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AI 3 meeting(Work Shop) Noriatsu kudo (kudo@sfc.wide.ad.jp) Today ’ s agenda SOI ASIA class style Applications for real time class Audio Video settings in class room Gateway Site (SFC) Overview of SOI ASIA Project Asian Partner Sites

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AI 3 meeting(Work Shop)

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AI3 meeting(Work Shop)

Noriatsu kudo (kudo@sfc.wide.ad.jp)


Today’s agenda

  • SOI ASIA class style

  • Applications for real time class

  • Audio Video settings in class room


Gateway Site (SFC)

Overview of SOI ASIA Project

Asian Partner Sites

Relaying lectures through SFC to allasian partners using multicast and satellite

Participating in the

lectures at thePartner Institutions

The Internet

SOI Mirror Server

Giving Lectures from sites with wide network

LAN

Giving Lectures from sites any place on the Internet (Japan, US and so on)

SOI ContentsMirroring

Learn through partner’s

local mirror server


60minuteslecture

30minutesQ&A

SOI ASIA class style

5minutes break

Windows Media

BBS

VIC/RAT/(polycom)

IRC/RPT


material

video

Lecture

  • Components

    • Video

      • WMT

      • VIC/RAT

    • Material

      • PowerPoint

      • PDF

  • Staff communication

    • IRC(recommended)

    • MSN messenger

    • Yahoo messenger


Break

  • Change codec from WMT to VIC/RAT

  • Collect questions from student

    • For Interactive

      • Tell staff about it via IRC

    • For non interactive

      • Submit questions to BBS

  • Tape change(SFC ONLY)


Q&A

  • Three ways to ask question

    • Audio and Video (interactive)

    • BBS

    • IRC/MSN(not recommended)


Applications for real time class

  • Windows Media Player

  • VIC/RAT

  • RPT

  • Polycom

  • IRC


Video & Audio

wmt server

WMT encoder

Multicast stream 500kbsp

client

client

client

client

Windows Media

  • version 8 and 9 is recommended

  • Advantage

    • Multicast ready

    • Stable streaming with "un-stable-" or "non-" return path.

  • Disadvantage

    • Delay(30-60seconds)

    • Windows only

  • Future work

    • IPv6 support

  • Bandwidth

    • 500kbps(audio+video)

500kbps


Vic/rat encoder

Video & Audio

client

client

client

client

VIC/RAT

To send and receive video and audio

  • Advantage

    • No delay

    • FreeBSD,Linux,solalis support

    • Multicast ready

    • IPv6 support

  • Disadvantage

    • Require return path

  • Bandwidth

    • 1.5Mbps(video)

    • 512kbps(audio)

64kbps-128kbps

1.5M video512k audio


RPT

Power Point remote control tool

  • Functions

    • Send and receive timing info via IRC

    • Record timing info for archive

  • Advantage

    • Doesn’t need multicast

  • Disadvantage

    • Require IRC connection

IRC network

client

client

client

client


polycom

Polycom’s View station series

  • Advantage

    • Built-in echo canceller

    • All in one system

    • Multipoint support(up to 4 site)

  • Disadvantage

    • Doesn’t support multicast

    • Doesn’t support asymmetric link

  • Bandwidth

    • 64kpps-3Mbps

      • For multipoint 512kbps is maximum

64k-512kbps


AV equipments for class room

  • Microphone

  • Audio mixer

  • Echo canceller

  • DV camera

  • Speaker

  • etc


Standard AV layout for remote classrooms

Echo canceller

Audio mixer

Power amp

speaker

Video camera

(3)

(2)

(5)

(4)

Vic/rat

projector

Class roomPA systemor

microphone

(1)

(9)

(10)

(11)

(9)

(7)

(6)

(10)

(11)

(1)

(7)

(6)

Class roomPA systemor

Speaker + power amp

(2)

(3)

(4)

(5)

(8)

(8)

Ver1.0 6/3 by Noriatsu Kudo


Audio mixer

  • Control all of audio equipments

  • Requirements

    • At least 2 mic input/2 Line input

    • At least 2-bus

  • Recommendation

    • Behringer MX1604A

    • Behringer UB1204FX-PRO


Echo Canceller(1)

Acoustic echo

Power Amplifier

Power Amplifier

internet


Echo Canceller(2)

Acoustic echo

line echo

Power Amplifier

Power Amplifier

internet


Echo canceller(3)

  • Acoustic echo canceller

  • recommendation

    • Behringer DSP 1124p Feedback destroyer pro

    • Polycom EF400

    • Polycom EF2280(line echo canceller)


Other equipments

  • DV camera

    • 8mm,VHS is OK

  • Microphone

    • Wireless or wired

  • Speaker and power amp


Q&A

Any questions?

soi-asia@soi.wide.ad.jp


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