same shaped waves, and
this wave shape, or waveform, has a great effect on
the quality of the sound. The shape of the sound
waves produced by the XL looks like this: -
A Square Wave - as produced by the XL