The University of Illinois has developed a technology to optimize the operation of typical noise reduction systems in headphones. It is not suitable for mobile solutions, but it has excellent prospects for implementation in a “smart office”. Plus literally blocks other people's ears from access to confidential information.
Existing noise reduction systems read incoming spurious sound and generate an identical sound wave, but in antiphase, so that they mutually suppress each other. The problem is that the microphone for noise trapping is right in the headphones, because of this the system response time is minimal and sometimes failures occur. But what if we just take and take the microphone away, say, to the front door of the cabinet where the user is sitting?
Wireless communication is a million times faster than an acoustic signal – after receiving a signal from a microphone, the system has a huge time to analyze it and generate an ideal lock. Or only a partial lock, if the information is important – you can screen out the office rumble, but miss the commands of the authorities. Studies have shown that in this case it will be possible to do with small earbuds. If necessary, microphones can be made without a drive, with direct signal transmission to the headphones, to exclude the possibility of secret recording of sound.
And microphones can be put in all corners of the “smart office” and generate personal signals for all employees when they move around the room. And to differentiate the access rights so that the person with the guest headset is guaranteed not to hear anything, except for a lot of noise, even if he purposely tries to find something out. True, he can just take off the headphones, but for such cases there is a guard with batons.js.src = “&version=v2.8”; 'script', 'facebook-jssdk'));