Less than a month ago, Sony got a patent for noise-cancelling drones to create havens of quiet in otherwise loud areas. Sony’s patent sought to enable a means of having a virtual noise cancellation barrier through a networked system of drones. The drones would be equipped with the necessary audio equipment needed to cancel out the ambient noise of the environment and provide the users within the virtual barrier a noise-free zone.
Now GoPro has now obtained a patent for its own for racket-suppression tech. GoPro’s patent application involves a microphone that feeds noises emitted by the drone’s various parts into an audio signal filter. Those operational condition input parameters – aka clatter – serve as the craft’s sonic baseline while in flight. The audio signal filter then uses that to replicate the work of a Hollywood sound track mixer by measuring the strength of different sounds. Once it has, the system pivots to do the exact opposite of what that Hollywood mixer does: rather than balancing those, it offsets the entire ensemble into merciful, enduring silence allowing ambient audio to come through.
Interestingly, the DroneDJ site states that the tech also allows pilots themselves to intervene and tweak parameters so that any additional, perhaps unexpected sound can be suppressed – or permitted through if automatically cancelled – according to their preferences.
Meaning you can choose whether to listen in on that crowd conversation or just cut them out altogether…