Predavanje održano 17. aprila 2019 na Prirodno-matematičkom fakultetu u Nišu, u okviru CPD kursa "Virtual Learning Environment in University Laboratory Classes" koji se realizuje kao deo aktivnosti NETCHEM projekta.

1. ______________________________________________________________________________________________________
This project has been funded with support from the European Commission. This publication reflects the views only of the authors, and the
Commission cannot be held responsible for any use which may be made of the information contained therein.
Metodički scenario 4:
Audio prezentovanje jednosmerna
i dvosmerna komunikacija
dr Milan Milošević
Departman za fiziku, PMF u Nišu

2. ______________________________________________________________________________________________________
This project has been funded with support from the European Commission. This publication reflects the views only of the authors, and the
Commission cannot be held responsible for any use which may be made of the information contained therein.
Namena
• Ozvučenje u amfiteatru (predavač)
• Zvuk sa računara
• Mikrofon u publici
• Video konferencija

3. ______________________________________________________________________________________________________
This project has been funded with support from the European Commission. This publication reflects the views only of the authors, and the
Commission cannot be held responsible for any use which may be made of the information contained therein.
Oprema
• Mikseta Behringer EUROPOWER PMP518M
• 2 zvučnika, 2 mikrofona
• Bežični mikrofon SR 40 SINGLE („pilot“ mikrofon)
• Audio „receiver“ Onkyo TX-NR575E / AV RECEIVER
• USB Mikrofoni Behringer Ultralink ULM200M

4. ______________________________________________________________________________________________________
This project has been funded with support from the European Commission. This publication reflects the views only of the authors, and the
Commission cannot be held responsible for any use which may be made of the information contained therein.
Ozvučenje amfiteatra
• Preporučeno korišćenje 50+ ljudi u publici
• Najbolje – „pilot“ mikrofon za predavača
• Dva mikrofona (sa kablom) za ostale govornike (i/ili pitanja publike)
• Mikrofon (najbolje „pilot“) eliminiše problem akustičnosti
• Npr. problem ako je predavač okrenut ka platnu
• Najjednostavnije povezivanje i korišćenje

5. ______________________________________________________________________________________________________
This project has been funded with support from the European Commission. This publication reflects the views only of the authors, and the
Commission cannot be held responsible for any use which may be made of the information contained therein.
Ozvučenje
(mikrofoni)
TRS konektor (6.35 mm)
XLR konektor
TRS konektori (3,5 / 6,35 mm)

6. ______________________________________________________________________________________________________
This project has been funded with support from the European Commission. This publication reflects the views only of the authors, and the
Commission cannot be held responsible for any use which may be made of the information contained therein.
Kontrola zvuka
Jačina
Master volume
Prekidač
On / Off
Podešavanje ulaznog signala
(svaki kanal se posebno podešava,
ako je više mikrofona/govornika
podesiti tako da zvuk na izlazu bude iste jačine)
Kontrola

7. ______________________________________________________________________________________________________
This project has been funded with support from the European Commission. This publication reflects the views only of the authors, and the
Commission cannot be held responsible for any use which may be made of the information contained therein.
Veza sa računarom
Ulaz / izlaz
RCA (činč) konektori
(povezati preko konektora za
slušalice / mikrofon na laptopu)

8. ______________________________________________________________________________________________________
This project has been funded with support from the European Commission. This publication reflects the views only of the authors, and the
Commission cannot be held responsible for any use which may be made of the information contained therein.
Veza sa računarom
• Problem:
• (novi) laptopovi najčešće imaju kombinovan konektor za mikrofon i slušalice
• Potreba za velikim brojem adaptera
• Relativno nizak kvalitet zvuka (namenjen samo za govor)

9. ______________________________________________________________________________________________________
This project has been funded with support from the European Commission. This publication reflects the views only of the authors, and the
Commission cannot be held responsible for any use which may be made of the information contained therein.
Zvuk sa računara
• Audio „receiver“ Onkyo TX-NR575E / AV RECEIVER
• 4 zvučnika (2 x 2 dva zvučnika)
• Povezivanje - HDMI kabl

10. ______________________________________________________________________________________________________
This project has been funded with support from the European Commission. This publication reflects the views only of the authors, and the
Commission cannot be held responsible for any use which may be made of the information contained therein.
Bežični mikrofoni
• USB Mikrofoni Behringer Ultralink ULM200M
• Koristiti samo za video konferenciju / računar
• bez ozvučenja (zbog kašnjenja signala)

11. ______________________________________________________________________________________________________
This project has been funded with support from the European Commission. This publication reflects the views only of the authors, and the
Commission cannot be held responsible for any use which may be made of the information contained therein.
Video konferencija
• Najkomplikovanija konfiguracija
• Potrebno:
• Ozvučenje
• Zvuk sa računara
• Mikrofon (ili više njih) na računaru
• Opciono: video veza

12. ______________________________________________________________________________________________________
This project has been funded with support from the European Commission. This publication reflects the views only of the authors, and the
Commission cannot be held responsible for any use which may be made of the information contained therein.
Video konferencija
• Najjednostavnije:
• Korišćenje miksete povezane na računar
• Nedostatak:
• niži kvalitet zvuka, nema bežičnog mikrofona, pojava eha na drugoj strani
• Komplikovanije:
• Povezivanje:
• Mikseta – povezana na mikrofon na računaru
• Risiver – povezan sa računarom preko HDMI kabla
• Neophodno je podesiti odgovarajuće parametre na računaru, a tokom trajanja
konferencije potrebna je stalna kontrola i podešavanje opreme

13. ______________________________________________________________________________________________________
This project has been funded with support from the European Commission. This publication reflects the views only of the authors, and the
Commission cannot be held responsible for any use which may be made of the information contained therein.
Zaključak i preporuke
• Mogući problemi kod složenih konfiguracija:
• Mikrofonija (mikrofon se nalazi blizu zvučnika)
• Kašnjenje zvuka (spora obrada signala)
• Eho (video konferencija)
• Kad god je moguće koristiti samo „miksetu“
• Ako se povezuje dva ili više ulaza dobro je imati tehničku podršku pored miksete /
risivera (tokom trajanja programa)
• Za kvalitetan zvuk sa računara koristiti „risiver“