The Centre for Speech Technology Research, The university of Edinburgh


Various systems exist to measure the egressive (and ingressive)airflow (airpressure) from the oral and nasal cavities.

The SNORS system (super Nasal Oral Ratiometry System) is a clinical tool with a similar purpose to the nasometer.

Department of Electronics,
University of Kent

The Rothenberg system provides masks for adults and children but there is no anaysis software supplied.

Glottal Enterprises
1201 E. Fayette Street
New york 13210-1953
Tel: (315) 442-1213
Fax: (315) 422-1216

The Physiologia system again uses both oral add nasal airflow transducers. The oral airflow rate is measured by a grid pneumotachograph (PTG) with a low dead volume, good linearity, and a wide range on 6 scales: 5, 2, 1, 0.5, 0.2, and 0.1 dm3 per second (or liters/second). The interface between the subject's face and the transducer is achieved via flexible silicone rubber mouthpiece.The nasal airflow transducer is identical to the buccal airflow transducer. its location and shape were designed to guarantee maximum nasal air evacuation and measurement accuracy. The nasal airflow rate is measured in the nostrils using silicone nosepieces of various sizes. The measurement scales and ranges are the same as for the oral airflow transducer.
Laboratoire Parole et Langage

Research unit UMR 6057 of the CNRS
Centre National de la Recherche Scientifique
Université de Provence
 29 Av. Robert Schuman
13621 Aix en Provence Cedex 1