Study of human hand claps finds Helmholtz resonators to be a good model for the dominant sound generation mechanism & for physically separating factors contributing to different aspects of the sound. doi.org/10.1103/Phys...

Using time reversal to focus transient acoustic waves & extinguish a flame! To extinguish a candle flame in the middle of a room requires 191 dB & extinguishes the flame by causing acoustic streaming at the flame location www.nature.com/articles/s41...