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Guru
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Machine Hearing Plays Catch-Up

02/01/2007 9:52 AM

Machine vision has been at the forefront of machine learning, but now it's time for machine hearing. Admittedly not on a par with machine vision, machine hearing is making significant progress reports MIT's Technology Review. Routinely, advanced machine-listening systems utilize software to monitor upcoming equipment breakdowns, track movement, and activate cameras to record traffic accidents — all based on sound. In fact, an acoustics-based GPS system is being used in U.S. cities to detect/report gunshot locations; a sniper-fire detection system onboard an unmanned aircraft is also being developed for the U.S. Air Force.

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Join Date: May 2005
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#1

Re: Machine Hearing Plays Catch-Up

02/02/2007 2:27 PM

It is certainly reasonable that MIT should be a lead in this area, since they made major contributions to much of the underlying theoretical signal processing. As usual, the devil is in the details!

In the case of the acoustics-based GPS system, the simplistic triangulation discussion omits mention of the real problem - signal reflections, a bane of all detect&identify technologies in urban environments.

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#2

Re: Machine Hearing Plays Catch-Up

02/19/2007 11:36 AM

Routinely, advanced machine-listening systems utilize software to monitor upcoming equipment breakdowns

I believe typical machine listening systems are based on vibration or acoustic emissions, which require contact accelerometers on the device being 'listened' to. Are you refering to new technology where actual sound pressure, via microphones, is used to listen to machines?

regards

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