The correct spelling of the name "Stephan Roll" can be explained using the International Phonetic Alphabet (IPA) transcription. The first syllable of "Stephan" is pronounced /stɛfɑn/ with the "e" sound as in "pet" and the "a" sound as in "father". The second syllable of "Roll" is pronounced /roʊl/ with the long "o" as in "go" and the "l" sound. Therefore, the correct spelling of this name is "Stephan Roll" pronounced /stɛfɑn roʊl/. It's important to have proper spelling and pronunciation to avoid any misunderstandings or errors.