The word "Atkeson" is a proper noun and its spelling is unique. To break down its pronunciation using IPA phonetic transcription, it would be /ætkəsən/. This means that the "a" is pronounced as "æ," the "t" is pronounced as "t," the "k" is pronounced as "k," the "e" is silent, the "s" is pronounced as "s," the "o" is silent, and the "n" is pronounced as "n." The spelling of "Atkeson" seems to have a mix of traditional English spelling and phonetic pronunciation.