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Towards a wireless multimodal speech capture system

People suffering from speech disorders cannot produce comprehensible speech. Particularly, motor speech disorders affect the ability to control and synchronize articulators, such as tongue, lips, and jaw, which are responsible for speech production. Typically, people suffering from such disorders undergo speech therapy, led by speech-language pathologists (SLPs), in which they may be asked to repeat a set of utterances. Speech performance is assessed and errors are corrected by the SLP via attempts to adjust the articulators' motion for the errant sounds. However, in order to provide accurate feedback, SLPs must be able to monitor and analyze articulators' movements. Currently, available speech articulator tracking systems are not suitable for use in the SLPs' private practices as they either prevent natural speech, are costly, bulky, or too complex to setup and/or calibrate for each therapy session. The system presented here uses off-the-shelf components and captures three important speech modalities: tongue movements, voice, and lip gestures simultaneously and unobtrusively, thus presents a potentially suitable solution for SLPs and their patients in their daily routines as it is noninvasive, wireless, low cost, low maintenance, portable, and plug-and-play.