Otherwise put, the information about the signal is in its signal flanks, that is when the signal changes.
ʌ ð ə ɹ w aɪ z WORD_BOUNDARY p ʊ t WORD_BOUNDARY ð ɪ WORD_BOUNDARY ɪ n f ə ɹ m eɪ ʃ ə n WORD_BOUNDARY ʌ b aʊ t WORD_BOUNDARY ð ə WORD_BOUNDARY s ɪ ɡ n ə l WORD_BOUNDARY ɪ z WORD_BOUNDARY ɪ n WORD_BOUNDARY ɪ t s WORD_BOUNDARY s ɪ ɡ n ə l WORD_BOUNDARY f l æ ŋ k s WORD_BOUNDARY ð æ t WORD_BOUNDARY ɪ z WORD_BOUNDARY w ɛ n WORD_BOUNDARY ð ə WORD_BOUNDARY s ɪ ɡ n ə l WORD_BOUNDARY t̠ʃ eɪ n d̠ʒ ɪ z WORD_BOUNDARY