The spelling of the word "Baisden" can be explained using the International Phonetic Alphabet (IPA) phonetic transcription system. The initial "b" is pronounced using the voiced bilabial plosive /b/, followed by the long vowel "ai" pronounced as /eɪ/. The "s" is voiced and pronounced as /z/, and the following "d" is pronounced using the voiced alveolar stop /d/. Finally, the "en" is pronounced using the vowel sound /ən/. Therefore, the complete IPA transcription of "Baisden" is /beɪzdən/.