PURPOSE: To illustrate edge tones and the factors that effect their sound.
DESCRIPTION: Compressed air is blown out a slit onto the point of a wedge-shaped barrier. The wedge can be positioned with respect to the slit and the air flow can be regulated to produce controllable edge tones.
REFERENCES: (PIRA unavailable.) See Demonstration Reference File for description of apparatus by its inventors.
EQUIPMENT: Edge tone generator with micromanipulator, compressed air supply.
SETUP TIME: 5 min.
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