Feeds

Microsoft digs Doppler to effect gesture detection

Sound thinking

Top three mobile application threats

Microsoft Research took motion detection to new levels this week when it unveiled a new gesture recognition system for laptops.

Called SoundWave, the rig utilises the Doppler effect, picking up subtle changes in sound wave frequencies to calculate how a user's hand is moving in front of a laptop. It's said to work even in noisy environments.

SoundWave works by emitting an inaudible tone between 18 and 22kHz. As these waves reflect off an object, the frequency is changed slightly. The changes are detected by the computer's array of microphones.

SoundWave

Combined with the changes in a sound wave's amplitude, direction, speed and time variation, the system determines which gesture is being made.

While it is unlikely to have much effect from a distance - we'll keep using Kinect for that - SoundWave could come in handy for close-up computer gesturing.

Check out the demonstration video:

Seven Steps to Software Security

Whitepapers

Top three mobile application threats
Prevent sensitive data leakage over insecure channels or stolen mobile devices.
Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Boost IT visibility and business value
How building a great service catalog relieves pressure points and demonstrates the value of IT service management.
Designing a Defense for Mobile Applications
Learn about the various considerations for defending mobile applications - from the application architecture itself to the myriad testing technologies.
Build a business case: developing custom apps
Learn how to maximize the value of custom applications by accelerating and simplifying their development.