Control of phonation or voice and the vocal mechanism. Control of extremes and variations in pitch 3. Control of extremes and variations in volume 4. The first year cont. Quasi-resonant nucleus stage cont.
Productions are acoustically similar to back vowels or to syllables consisting of back consonants.
Period of vocal play during which the infant seems to delight in exploring the capabilities of the vocal tract. Later become CV or VC syllables. Vocalizations more fully resonated, but not yet distinguishable as specific vowels. Experimentation with pitch and volume extremes occurs here.