My question is whether it's tuned to a specific frequency or not... In the video, they were outputting a frequency which sounded pretty much like a single tone. Building a device with this behavior to a single tone seems to be trivial in comparison to a device which would block a wide range of frequencies. For instance one could build a device which effectively delayed the sound by a 1/2 wavelength which would cancel the remaining sound out.
So: if this is a single-frequency device, I'm not extremely impressed. Oh, I guess it might cancel harmonics as well.... If instead it cancels a wide range of frequencies it's much more useful and interesting. Even if it is a single frequency device, there are probably some applications, just not as many if it is truly a wideband "muffler". On Wed, Mar 13, 2019 at 9:22 PM Chuck McCown <ch...@wbmfg.com> wrote: > > Interesting, it acts like an open circuit quarter wave stub. > > From: Sean Heskett > Sent: Wednesday, March 13, 2019 9:02 PM > To: AnimalFarm Microwave Users Group > Subject: [AFMUG] shape that blocks all sound > > https://www.fastcompany.com/90316833/scientists-have-discovered-a-shape-that-blocks-all-sound-even-your-co-workers > > i wonder if this could have some use case in RF antenna designs? > > > > ________________________________ > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- - Forrest -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com
