Quiet-List 1997

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Re: Technology and Coping

In a message dated 97-06-15 23:17:51 EDT, you write:

<< I'd offer the caveat that "noise cancellation" is not necessarily the same

 as insulating ourselves from noise. If someone comes up with a device to be 
 mounted beside a heat pump, and the device cancels the noise produced by 
 that heat pump, then that _is_ dealing with noise at the source in the best 
 possible way -- the householder gets to have a heat pump, and the rest of 
 us get what we want too. >>

    Will someone explain this to me? 

    How can noise be "cancelled"?

        -- Michael Wright
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