The name "Arnalda" is spelled with the phonetic transcription /ɑrˈnɑːldə/. The first vowel sound is a low back vowel /ɑ/, followed by the consonant cluster /rn/. The second vowel sound is a long vowel /ɑ:/, and the final syllable ends with the consonant cluster /ld/. The "a" in the final syllable is reduced to the schwa sound /ə/. Overall, the spelling reflects the pronunciation of the name with accuracy.