The Wave electromagnetic articulograph speech research system measures the 3D position of micro sensors attached to the tongue, palate, lips and face for tracking orofacial movements. The resulting measurement data can be applied in the research of apraxia of speech, dysarthria, oral myofunctional disorders, and other speech-related pathologies.
The Wave can simultaneously track up to 16 disposable sensors in five degrees of freedom (5DOF); up to 8 sensors in 6DOF. Measurements are captured in real time without requiring a line of sight between the system and subject. Two subjects can be tracked at once, allowing for the study of dyadic communication, with the results displayed side-by-side in the software interface. High temporal accuracy and spatial resolution ensure the fastest and most subtle of movements are recorded.
Electromagnetic Articulography: measuring movements of the tongue, jaws and lips during speech
As an additional option, the Wave Speech Research System can be spatially and temporally synchronized with the Optotrak Certus and 3D Investigator motion capture systems to enable greater power and flexibility within research applications. Integrating a Northern Digital Inc. motion capture system offers the following benefits:
For more information, download our product brochure.
The Wave system includes the NDI WaveFront software for collecting and processing measurement data. Software features include:
Real-Time Application Development Software is also available, which includes an integrated TCP/IP server for real-time data streaming to third-party clients, and gives users the ability to create start/stop trigger commands from third-party clients.
|Static positional accuracy||0.6 mm RMS|
|Static angular accuracy||0.2 degrees RMS|
|Dynamic positional accuracy||1.5 mm RMS|
|Dynamic angular accuracy||0.6 degrees RMS|
|Number of sensors tracked simultaneously||8 – using 8 channel system; 16 – with extension package|
|Sample Frequency||100 Hz (Standard)
200 Hz, 400 Hz (Optimal)
|Dimensions (H x W x D)||200 mm x 200 mm x 80 mm|
|System Control Unit|
|Dimensions (H x W x D)||88 mm x 235 mm x 295 mm|
|Sensor Interface Unit|
|Dimensions (H x W x D)||32 mm x 50 mm x 90 mm|
The following options are available for use with the Wave Speech Research System.
Unique Sensors in Variable Styles
Different sensors are available to meet the unique needs of each application. Features of the various sensor options include: