The Programmable Sound Generator (PSG) is able to output three separate sound channels (named Channel A, B and C). Each channel can be used to output tones and/or white noise.
== Input Clock Speed Frequency ==
The PSG is driven by an external clock at 1MHz provided by the [[Gate Array]]. The AY chip has an internal clock divider by 8 which means that it works internally at 125KHz, outputting 125,000 samples per second for each channel.