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Cool stuff, how many more years before acoustic "private zones" will become reality?

502 Views 5 Replies 3 Participants Last post by A9X-308, Feb 19, 2014

mtbdudex

Discussion Starter · Feb 12, 2014

Neat article, "Engineers build first nonreciprocal acoustic circulator: A one-way sound device"
http://phys.org/news/2014-01-nonreciprocal-acoustic-circulator-one-way-device.html

Quote:
A circulator for sound. The arrows represent acoustic signals flowing through the device (diameter: ~20 centimeters), which circulates sound in a nonreciprocal fashion: Signals can flow from left to top, from top to right, and from right to left, but not in the opposite directions. This creates one-way communication channels for sound, allowing listeners to hear but not be heard in return. Credit: Erik Zumalt, Cockrell School of Engineering, UT Austin.

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arnyk

· #2 · Feb 12, 2014

Quote:
Originally Posted by mtbdudex /t/1517425/cool-stuff-how-many-more...ivate-zones-will-become-reality#post_24346447

Neat article, "Engineers build first nonreciprocal acoustic circulator: A one-way sound device"
http://phys.org/news/2014-01-nonreciprocal-acoustic-circulator-one-way-device.html

Quote:
A circulator for sound. The arrows represent acoustic signals flowing through the device (diameter: ~20 centimeters), which circulates sound in a nonreciprocal fashion: Signals can flow from left to top, from top to right, and from right to left, but not in the opposite directions. This creates one-way communication channels for sound, allowing listeners to hear but not be heard in return. Credit: Erik Zumalt, Cockrell School of Engineering, UT Austin.

Click to expand...

Reading between the lines, it appears that like the microwave equivalent, t it is not a broad band device by audio standards. In microwaves a device that functions over a tiny fraction of an octave is considered to be relatively broadbanded. According to most authorities, the normal audio band is about 10 octaves.

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mtbdudex

Discussion Starter · #3 · Feb 18, 2014

So they focus on the vocal range 100-8k hz freq first?

or even just specific note freq and test/expand capability?

Maybe when I retire in 12 years this will be possible....

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A9X-308

· #4 · Feb 18, 2014

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mtbdudex

Discussion Starter · #5 · Feb 19, 2014

A9X-308, I found the article from facebook audyssey tech talk group page https://www.facebook.com/groups/audysseytechtalk/

and I posted there....

Being I grew up in the 70's totally remember Get Smart.

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A9X-308

· #6 · Feb 19, 2014

My feeling is it will work about as well.

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