Author Topic: Road noise, what about active noise cancellation?  (Read 6824 times)

xWakawaka

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Road noise, what about active noise cancellation?
« on: September 01, 2006, 03:43:54 PM »
QUESTION: What about active noice cancellation techniques to combat noise as it enters a property/area?

I'm surprised not to see people selling systems that use a microphone, a little processing (phase inversion) and speakers to do an inverse wave noise cancellation thing (like the noise cancelling headphones, but scaled up). Does anyone know if this has been tried. Is it simply not feasable over a large area?

Any links or direct knowledge appreciated. Thanks

joel

  • Guest
Re: Road noise, what about active noise cancellati
« Reply #1 on: September 02, 2006, 03:55:31 PM »
Interesting idea - phase inversion and broadcast inverse wave noise cancellation.  This works best on steady noise, not varying.  

I have no direct knowledge of this process, but here are a couple of links for companies who might be able to help:

http://users.erols.com/ruckman/ancfaq.htm

And here is a quote from the "Links" page of our web site that may inerest you:



"We get lots of requests for info about noise-canceling, or Active Noise Reduction.  (ANR)  In Desert Storm, the enemy were astounded and dismayed when they couldn't hear  the American tanks drive right up into their camps!  Here's a link to a site on that subject. http://www.nctclearspeech.com/

 

anything