The spelling of "Andrew Brown" can be explained using the International Phonetic Alphabet (IPA). The first name "Andrew" can be broken down into /æn.drʊ/ with the schwa sound in the first syllable and the "dr" consonant cluster in the second syllable. The last name "Brown" can be written as /braʊn/ with the diphthong "ou" in the first syllable and the "n" consonant in the second syllable. So, to spell "Andrew Brown" correctly, one must remember the distinctive pronunciation of each letter and sound in the IPA transcription.