> playing back my own audio with a delay Sounds like this device: https://www.google.com/search?q=ig+nobel+speech+jammer https://www.google.com/search?q=ig+nob

> playing back my own audio with a delay Sounds like this device: https://www.google.com/search?q=ig+nobel+speech+jammer https://www.google.com/search?q=ig+nobel+speech+jammer