SPPA 4030 Speech Science1 Instructor: Stephen Tasko

SPPA 4030 Speech Science2 Speech science investigates the fundamental questions pertaining to how speech is produced and how it is perceived (Kent, 1997).

SPPA 4030 Speech Science3 The Speech Chain (Denes & Pinson, 1993)

SPPA 4030 Speech Science4 Our primary focus (Denes & Pinson, 1993)

SPPA 4030 Speech Science5 Speech production may be described as the systematic regulation of air pressures and flows within the lungs and vocal tract

SPPA 4030 Speech Science6 Why study speech science?  Critical information is embedded in the speech signal  Phonetic information  Affective information  Personal information  Transmittal information  Diagnostic information

SPPA 4030 Speech Science7 Branches of physics and speech science  Acoustics Physics of sound  Aerodynamics Physics of air volumes, flows and pressures  Kinematics Physics of movement (displacement, velocity and acceleration) w/o regard to cause of movement  Dynamics Physics that deals with understanding the forces that underlie movement

SPPA 4030 Speech Science8 Examples

SPPA 4030 Speech Science9 Biology and speech science  Electrophysiology Measuring electrical activity of the body  Muscle activity (electromyography or EMG)  Peripheral nerve activity (neurography)  Central nervous system activity (e.g. electroencephalography or EEG)  Neuroimaging Magnetic Resonanc Imaging (MRI) Positron Emission Tomography (PET)  Molecular Biology Ultrastructure of the speech apparatus

SPPA 4030 Speech Science10 Measuring the activity of our muscles (electromyography or EMG)

SPPA 4030 Speech Science11 Measuring the activity of our brain (a variety of techniques)