Anyone interested in pursuing this a bit further might want to have a
look at this:
Practical Architectural Acoustics Notebook
http://www.jwmooney.com/wcpub/index.html
Some very interesting passages relating to acoustic ecology as well.
best,
d.
Rob Danielson wrote:
> Hi Klas--
> A floating wooden or metal stud wall booth with an exterior made of 2
> layers of 5/8" drywall and 8-12" of fiberglass batting on the inside
> can drop the ambient level 40dB, maybe 45-46dB. I made the interior
> walls by jamb-fitting homesote sound paneling. Two layers of carpet
> on the floor. The biggest challenge/expense is the entrance door and
> seal. I added another seal to an 2.5" solid door and it was almost as
> quiet as the walls. Two 2" doors in one thick jamb would be better. I
> floated the 800 lb structure on four rubber closet (toilet) washers.
> Every joint and seam must be caulked. Ventilation is a bit of a pain,
> but that can be done cheaply too. Rob D.
>
> At 11:43 AM -0500 1/13/07, Walter Knapp wrote:
>> Posted by: "Klas Strandberg"
>>
>>> I would say that amps in general perform their best noise values at
>>> max gain, say 60 db.
>> The best sound out of mic preamps generally does not occur at max gain.
>> Generally the sweet spot is in the middle half of their gain adjust.
>>
>> > Do you know of any simple trick to make a "silence chamber"??
>>
>> There's plenty in the literature on making acoustic test chambers. There
>> are a number of companies that can supply the sound deadening material.
>> You can even buy the entire chamber ready made. Of course that
>> convenience is costly.
>>
>> Walt
>>
>>
>> "Microphones are not ears,
>> Loudspeakers are not birds,
>> A listening room is not nature."
>> Klas Strandberg
>> Yahoo! Groups Links
>>
>>
>>
>
>
--
derek holzer ::: http://www.umatic.nl
---Oblique Strategy # 181:
"What would your closest friend do?"
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