[SWLUG] Noise abatement

[plebs.col at virgin.net]

Thanks Daniel,  but I was thinking more in terms of using computer sound  
systems to build 'headphones' for a whole house.     Perhaps I will have  
to try hacking  some headphones and  feeding their output into an  
amplifier.      Location and zoning might be quite critical.
Ilyan

On Sun, 30 Aug 2009 23:56:18 +0100, Daniel Drummond  
<dmdrummondx at gmail.com> wrote:

> plebs.col at virgin.net wrote:
>>   Is there  software or a device that will hear sound and generate the
>> sound cancelling sound  so that sound presently attacking  can be
>> cancelled?    The interesting thing is that the cancelling noise that  
>> will
>> stop noise coming this way will confuse noise that has not got here
>> yet.      Might persuade the generators to stop.
>>
> Yes, noise-cancelling headphones are available in shops everywhere.  I
> also remember hearing of this technique being used to reduce engine
> noise heard inside a car.
>
> http://en.wikipedia.org/wiki/Noise-cancelling_headphones
> http://www.argos.co.uk/webapp/wcs/stores/servlet/Search?storeId=10001&catalogId=1500001801&langId=-1&searchTerms=0483696&Submit=GO+%3E
>
>> Anyone know what is being writ about and have suggestions?      There is
>> some info in http://openlearn.open.ac.uk/mod/resource/view.php?id=285748
>>
>> Any hope of a Jericho trumpet that will quarry stone?
>>
>> Ilyan
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