The name "John McCarthy" is spelled /dʒɑn məˈkɑrθi/ in IPA phonetic transcription. The first name "John" is pronounced as "dʒɑn" which has a 'j' sound, followed by "mə" for the second syllable. The last name "McCarthy" is pronounced as "məˈkɑrθi" which features a silent 'c' and 'h', with an emphasis on the second syllable. Understanding the IPA phonetic transcription can help us accurately pronounce names and words, making communication clearer and more effective.