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Old 17-01-2011, 01:48 AM   #11
boggy
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Default Re: Helmholtz slat apsorber

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Originally Posted by analog View Post
Evo i polarnog dijagrama alijasiranja:
Treba napomenuti da su ova tri grafikona verovatno za isti difuzor ali su za razlicite frekvencije zvuka...

"izbijanja" i pikovi su pojacanje amplitude zracenja refleksija od difuzora, u samo odredjenim uglovima (pravcima u prostoru!), kao sto se moze videti sa slike.

pozdrav

bogi

p.s. Gorane, bilo bi dobro da dodas i ta dodatna objasnjenja oko grafikona... ovako je malo nejasno sta si konkretno hteo da kazes.
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Old 17-01-2011, 03:30 AM   #12
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Default Re: Helmholtz slat apsorber

U pitanju je povećanje efekta alijasiranja porastom broja periodičnih ponavljanja.

Diffusion lobes for groups of standard N7 diffusers at the HF cutoff frequency for 1, 6 and 50 periods respectively
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Old 17-01-2011, 03:36 AM   #13
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Default Re: Helmholtz slat apsorber

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Originally Posted by analog View Post
U pitanju je povećanje efekta alijasiranja porastom broja periodičnih ponavljanja.

Diffusion lobes for groups of standard N7 diffusers at the HF cutoff frequency for 1, 6 and 50 periods respectively
Hm.... hvala sto si objasnio sta slike predstavljaju.

Isto tako da ponovim da se ne pojavljuju ovakvi lobovi na svim frekvencijama vec samo na nekim (umnosci talasnih duzina fizickih dimenzija difuzora), i to je osnova za pojavu koloracija (cinjenica da ne sve, nego neke frekvencije "probijaju")

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Last edited by boggy; 17-01-2011 at 03:42 AM.
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Old 19-01-2011, 04:24 PM   #14
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Default Re: Helmholtz slat apsorber

Boggy,NLP....hvala!
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Old 10-04-2011, 06:12 PM   #15
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Default Re: Helmholtz slat apsorber

Na kojoj poziciji bi se preporučilo ugraditi ta vrsta apsorbera(kombinacija s letvicama), npr. na plafonu ili bočno?
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Old 10-04-2011, 07:40 PM   #16
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Default Re: Helmholtz slat apsorber

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Na kojoj poziciji bi se preporučilo ugraditi ta vrsta apsorbera(kombinacija s letvicama), npr. na plafonu ili bočno?
i jedno i drugo je ok.

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