In terms of phonetic transcription, the spelling of the word "Shepardson" would be /ˈʃɛpɚdsən/. The first part of the word, "Shep," is pronounced with a /ʃ/ sound like in "shoe" and an /ɛ/ sound like in "met." The second part, "ard," is pronounced with an /ɚ/ sound like in "her" and a /d/ sound like in "dog." The final part, "son," is pronounced with a /s/ sound like in "salt" and an /ən/ sound like in "button." Overall, the word "Shepardson" is spelled phonetically to reflect the sounds that make up the word.