High Resolution Audio Networking over IP

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High Resolution Audio Networking over IP
Peter Otto UCSD Music Technology CalIT2/CRCA pott
o_at_ucsd.edu
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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
• with synch to picture
• Exceptionally high bandwidth, uncompressed audio
  up to 24 channels, 48k 24 bit

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• Cinegrid Soundscape Project

• Similar to
• Gridjam audio
• infrastructure

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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

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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.

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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

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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

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potto_at_ucsd.edu AES TCNAS white paper
http//nas.cim.mcgill.ca/wp.pdf Jack Ox, UNM
ARTS Lab GridJam jackox_at_hpc.unm.edu www.jackox.ne
t Cell 646 773-3324