Live Music Mode: Case Study and Development Performing Arts Production Workshop Trieste, Italy 14 July 2009 Stefan Karapetkov Emerging Technologies Director.

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Presentation transcript:

Live Music Mode: Case Study and Development Performing Arts Production Workshop Trieste, Italy 14 July 2009 Stefan Karapetkov Emerging Technologies Director Polycom

2 Manhattan School of Music

3 International Conservatory of Music (1918) Offering BM, MM and DMA in Classical & Jazz Music 800+ students from over 48 countries 350 Faculty 400 students in Precollege Division (5-17) 400+ Public Concerts/Year

4 Manhattan School of Music

5 Core Philosophy and Technologies Live, interactive audio-visual communication in virtual environment  Connect, Interact, Listen, Learn Integration of standards-based, interoperable collaboration video solutions in real time Group-based videoconferencing Live web streaming - archival video  distancelearning.msmnyc.edu/live

6 Pinchas Zukerman at Canada Art Centre Teaches a Student in New York

7 Classical Program at MSM

8 Jazz Program at MSM

9 Video Network Elements Personal Telepresence Room Based Telepresence Soft Client Recording Video Border Proxy Media Servers Management Application Gateways Directory Presence Content MgmtGK/Proxy

10 Audio and Video Compression Concert SiteRemote Site

11 Advanced Audio Compression Technology Data Bit Rate Audio Frequency G G.722 AMR-NB G.711 G Wideband Narrowband 4 kbps64 kbps128 kbps Siren 14 stereo G.729A G.728 G.722.1C Super Wide G.719 stereo Siren 22 stereo

12 Audio Codec Highlights BandwidthBit rateDelayComplexityStandardAlgorithm SIREN2222 kHz kbps mono kbps stereo 40 ms18.4 MIPSN/ATransform G kHz kbps mono kbps stereo 40 ms17.7 MIPSITUTransform MP3≤ 20 kHz kbps≥ 54 ms> 100 MIPSISOTransform MPEG-4 AAC-LD ≤ 20 kHz kbps (TAA: 64 kbps mono 128 kbps stereo) ≥ 20 ms> 130 MIPSISOTransform

13 Automatic Gain Control (AGC) Signal strength AGC adds 0dB AGC adds 3dB AGC adds 6dB Max. 12 feet from microphone Nominal is 2 feet from microphone

14 Automatic Noise Suppression (ANS) & Noise Fill Signal White noise Signal Comfort Noise ANS Noise Fill

15 Acoustic Echo Cancellation (AEC) Echo AEC Coupling

16 Advanced Video Technology: High Definition Quality Bandwidth 384kbps 512kbps1Mbps 6Mbps 480p 720p CIF SD HD 352x x x p 4K 1920x x2160

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