The two most common types of modern hearing aids are "behind the ear aids" and "in the ear aids".
ð ə WORD_BOUNDARY t uː WORD_BOUNDARY m oʊ s t WORD_BOUNDARY k ɑ m ə n WORD_BOUNDARY t aɪ p s WORD_BOUNDARY ʌ v WORD_BOUNDARY m ɑ d ə ɹ n WORD_BOUNDARY h ɪ ɹ ɪ ŋ WORD_BOUNDARY eɪ d z WORD_BOUNDARY ɑ ɹ WORD_BOUNDARY b ɪ h aɪ n d WORD_BOUNDARY ð ɪ WORD_BOUNDARY ɪ ɹ WORD_BOUNDARY eɪ d z WORD_BOUNDARY æ n d WORD_BOUNDARY ɪ n ð ɪ WORD_BOUNDARY ɪ ɹ WORD_BOUNDARY eɪ d z WORD_BOUNDARY