Port's Speech Dynamics Display

 This set of images was developed by me during my first year of teaching phonetics (at Brooklyn College in 1975). Their purpose is to help you think about the coordination and overlap of speech gestures.  Number 1 shows the tongue body motions in two dimensions (high-low and front-back).  Number 2 shows glottal aperture during breathing, the production of voicing and for a glottal stop. The general rule is that articulators are shown down for open and up for closed.  Number 3 shows glottal aperture, velum aperture and the tongue tip (or apex) in parallel during production of the words shown in transcription above.  Page 2 shows more examples and page 3 displays a summary of the phonetic theory employed. Page 4 contains some examples for you to practice with.