How long has Glottal Enterprises been involved in the measurement of nasalance?
Glottal Enterprises has been marketing state-of-the-art aerodynamic measurement systems worldwide for over 30 years and has marketed systems for measuring nasalance since 1992. In the research lab of Glottal Enterprises’ founder Martin Rothenberg, nasalance was explored about 25 years ago in the development of speech communication aids for the hearing impaired (described in the article Optimizing Sensory Substitution, in the proceedings of Advances in Prosthetic Devices for the Deaf: A Technical Workshop, National Technical Institute for the Deaf, August, 1978). The experience in that research has also gone into our present products.
