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High Resolution Audio Networking over IP

High Resolution Audio Networking over IP. Peter Otto UCSD Music Technology CalIT2/CRCA potto@ucsd.edu. Audio over IP current work. We have experience in both LAN and WAN audio networking Production, post production storage and streaming Live Performance and Realtime Media Delivery

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High Resolution Audio Networking over IP

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  1. High Resolution Audio Networking over IP • Peter Otto • UCSD Music Technology • CalIT2/CRCA • potto@ucsd.edu

  2. Audio over IPcurrent work • We have experience in both LAN and WAN audio networking • Production, post production storage and streaming • Live Performance and Realtime Media Delivery with synch to picture • Exceptionally high bandwidth, uncompressed audio up to 24 channels, 48k 24 bit

  3. Similar to Gridjam audio infrastructure Cinegrid Soundscape Project

  4. Audio over IP BIG ISSUES: • Latency and Synch are (of course) huge issues • Picture to audio • Multipoint audio synch • Sample synchronicity and clocking jitter • Latency/Synch in sound + picture • Production work-flow: problems & opportunities • Reconfigurable, autoconfig systems • Interfaces / Applications • Compression-free audio production

  5. current work and interests • Feedback and parallel communications in production, conferencing, streaming • audio quality / assignment / monitoring control: Q:how do you know whether something sounds right on the other end of the pipe? (Metering tells you the state of a signal in hardware, but not what is happening acoustically in a room) A:new research project: convolve the acoustics of a sending environment with a receiving environment (using smart room designs in sensor-rich multichannel studios and theatres). A: volumetric modeled metering.

  6. Specific problems to explore this year: 1. Performance barriers in long distance remote storage (latency) -sample libraries, tracks, dialog sessions -security, encryption 2. Control - device surfaces touching all parameters of distant DAW / DSP • 8 chnl audio return, KVM. • 160 chnl mixes • retain immediacy of gesture - for remote instrumentation

  7. …problems to explore this year… 3. Streaming and synch of audio and picture in multiple production modes: a. synchronous audio and picture, b. local picture, distant audio c. local audio, distant picture d. distant picture, distant audio e. multipoint audio sources Gridjam: 8 ch 48k 24 bit mixed, dvi -- timing info at all nodes; look at black boxes and gp computers

  8. potto@ucsd.edu • AES TCNAS white paper • http://nas.cim.mcgill.ca/wp.pdf • Jack Ox, UNM ARTS Lab • GridJam • jackox@hpc.unm.edu • www.jackox.net • Cell: 646 773-3324

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