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Quincke space?
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Dulcamara
Apr 8, 2010, 4:13:19 PM4/8/10
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Hello all, nice to meet you.
I am doing my first step in acoustic because of work (my company
assigned me the acoustic products and their development). I am trying
to exploit unusual ways to get acoustic insulation and abosorbtion for
buildings rather than the classical vibration dispersing and soft
porous materials. I would like to exploit wave interference and
diffraction. In particular I have an absurd idea and ask you what are
its flaws: think to a movable panel suspended inside a cavity space
with a more porous material on one wall of the cavity. The disturbing
sounds comes from the porous side, could I obtain interference moving
the panel as the moving of the trombone side in Quincke tube
eliminating so the most disturbing frequences? Thank you very much for
your time :)
I am doing my first step in acoustic because of work (my company
assigned me the acoustic products and their development). I am trying
to exploit unusual ways to get acoustic insulation and abosorbtion for
buildings rather than the classical vibration dispersing and soft
porous materials. I would like to exploit wave interference and
diffraction. In particular I have an absurd idea and ask you what are
its flaws: think to a movable panel suspended inside a cavity space
with a more porous material on one wall of the cavity. The disturbing
sounds comes from the porous side, could I obtain interference moving
the panel as the moving of the trombone side in Quincke tube
eliminating so the most disturbing frequences? Thank you very much for
your time :)
Angelo Campanella
Apr 9, 2010, 1:40:59 PM4/9/10
to
"Dulcamara" <zambelli...@gmail.com> wrote in message
news:96c4791c-3134-475b...@s9g2000yqa.googlegroups.com...
news:96c4791c-3134-475b...@s9g2000yqa.googlegroups.com...
See the SoundBlox product at
http://theproudfootcompany.com/soundblox-information.html
They modify ordinary hollow cement masonry blocks by cutting a slot into the
hollow cavities where an absorber, as well as the porosity of the
cement-cinder mix, absorb over a specified frequency range.
Angelo Campanella
--- news://freenews.netfront.net/ - complaints: ne...@netfront.net ---
Helmut Wabnig
Apr 9, 2010, 2:48:19 PM4/9/10
to
I do not know what you mean by "interference".
Could it be this:
http://en.wikipedia.org/wiki/Active_noise_control
(the Wiki article is rather poor)
w.
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