On Formants - Paperbackby Richard S. McGowan (Author) This book presents results in a study toward bringing acoustic and articulatory phonetics together for sonorant sounds, and, in particular, vowel production. Peter Ladefoged suggested proceeding in this project in his textbook, A Course in Phonetics. In acoustic phonetics the resonances, or formants, of the vocal the vocal tract is the primary way that vowels are characterized. In the present book, formants are examined