Speechskript is a system for phonetically spelling words in the English language. It is simple and intuitive. For each meaningful sound in the English language there is one Speechskript symbol, and for each Speechskript symbol there is one meaningful sound. The word "meaningful" is important. Not everybody pronounces their vowels the same way. There are many regional variations. But these variations aren't "meaningful". They don't change the meaning of the words. Speechskript isn't concerned with these different flavors of sound. Speechskript is only concerned with communication.
Speechskript recognizes 36 meaningful speech sounds. However our alphabet has only 26 letters in it. Speechskript resolves this supply-and-demand problem by representing some sounds with two-letter symbols. These digraphs eliminate the need for inventing new symbols.