Level 1 Cannot sustain phonation. This speech sample demonstrates the inability to control pitch. Fluctuations or breaks appear to cover almost the full range of audible tone generation.

The speakers voice is rated on a five-point scale indicating the degree ... of breathiness and further distort respiration and phrasing during continuous speech. Pitch register is moderately high.

Further research has investigated the training of AP and how it can ... different types of sound production, such as voice or instruments. Pitch Height: The perceived frequency of a sound, which ...