Boffins from the University of California, Riverside Bourns College of Engineering and the Russian Academy of Sciences have emerged from their smoke filled labs with a new speech recognition system based around a magnonic holographic memory device.
Pattern recognition focuses on finding patterns and regularities in data and in this case the input patterns are encoded into the phases of the input spin waves.
Spin waves are collective oscillations of spins in magnetic materials. Spin wave devices are advantageous over their optical counterparts because they are more scalable due to a shorter wavelength. Also, spin wave devices are compatible with conventional electronic devices and can be integrated within a chip.
The researchers built an eight-terminal device consisting of a magnetic matrix with micro-antennas to excite and detect the spin waves.
The experimental data they collected for several magnonic matrixes show unique output signatures correspond to specific phase patterns. The microantennas allow the researchers to generate and recognise any input phase pattern, a big advantage over existing practices.
It takes about 100 nanoseconds for recognition, which is the time required for spin waves to propagate and to create the interference pattern.
Holography is a technique based on the wave nature of light and is recognized as a future data storing technology. If it starts recognising your speech, there could be no end to what the technology can do. However I bet it cant identify a Kiwi accent.