Frequency
GuardRFID Releases Low Cost Proximity Tag Exciter
Guard RFID Solutions Inc. announced today that it had released a new device that enables detection of tagged people or assets within a confined area or at close range. This device is suitable for applications that require room-level or bed-level location capability in hospitals, for example. The Proximity Tag Exciter (PTE) creates a tag capture zone whose radius can be adjusted precisely to fit the application’s tag detection range requirements.
Retrieving Sound From Vibrations Captured on Video
Researchers at MIT, Microsoft, and Adobe have developed an algorithm that can reconstruct an audio signal by analyzing minute vibrations of objects depicted in video. In one set of experiments, they were able to recover intelligible speech from the vibrations of a potato-chip bag photographed from 15 feet away through soundproof glass. In other experiments, they extracted useful audio signals from videos of aluminum foil, the surface of a glass of water, and even the leaves of a potted plant.