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Old 22-04-2009, 10:28 PM   #11
boggy
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Default Re: Perforacija, matrica...?

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Razmisljao sam i o tome, ali je malo nezgrapno, jer bi bila iza tastature (u odnosu na mene).... Nezgodno bi bilo to izvlaciti, uvlaciti, postavljati....
Stalak ne pomeras nikad, nego oko njega formiras radne povrsine (MALE!)
Samo se miche klavijatura... a za tezge kupi drugi stalak.

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Old 22-04-2009, 10:59 PM   #12
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Default Re: Perforacija, matrica...?

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Stalak ne pomeras nikad, nego oko njega formiras radne povrsine (MALE!)
Samo se miche klavijatura... a za tezge kupi drugi stalak.

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Old 24-04-2009, 06:27 PM   #13
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Default Re: Perforacija, matrica...?

Evo formule ako zelis kupiti nesto gotovo.

imas nekoliko razliciti nacina tome prestupiti. sto se tice materijala.
Ako zelis buszit rupe onda ti je to ubit Helhotz absorber.

http://www.schall-isolierung.de/cms/...lochblech.html

evi ti jedna stranica kako bi to moglo izgledati.


a formula sljedi u biti je formula helmhotza, ali se uzima procentualna preforacija.
Ali ima super rjesenje ako imas priliku mozes uzeti akkustik deku od naprimjer knaufa koji tocno taj princip koriste. Ako sam pogodio temu razjasnit cu formulu, jer nisam siguran, onda se javi.

pozz
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Old 24-04-2009, 07:13 PM   #14
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Default Re: Perforacija, matrica...?

pa evo jo? jedanput, pa jedanput, pa jedanput...
http://www.rumski.com/forum/showpost...0&postcount=19
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Old 25-04-2009, 06:13 PM   #15
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Default Re: Perforacija, matrica...?

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pa evo jo? jedanput, pa jedanput, pa jedanput...
http://www.rumski.com/forum/showpost...0&postcount=19

Tocnije je ovdje.

http://www.rumski.com/forum/showthre...t=24983&page=2

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Old 26-04-2009, 10:15 AM   #16
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Default Re: Perforacija, matrica...?

Ufff pa opet si kod helmoltza... točnije je ovdje... pa onda se RPGovi stručnjaci la?u i izmi?ljaju neke nepotrebne stvari (http://rpginc.com/products/badarc/index.htm , ako si gledao njihov razvoj iRooma ovi bad arc bi bio prilagođen kutni absorber perforiran tom metodom, dakle difuzor i absorber)...dobro onda ču staviti tako ako bi helmholtz resonator (koji je primarno namijenjen absorbciji tjunovane frekvencije) imao napravljene rupe po takvoj matrici, njegova povr?ina bi pru?ila i mnogo kvalitetniju difuziju nego obično uniformirane perforirane ploče.
Pa i boggy (i ja) je u tom postu ne?to o tome pričao.
Jel sada jasnije, nema veze ako neko voli aktivne resonatore ili ne pričamo o najprimernoj matrici perforacije.
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Old 26-04-2009, 10:56 AM   #17
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Default Re: Perforacija, matrica...?

NLP, nije isto:

1. znati teoretski sta je Helmholtzov rezonator, i stalno ga primenjivati na nacin kako je ilustrovan u knjizi gde je opisan (taj prikaz se najcesce prepisuje od drugih autora, pa i nema nekog odstupanja od "pravila")

2. Razumeti prirodnu pojavu koju je Hermann von Helmholtz otkrio/opisao kao Helmholtzovu rezonanciju i primenjivati tu prirodnu pojavu kao pojavu, saglasno sa ostalim prirodnim pojavama, a ne kao ilustraciju iz udzbenika/knjige.

Hocu reci, nije kriv siroti Helmholtz!


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Old 26-04-2009, 11:00 AM   #18
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Default Re: Perforacija, matrica...?

da znam da nije isto ali helmholtz resonator ima rupe i mogle bi biti iskalkulisane po tom principu, nekakav hibridni akustički elemenat recimo.

... ali zašto onda dema skače nonstop oko tih resonatora?! kada pričamo o primjernoj perforaciji.

Edit: ja samo govorim da tako uniformna perforacija nije okej to je sve, radi li se o rupama na gipsu ili resonatoru (i pominje perforirane ploče) ako ga več itko spomene.
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Last edited by NLP; 26-04-2009 at 11:03 AM.
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Old 26-04-2009, 11:05 AM   #19
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Default Re: Perforacija, matrica...?

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....

Edit: ja samo govorim da tako uniformna perforacija nije okej to je sve, radi li se o rupama na gipsu ili resonatoru (i pominje perforirane ploče) ako ga več itko spomene.
Isto i ja govorim, u stvari... pisem...

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Old 26-04-2009, 11:06 AM   #20
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Default Re: Perforacija, matrica...?

aha okej, bio sam malo zbunjen da me ne razume?
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