Pneumotach (CV) Masks

MA-1L CV Pneumotach Mask

Minimizing mask-induced voice distortion and muffling and extending the frequency response of airflow recordings are key reasons to choose our circumferentially-vented (CV) pneumotach masks. The innovative CV design is now widely recognized as far superior in voice airflow measurement to older, closed-mask designs borrowed from the field of respiratory measurement. The Glottal Enterprises PTL or PTW transducers fit into convenient openings in the masks, for airflow or intraoral pressure measurements, and when using the dual chamber masks, nasal flow can also be measured using a transducer mounted in the mask handle. Other pressure transducers can be easily adapted for use with any of our pneumotach masks.

Ergonomically designed handles are shaped and positioned to allow masks to be held in place easily and securely.  No straps are needed for most applications.

OPA Oral Pressure Adapter

The OPA adapter permits a PTW or PTL pressure transducer to be used to measure intraoral pressure during biabial consonants by coupling the transducer though the lips at the corner of the mouth. The adapter seats firmly in the hole provided for this purpose in any of the Glottal Enterprises MA-series CV masks. It is easily cleanable and the polyethylene tube that passes through the lips is easily replaceable with tubing available at any hardware store.

H-1 Mask Handle

The H-1 handle is used with any MA-series mask. The solid aluminum handgrip provides a firm handhold in a position designed to hold the mask firmly on the face. The H-1 is easily removable while changing masks or for cleaning, and can be cleaned with soap and water or sterilized by any standard method.

The OroNasal Dual-Chamber Mask System

The unique OroNasal mask has long been a preferred device of clinics, hospitals and research centers for measuring voice-air inflow with high fidelity and minimal speech distortion. The Speech Tutor pitch and nasality training system uses the OroNasal mask for speech input.

S/T-MA1 - Adult Mask	S/T-MC1 - Child Mask	Seen here is a close-up of the division between the oral and nasal section of the mask.
The unique dual-chamber OroNasal mask is used widely in clinics, hospitals and research centers for measuring separated oral and nasal airflow with high fidelity and minimal speech distortion. The Speech Tutor pitch and nasality training system uses the OroNasal mask for speech input, as does the new Nasality Monitor program, in which both vowel nasalance and the nasal emission of air during consonants is to be recorded and displayed.

O/N-H1 Oronasal Mask Handle

Seen here is the O/N-H1 Mask handle. It is a handle with no electronics in it, and is used with the S/T-MA1 and S/T-MC1 masks when taking pressure readings with Glottal Enterprises Pressure Transducers.

What's so special about the OroNasal mask?

Everything! The OroNasal mask is...

Soft and flexible. Fitting comfortably over nose and mouth; the OroNasal mask is well suited for long periods of use, and is easy for children to accept.

Innovative and accurate. The Oronasal mask is based on the clinically proven Glottal Enterprises voice-transparent circumferentially vented (CV) mask design.  With the CV design, voice muffling is reduced to close to the minimum necessary for speech airflow measurement. Convenient in the clinic or at home for speech measurement, the OroNasal mask can have transducers and electronics conveniently built into the handle. 

The OroNasal mask fits over both nose and mouth and separates oral and nasal airflows. Proprietary pneumotach technology, reduces cross- leakage of sound between nasal and oral transducers. When measuring vowel nasalance, the mask design is less susceptible to ambient noise than is a dual microphone approach and yields a nasalance measurement that is not dependent on microphone position and orientation.

Non-invasive. The OroNasal mask can be used to measure nasality in both vowels and without probes inserted in the mouth or nose.

User-controlled. The mask works without the uncomfortable, awkward head straps or harnesses used in some competing systems. The student simply holds the mask in place when ready to use it.  Interruptions that occur during practice are easily accommodated.