I listened recently to a very interesting interview with Professor Trevor Cox about the longest echo ever recorded, and other acoustic topics. Near the end of the interview (around 42:44), Professor Cox mentioned that he was still looking for “the most repetitive echo” — the place where you can shout “ECHO!” and hear “Echo! Echo, echo, …” repeated the greatest number of times.
This prompted me to write an email to the radio programme about how one might generate such a repetitive echo. Then, I decided that it might be worth putting the email here, for you to read. So what follows is a slightly edited version of that email, with added pictures. Continue reading The most repetitive echo