phonetic reversal

Phonetic reversal is the of reversing the phonemes or phones of a word or phrase. When the reversal is identical to the original, the word or phrase is called a phonetic palindrome. Phonetic reversal is not entirely identical to backmasking, which is specifically the reversal of recorded sound. This is because pronunciation in speech causes a reversed diphthong to sound different in either direction (e.g. eye becoming yah ), or differently articulate a consonant depending on where it lies in a word, hence creating an imperfect reversal.