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Old 01-04-2010, 11:44 PM   #1
boggy
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Default Vreme reverberacije (RT60) u kontrolnim sobama

Zanimljivo da se procita:
http://www.ebu.ch/en/technical/trev/trev_274-hoeg.pdf

pozdrav

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Old 03-04-2010, 01:05 PM   #2
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Default Re: Subjective assessment of audio quality... [EBU dokument]

da li mo?e poja?njenje ?ta je "Operational room response curve"?

?ta je "ISO Noise Rating Curve, NR 15, and should preferably not exceed NR 10." Odnosno koje su to vrednosti
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Old 03-04-2010, 01:26 PM   #3
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Default Re: Subjective assessment of audio quality... [EBU dokument]

http://www.engineeringtoolbox.com/nr...ting-d_60.html

Operational room response curve je frekventni odziv jednog kanala na mestu slusanja. Dati su okviri u kojima je kriterijum zadovoljen (nista ispod 50Hz nije definisano, ali i 50Hz je ozbiljan problem u maloj sobi).

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Old 11-06-2010, 08:39 PM   #4
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Default Re: Subjective assessment of audio quality... [EBU dokument]

Formula za potrebno vreme reverberacije, koje može da varira u izvasnoj meri prema onom grafikonu:
Tm = 0.25*(Room volume/Ref.volume(100))*1/3

Room Volume je zapremina m^3?
ref volume je šta?

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Old 11-06-2010, 09:34 PM   #5
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Default Re: Subjective assessment of audio quality... [EBU dokument]

Quote:
Originally Posted by analog View Post
........
ref volume je ?ta?
......
100m3

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Old 12-06-2010, 03:08 PM   #6
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Default Re: Subjective assessment of audio quality... [EBU dokument]

Ne?to mi ne izlazi očekivani rezultat (Tm should lie in the range: 0.2 < Tm < 0.4 s), gde gre?im?

Zapremina sobe je 63m3

0,25*(63/100)*1/3 = 0.0525
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Old 10-12-2010, 12:41 AM   #7
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Default Re: AKUSTICKI TRETMAN MOJE SOBE -Home theatre

Quote:
Originally Posted by awacs View Post
Pa ne postoji "najbolje rešenje", niti će ikada postojati. Postoji gomila "prihvatljivih" rešenja, pa ako se tvoj DIY rad nalazi u tom okviru - super. Uostalom, ljudi koji ovde po Forumu traže savete za izgradnju "studija" zapravo prave lične ateljee (prostore u kojima će lično snimati i miksati). Lični radni prostor. I svako ima pravo da ga organizuje po svom ćefu.

Ćef je tu jedini bitan parametar, a niko ko je koliko-toliko pošten nema obraza da ti garantuje da će zadovoljiti tvoj ćef. Kao što ni ti verovatno svojim klijentima ne možeš da garantuješ da će reverb na dobošu (koji si lično osmislio) da im obezbedi gomilu tezgi i para.

Pozdrav,

Vasa
Hallo vasa

ali kako se mogu sa tobom sloziti. Svako radi da napravi naj bolje. Di pocima diy a di prestaje.
Cilj je poznavati faktore koje su potrene da se ispuni statute rezije. Jer mjesto za snimanje zahtjeva duge mjere. A to je studio. Barem za mene.

Neko je sjeo i definiro je da rt 60 u reziji treba biti 0,3 sek. Tako da tonski technicar ima slicne uvjete. Jedan primjer.

Ns 10 su se iz mog znanja radi toga sto su dobre za onog koji je trazio kutiju koju mozes nositi svugdje sa sobom.
Mislim da sam citao da je tako pocelo sa ns 10.
Ovo ne uzmite milo za zdravo.

Pozz
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postovi su izvuceni iz offtopica na threadu "AKUSTICKI TRETMAN MOJE SOBE -Home theatre"

Last edited by boggy; 10-12-2010 at 08:08 PM.
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Old 10-12-2010, 08:15 PM   #8
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Default Re: RT60 u kontrolnim sobama

Eto nešto na njemačkom pa ne znam jezik:
http://www.cc-music-online.de/media/..._1_2002_v2.PDF
ali mi izgleda na brzo veoma slično kao EBU i AES preporuke.
I pominje se mnogoputa "Elektronische Laufbild und Tonbearbeitung in Film Video und Rundfunkbetrieben Anforderungen an den Arbeitsplatz" odnosno DIN 15996.
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Old 10-12-2010, 12:55 AM   #9
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Default Re: AKUSTICKI TRETMAN MOJE SOBE -Home theatre

Quote:
Originally Posted by DeMa View Post
.........
Neko je sjeo i definiro je da rt 60 u reziji treba biti 0,3 sek. Tako da tonski technicar ima slicne uvjete. Jedan primjer.
..............
300ms je za veliki studio, to je predugo vreme reverberacije za male sobe.
Preporuceni RT60 varira sa velicinom prostorije.
Imas to u sledecim dokumentima:
1. ITU-R BS.1116-1 Methods for the Subjective Assessment of Small Impairments in Audio Systems Including Multichannel Sound Systems
2. Subjective assessment of audio quality — the means and methods in the EBU
Ili
3. AES Technical Council, Document AESTD1001.1.01-10, "Multichannel surround sound systems and operations"


O tome smo pricali ovde: http://www.rumski.com/forum/showthread.php?t=33486


pozdrav

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Last edited by boggy; 10-12-2010 at 02:00 AM.
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Old 10-12-2010, 05:59 AM   #10
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Default Re: AKUSTICKI TRETMAN MOJE SOBE -Home theatre

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Hey Boggy

pa dobro sta sada nije ako cemo tocno onda po njemackoj normi DIN 15996
treba bi RT60 izmedju 200 Hz do 4kHz od 0,2 do 0,4. ovisno velici sobe da. i nije pre velik RT 60. tocka i nezelim se natezati oko toga.
znaci Poznato mi je to.
ja uzimam 0.3 i to je ok. za zahtjeve moje.


rado bi to i ja poslao link zaprao mogu ali mislim da ne zelis platiti 90 Euro za DIN 15996.

imam osjecaj da samo cekas nesto popraviti. za mene je to traziti dlaku u jajetu jer to sto napisem nije krivo.


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