THE roar of the crowd! The thumping bass! The... tinny vocals? Open-air music festivals aren't exactly renowned for their balanced sound quality, but that could soon change, thanks to an audio-enhancing app for cellphones.
Jakob Eg Larsen and colleagues at the Technical University of Denmark, Kongens Lyngby, have developed a system that transforms your phone into a personal concert speaker, letting high-frequency sounds like vocals, which don't travel well over long distances, come through more clearly.
If you bring politics to this seed then you'd better make it genuinely relevant or it will be deleted.