2 ms·
The International Phonetic Alphabet might be a good contender. There’s no periodicity, but the columns for the consonants roughly represent place of articulatio
by Xophmeister 3y ago
The International Phonetic Alphabet might be a good contender. There’s no periodicity, but the columns for the consonants roughly represent place of articulation. The spacial arrangement of vowels is even closer to where in the mouth the sound is formed.