High Resolution Audio Networking over IP Peter Otto UCSD Music Technology CalIT2/CRCA

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 Audio over IP current work

Cinegrid Soundscape Project –Similar to Gridjam audio infrastructure

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 Audio over IP BIG ISSUES:

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.

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

…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

AES TCNAS white paper Jack Ox, UNM ARTS Lab GridJam Cell: