That reminds me of the "speech jammer", which won an Ignobel Prize last decade. It's an acoustic gun that combines a directional microphone and speaker array wi

That reminds me of the "speech jammer", which won an Ignobel Prize last decade. It's an acoustic gun that combines a directional microphone and speaker array with a delay, tripping up the speaker. https://www.cbsnews.com/news/shut-up-speech-jammer-among-2012-ig-nobel-winners/ https://www.cbsnews.com/news/shut-up-speech-jammer-among-201...