The spelling of the surname "A P Martinich" can be explained using the International Phonetic Alphabet (IPA). The initial "A" is pronounced as /eɪ/, which is a diphthong sound that blends the vowel sounds of "ay" and "eh". The letter "P" is pronounced as /pi/, which is a voiceless bilabial plosive. The final segment "Martinich" is pronounced as /mɑːrtɪnɪtʃ/, with the stress on the second syllable. The "tch" sound represents a voiceless palatal affricate, which is a combination of /t/ and /ʃ/ sounds.