Henry Sweet,
1911 Encyclopædia Britannica
(1911)
“ But how the ear transmits to the brain the impression of sound is still a mystery. Again, although the mechanism of the vowel is clear enough, there is still no generally received acoustic theory of its formation. In fact, from the physical science point of view there is as yet no science of phonetics. The real function of phonetics is philological and literary. The only sound basis of a theoretical knowledge of phonetics is the practical mastery of a limited number of sounds—that is to say, of the sounds which are already familiar to the learner in his own language. ”
