Which of the following is NOT a type of speech sound disorder?

Hyponasality is not classified as a type of speech sound disorder. Instead, it refers to a specific resonance issue where there is insufficient nasal airflow during speech, leading to a nasal quality that is underemphasized. This condition can affect the quality of vocal speech sounds but does not fall under the umbrella of speech sound disorders, which typically pertain to the production of individual speech sounds.

On the other hand, articulation refers to the physical production of speech sounds and can involve issues such as substitutions, omissions, and distortions. Dysarthria is a motor speech disorder resulting from neurological conditions that affect the muscles used for speech, leading to slurred or slow speech that can be difficult to understand. Apraxia of Speech is another motor speech disorder that involves difficulty planning and coordinating the movements needed for speech, leading to errors in speech sound production. Each of these disorders directly affects the ability to produce speech sounds accurately, which is a defining characteristic of speech sound disorders.