Oro Nasal Mask
Proprietary Pneumotach Technology
Voice 0transparent
circumferentially vented (CV) mask design

Soft and Flexible, Noninvasive,
Biocompatible, non-allergenic material
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Nasality Visualization
A Complete system for Nasometry
Noninvasively visualize and quantify
the effectiveness of velopharyngeal closure

USB operation with color-differentiated display.
Available in 3 configurations: Nasal Emission, Nasalance or complete
Nasality Visualization System
Who we are Founded by Dr. Martin Rothenberg, Glottal Enterprises, a Syracuse-NY based company, has been at the forefront of research and innovation in the field of voice measurement and speech research.

Dr. Martin Rothenberg, is Professor Emeritus of Electrical and Computer Engineering at Syracuse University where he directed the Speech Research Laboratory from 1966 to 1992. This laboratory specialized in research on the human voice and in the development of non-invasive techniques for the measurement of vocal function during speech and singing.

Dr. Rothenberg was a NDEA Title IV Fellow during his graduate studies at the University of Michigan, from 1960 to 1964. He was a Fulbright Senior Research Fellow in Sweden in 1980, studying the voice and speech patterns of children. In 1993 he received the Fifth Annual Quintana Voice Research Award of Achievement, awarded by The Voice Foundation. Dr. Rothenberg is the author of numerous papers related to the use of the human voice in speech and singing, and he holds four patents for speech-related measurement and training devices and systems.
What we can do for you If you are a researcher or an educator, Glottal offers the latest technology for accurate comprehensive measurements. Glottal's products bolster research or teaching efforts with respect to speech and voice.
Commitment to quality Glottal offers technical support over the lifespan of its products, and supports its workmanship and quality manufacturing processes with a one-year warranty.