CMD 420- Speech Science Lab 4 - Resonance 1. Use a common household container (think bottles) that qualify as a Helmholtz resonator (video from PP) and using your PRATT application find the F1 and F2 formants when producing sound. a. Include the description of your container including volume, size (height and circumference as well as neck height) and material. 2. Now, find a smaller or larger container and do the same calculations. 3. Compare the 2 containers in terms of the F1 and F2 values. 4. Present the data in a table. Volume Height Circumference Neck height Neck Circumference Material F1 F2 Container 1 591 ml 9 15.71 2 6.28 Plastic 189 Hz 1251Hz Container 2 200 ml 7.25 12.57 3.5 10.1 Glass 316 Hz 2502 Hz 5. Do you see any trends in your calculations? Think about size, material etc... 6. What theories do you have about trends that you find