Sony announced their drone business (Sony Airpeak) almost 2 years ago, but we have not heard any details since.
Sony is now trying to get a patent for noise-canceling drones:
"The drones are outfitted with speakers. Once the drones have been properly positioned, they use their audio capture abilities to process the ambient sound in a given area. The speakers equipped with the drones are then capable of creating audio signals that cancel the processed ambient noise resulting in virtual noise cancellation boundary… The ability to create a virtual noise barrier can be leveraged in many different ways and is sure to be widely implemented once the technology has matured enough."
Via Dronedj
