nasometry
Pronunciation: nay-ZOM-eh-tree
An instrumental assessment technique that measures the acoustic correlates of nasal resonance during speech production.
Full Definition
Nasometry is an objective measurement technique used to assess nasal resonance by calculating the ratio of nasal to oral acoustic energy during speech production. The Nasometer device uses a sound separator plate positioned between the nose and mouth, with microphones recording acoustic signals from both cavities simultaneously. Results are expressed as nasalance scores, with normative values established for different speech tasks and age groups. Speech-language pathologists use nasometry to document resonance disorders, monitor treatment progress, and provide biofeedback during therapy sessions. This assessment is particularly valuable for evaluating velopharyngeal function in patients with cleft palate or other craniofacial anomalies.
Usage
Usage note: Typically capitalized when referring to the specific Nasometer device.
In Context
- "Nasometry results indicated elevated nasalance scores during oral speech tasks, confirming hypernasality." — Instrumental assessment report
- "The patient received biofeedback training using nasometry to improve resonance control." — Treatment documentation