Partition-based handle	Use of partition-based handle

Glottal Enterprises can now supply a separator-style measurement handle that is interchangeable with the dual-chamber Oronasal Mask for measuring Nasalance.  A main-screen selector on the latest version of SpeechTutor enables the user to change instantly between a mask and a partition. Owners of older versions of Speech Tutor can upgrade their software free of charge when purchasing a partition-style handle.

For SpeechTutor users who are interested in tracking only vowel Nasalance, and not Nasal Emission in consonants, Glottal Enterprises can now supply a separator-style measurement handle that is interchangeable with the dual-chamber oronasal mask.  For researchers interested in making comparisons, this comfortable, hand-held separator offers a measurement solution comparable to that of some competing systems for measuring Nasalance.  A main-screen selector on the latest version of NVS enables the user to change instantly beween a mask and a partition.  Owners of older versions of SpeechTutor can upgrade their software free of charge when purchasing a partition-style handle.  Contact us if you would like more information about this option.

Advantages of the dual-chamber mask

• Allows measurement of both Nasalance and Nasal Emission.
• Readings are more independent of sensor orientation than with a partition.
• Better rejection of ambient sounds.

Advantages of the NVS partition handle for measuring Nasalance

• The separator is not strapped to the head, as is the case with competitive systems.  More easily accepted by children and used in the home for practice.
• The removable separator plates are easily changed by the clinician or the user, to better fit the user’s face. A correct fit means repeatable nasalance readings with a minimum pressure on the upper lip.

The removable plates can be easily washed in a dishwasher or by hand, or sterilized by standard methods for critical hospital environments.

This comfortable hand-held partition handle offers a measurement solution with a number of advantages compared to competing systems for measuring Nasalance.

• The separator is not strapped to the head, as is the case with competitive systems, and is easily taken on and off the face.
• The separator plates are easily changed by the clinician or the user, for cleaning or to better fit the user’s face.
• Separator plates are supplied in three standard sizes with the unit to accommodate almost all maxillary anatomies, and custom-made plates can be supplied for unusual curvatures of the anterior maxilla.
• A correct fit for the separator assures accurate and repeatable nasalance readings with a minimum pressure on the upper lip.
• Multiple separator plates can be purchased and individualized for each client.  The plates can also be painted to identify the user or to make them more attractive to young children
• Plates can be easily washed in a dishwasher or by hand, or sterilized by standard methods for critical hospital environments.
• The larger separator plate and better customized fit result in a greater and more consistent separation of oral and nasal sounds
• Factory calibrated.  No need for field calibration.