Speech, Language, and Hearing Sciences
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Speech Physiology Lab
Laboratory Phone Number: (765) 494-6488
Location: Heavilon Hall B24
The Speech Physiology Laboratory is located in the basement of Heavilon Hall. The primary focus of research within the laboratory is normal and disordered motor control. Toward this end, the laboratory is equipped for making simultaneous recordings from the speech subsystems (respiratory, laryngeal, and articulatory) in order to examine how the components work together for speech production. Data is collected from both typical aging adults and individuals with disease.
Magnetometers and a Respitrace system are available for the collection of respiratory information. Circumferentially-vented pneumotachograph masks and a high-frequency pressure transducer (Glottal Enterprises) are used for the collection of oral airflow information. The oral airflow signal is inverse filtered to obtain an estimated glottal volume velocity waveform to allow examination of laryngeal aerodynamics. A pitot tube and low-frequency pressure transducer (Glottal Enterprises) are used to collect intraoral air pressure information. High quality microphones allow for the transduction of acoustic signals which are examined spectrally to assess the articulation. Filters and amplifiers are used for modification of the signals as they are collected. Oscilloscopes are used to monitor the signals as they are collected. MATLAB software and algorithms are used to measure the data. The lab is equipped with computer workstations for analysis of data.