The matrix Formant Display can be used in two ways. In the Practice format, the goal is to match the model pattern. The model and trial appear on the screen simultaneously for easy analysis of similarities and differences, with "instant replay" for review as needed. With click of your mouse, you can change models "on-the-spot" to let individuals practice against their own voice patterns.

The other matrix display format, Gobble, is an "eat-the-dots" style game that takes the boredom out of drill work and encourages repeated production of targets. Its live feedback also stimulates vocal play and helps speakers find and maintain appropriate articulator positions for vowel and other sound production.