[LAU] New 'acoustic metamaterial' cancels sound

[david]

On 3/7/19 7:47 PM, audio at fn.de wrote:
> On Thu, 7 Mar 2019 15:57:56 -0600, Chris Caudle wrote:
>> On Thu, March 7, 2019 2:23 pm, Gerhard Zintel wrote:
>>> For sure you can tune such a system to be efficient in
>>> a small frequency range.
>>
>> The article mentioned "a" high pitched tone, singular article in
>> English implying single frequency or small spread of frequency.  Does
>> not seem likely to be useful for music use,  might help for machinery
>> with a specific annoying high pitch frequency.
> 
> Not for music, a "valuable" use case is provided by this article.

It's also the first creation of such a thing. Possibly with further 
research and development, the frequency spread can be broadened. I think 
they could also be layered, with different layers controlling different 
frequency bands.

-- 
David W. Jones
gnome at hawaii.rr.com
authenticity, honesty, community
http://dancingtreefrog.com