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'PrivacyMic': For a smart speaker that doesn't eavesdrop


‘PrivacyMic’: For a smart speaker that doesn’t eavesdrop
Microphones are perhaps the most common electronic sensor in the world, with an estimated 320 million listening for our commands in the world’s smart speakers. The trouble is that they’re capable of hearing everything else, too.
But now, a team of University of Michigan researchers has developed a system that can inform a smart home or listen for the signal that would turn on a smart speaker without eavesdropping on audible sound.
The key to the device, called PrivacyMic, is ultrasonic sound at frequencies above the range of human hearing. Running dishwashers, computer monitors, even finger snaps, all generate ultrasonic sounds, which have a frequency of 20 kilohertz or higher. We can’t hear them but dogs, cats and PrivacyMic can. ....

United States , Yasha Iravantchi , Mayank Goel , Karan Ahuja , Chris Harrison , Carnegie Mellon University , Um Office Of Technology , University Of Michigan , Alanson Sample , Raspberry Pi Based , Yum Office , Utilizing Inaudible Frequencies , Privacy Preserving Daily Activity Recognition , Human Factors , Carnegie Mellon , ஒன்றுபட்டது மாநிலங்களில் , மயங்க் கோயல் , கரண் அஹுஜா , கிறிஸ் ஹாரிசன் , கார்னகி மெலந் பல்கலைக்கழகம் , உம் அலுவலகம் ஆஃப் தொழில்நுட்பம் , பல்கலைக்கழகம் ஆஃப் மிச்சிகன் , ர்யாஸ்‌பெரீ பி அடிப்படையிலானது , உம் அலுவலகம் , மனிதன் காரணிகள் , கார்னகி மெலந் ,