‘Audio Zoom’ Isolates Single Conversations In Mass Crowds

Physicists Morgan Kjølerbakken and Vibeke Jahr have created a ‘virtual microphone’ which can isolate and amplify conversations in a crowd.

Physicists Morgan Kjølerbakken and Vibeke Jahr of Squarehead Technology have created a ‘virtual microphone’ which can isolate and amplify conversations in a mass crowd or stadium.

Comprising of three-hundred microphones hung above a stadium working alongside a fixed wide-angle camera, the ‘AudioScope’ is capable of zooming in on any spot below, capturing sound and video.  According to NewScientist information is then sent to the specially-designed software which utilizes signal processing algorithms to

“calculate the time it would take for sound emanating from that point to reach each microphone in the circular array, and digitally corrects each audio feed to synchronise them with that spot.”

Coaches, referees and players on field will now be fully-accountable for even the faintest murmur.  The video below shows the incredible detail picked up, including the tiny pop of bubblegum in a packed basketball stadium;

Squarehead Technology

NewScientist: “Audio zoom picks out lone voice in the crowd”

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