Science > Physics > A totally new system for low frequency loudspeakers (woofer).. sound cancelling... and it really seems to work.
| Topic: |
Science > Physics |
| User: |
"Jan Panteltje" |
| Date: |
13 Mar 2005 12:34:24 PM |
| Object: |
A totally new system for low frequency loudspeakers (woofer).. sound cancelling... and it really seems to work. |
Lots of info here:
http://www.swedish-ip.com/RotoSub/
It is based of modulating the airflow of a fan...
Not just theory, it is at Cebit.
Better picture here:
http://www.heise.de/newsticker/meldung/57474
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| User: "CWatters" |
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| Title: Re: A totally new system for low frequency loudspeakers (woofer).. sound cancelling... and it really seems to work. |
13 Mar 2005 12:57:10 PM |
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"Jan Panteltje" <pNaonStpealmtje@yahoo.com> wrote in message
news:1110738873.4c7e39a50ac319e299af4de6c91453a3@teranews...
Lots of info here:
http://www.swedish-ip.com/RotoSub/
It is based of modulating the airflow of a fan...
Not just theory, it is at Cebit.
Better picture here:
http://www.heise.de/newsticker/meldung/57474
Really neat idea. Amazed it works.
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| User: "Franz Heymann" |
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| Title: Re: A totally new system for low frequency loudspeakers (woofer).. sound cancelling... and it really seems to work. |
13 Mar 2005 03:28:26 PM |
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"Jan Panteltje" <pNaonStpealmtje@yahoo.com> wrote in message
news:1110738873.4c7e39a50ac319e299af4de6c91453a3@teranews...
Lots of info here:
http://www.swedish-ip.com/RotoSub/
It is based of modulating the airflow of a fan...
Not just theory, it is at Cebit.
The idea of modulating the air flow in the throat of a horn is nearly
70 years old, and has been in use with public announcement equipment
since I was young.
--
Franz
"One Galileo in 2000 years is enough."
Pope Pius XII
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