Delayed echo

The model for demonstration of the delayed echo.

The device consists of two microphones and headphones freely suspended on a metal stand. Voices speaking into the microphone and hear in the earpiece is electronically delayed with a delay of 1/5 seconds. The model demonstrates the acoustic phenomena of delayed feedback (echo). Delay sometimes makes speaking intelligibly impossible as a feedback mechanism is affected by a delay. 

Material: metal, wood, electronic module and wiring delays

Power supply: 100 W / 220 V

Dimensions (cm): 85 x 90 x 70