ITC Bridge Forum: Feedback Device Outline

[EVPDave]: This design came to me a month ago and I finally put the hardware together to try it. It is a simple feedback loop using both radio (RF) and light. I knew there would be a feedback sound but I was surprised to hear the distinctive RF feedback sound v.s. acoustical feedback. RF feedback has a hollow tone to it. The device is touchy to set up and is operated in a dark room. The photomultiplier tube I used is very sensitive to modulations of light. Out of a minute of distorted voices I could only understand one message and it's not that great. I will post a block diagram of the device after this post. "The Bausch and Lomb inceptor" Attachment: 121510thebauchandlombinceptor.mp3 (Downloaded 1561 times) [EVPDave]: Diagram of the device. Attached Image (viewed 603 times) :