|
Posted by Existential Angst on October 28, 2009, 11:08 am
> Steve wrote:
>>> .p.jm.@see_my_sig_for_address.com wrote:
>>>> wrote:
>>>>>>>> And the total noise is reduced by about 1dBC.
>>>>>>> Oh ! dbC, now, is it ? Aren't we the fine ones ? Too proud
>>>>>>> to use the old dbA weight, are we ? :-)
>>>>> Pride has nothing to do with it. People who read, thought about and
>>>>> understood
>>>>> the problem statement would probably understand that the A-curve
>>>>> significantly suppresses the low frequencies where the problem lies.
>>>>> If I had A-weighted ears, I wouldn't have a problem.
>>>>> But, just for you, I put up a webpage:
>>>>> http://spamme0.netii.net/Noise.html
>>>> "You see this page, because the system administrator of 000webhost.com
>>>> is currently checking this website for malicious content. This
>>>> redirect will be removed once we will finish manually checking all
>>>> files on this account."
>>>> Who the fuck hosts your website, the UN's HRC ? Perhaps
>>>> Canada's version of same ?
>>>>> There are spectral plots of the noise and even an mp3 of the sound.
>>>>> You can analyze it with any weighting you choose.
>>>>> Hope the link works. Given the amount of animosity in the group,
>>>>> I didn't want to expose my real isp web address.
>>>> I see you missed the signifigance of the Monty Python HTML
>>>> tags ..... why am I not suprised ?
>>>>>> Hmmmm, didn't I suggest almost exactly the same thing, in the
>>>>>> original thread?
>>>>>> Angle iron, eh??????
>>>>>> Didn't I say that a "duct" thick enough and heavy enough would
>>>>>> guarantee quiet?
>>>> If yuo did, then you are a fool, and wrong again.
>>> OK, try this one
>>> http://nm7u.tripod.com/homepage/Noise.html
>>> throwaway websites are not always reliable.
>>> mike
>> Yup... air noise because of undersized RA ductwork because it wasn't done
>> right to begin with. The blower noise is being transmitted through the
>> duct and also the joists that the furnace is sitting on.
>> Correct the ductwork issues like I told you, isolate the furnace so its
>> not sitting on the joists(either hang it, or use isolation pads), and in
>> addition, add a vibration isolation boot between the new RA duct and the
>> furnace.
>> No its not gonna be free. your can either correct it as I told you or you
>> can live with it.... there is no bandaid.
> To the ONE person in this newsgroup who replied with TWO, count 'em TWO
> lines of text pointing me to relevant technical information...
> THANK YOU VERY MUCH.
> To those of you who insist that a noise problem is always an "undersized
> duct problem"...in spite of experiments demonstrating that it
> was NOT air noise...well...NO THANK YOU VERY MUCH!!
> Contractor came out today. This dumb ol EE told him what to do.
> He disregarded his work order and did what I asked. The system is now as
> quiet as the proverbial church mouse.
> To those of you who just like to bitch...have at each other...I'm outa
> here.
> mike
So what was the problem and what was the fix? What was the technical info
that led to the fix?
What experiments told you it was not air noise?
--
EA
| 
Yahoo! 
Google 
Windows Live 
del.icio.us 
digg 
Netscape 
XML Sitemap