Method 1 is easy to understand, but entails a loss of precision. Method 3 has the advantage that it only involves two scales.
m ɛ θ ə d WORD_BOUNDARY w ʌ n WORD_BOUNDARY ɪ z WORD_BOUNDARY iː z i WORD_BOUNDARY t ʊ WORD_BOUNDARY ʌ n d ə ɹ s t æ n d WORD_BOUNDARY b ʌ t WORD_BOUNDARY ɛ n t eɪ l z WORD_BOUNDARY ʌ WORD_BOUNDARY l ɔ s WORD_BOUNDARY ʌ v WORD_BOUNDARY p ɹ ɪ s ɪ ʒ ə n WORD_BOUNDARY m ɛ θ ə d WORD_BOUNDARY θ ɹ iː WORD_BOUNDARY h ʌ z WORD_BOUNDARY ð ɪ WORD_BOUNDARY ʌ d v æ n t ɪ d̠ʒ WORD_BOUNDARY ð ʌ t ɪ t WORD_BOUNDARY oʊ n l i WORD_BOUNDARY ɪ n v ɑ l v z WORD_BOUNDARY t uː WORD_BOUNDARY s k eɪ l z WORD_BOUNDARY