person:oona räisänen

Mystery signal ?
▻http://www.windytan.com/2014/02/mystery-signal-from-helicopter.html
Oona Räisänen is the queen of impromptu signal processing.

http://3.bp.blogspot.com/-Fr-g6fxLWII/Uuy_45qhaYI/AAAAAAAADIg/j8RJAjyt9Qg/s1600/bitteja.png