MUS 220C
Final Presentation
Daniel
ChangHyun Kim
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STANFORD, CCRMA stage |
USC, PHE106 |
Performers: Leila Vaziri and Daniel ChangHyun Kim
Playing: Mozart's
"Larghetto und Allegro" (approx 10 min)
Date/Time:
Tuesday, June 6, 2006, 11AM
Location: STANFORD
CCRMA 302, USC PHE 106
Setup: Two-way low
latency audio
Technology: Using
Jack and JackTrip from CCRMA
Result
:
Final performance
bidirectional sound recorded on Stanford end
https://ccrma.stanford.edu/~flipflop/final.wav
Final performance
pictures on USC end
http://alonso.usc.edu/~sawchuk/CaliforniaStreamin-6-6-06/
Description:
This project is
bidirectional synchronized two pianos four hands piano piece performance through
internet 2 environment Also this project is on the continuum of the “SoundWire” in CCRMA and “DIP” in Mucaoco
projects. The interesting points of this performance, Leila and me haven’t met
before actually for practicing or performing together before. Only during last
week, we have practiced two times through this system. Using microphones on
each end, we can discuss and communicate enough well about music motif. Because we can’t see now each other, all tricky scores seemed to
hard to play with good synchronization. However, breathing is one of the
best alternatives to start together after fermata. It really worked. When we
had practice before, we used also metronome which also works. So the most
important factor to make this kind of performance success depends on delay time
caused from internet environment.
Setup Illustration :
Furthermore:
So far, we only
have sound performance, no video. Needless to say, video of other ends
definitely affect good effect for performance on both sides. So next step would must be screen included between CCRMA and Mucaoco. But my final goal is conne
+cting S.Korea Seoul and N.Korea Pyeongyang through
internet. I’m
now planning to have a performance, from which the most world famous conductor,
MyungHoon Jeong from
Table 1: Technical
setup
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CCRMA, STANFORD |
IMSC, USC |
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Sound Quality |
48KHz, 16bits bidirectional -> Over CD sound quality |
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Throughput( |
8.59~8.99ms* |
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Channels(Inputs/Outputs) |
2 stereo |
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Micing |
M-S micing |
N/A** |
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Throughput(Clapping test) |
About 50 ms*** |
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Packet Routing Path |
8 hops **** |
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*Ping test from CCRMA to IMSC
64 bytes from 128.125.163.38: icmp_seq=0 ttl=57 time=8.65 ms
64 bytes from 128.125.163.38: icmp_seq=1 ttl=57 time=9.09 ms
64 bytes from 128.125.163.38: icmp_seq=2 ttl=57 time=8.65 ms
64 bytes from 128.125.163.38: icmp_seq=3 ttl=57 time=8.77 ms
64 bytes from 128.125.163.38: icmp_seq=4 ttl=57 time=8.79 ms
64 bytes from 128.125.163.38: icmp_seq=5 ttl=57 time=8.99 ms
64 bytes from 128.125.163.38: icmp_seq=6 ttl=57 time=9.00 ms
64 bytes from 128.125.163.38: icmp_seq=7 ttl=57 time=8.83 ms
64 bytes from 128.125.163.38: icmp_seq=8 ttl=57 time=8.80 ms
64 bytes from 128.125.163.38: icmp_seq=9 ttl=57 time=9.05 ms
64 bytes from 128.125.163.38: icmp_seq=10 ttl=57 time=9.03 ms
64 bytes from 128.125.163.38: icmp_seq=11 ttl=57 time=8.95 ms
64 bytes from 128.125.163.38: icmp_seq=12 ttl=57 time=9.10 ms
64 bytes from 128.125.163.38: icmp_seq=13 ttl=57 time=9.18 ms
64 bytes from 128.125.163.38: icmp_seq=14 ttl=57 time=8.88 ms
64 bytes from 128.125.163.38: icmp_seq=15 ttl=57 time=9.02 ms
64 bytes from 128.125.163.38: icmp_seq=16 ttl=57 time=8.82 ms
64 bytes from 128.125.163.38: icmp_seq=17 ttl=57 time=8.94 ms
--- 128.125.163.38 ping statistics ---
18 packets transmitted, 18 received, 0% packet loss, time 17004ms
rtt min/avg/max/mdev = 8.652/8.923/9.184/0.173 ms, pipe 2
**Direct connection to PC
***Clapping test between speaker and microphone, then check the time delay -> time delay is about 50ms.
****route path -> 8 hops
1 press-gateway.stanford.edu (171.64.197.1) 0.329 ms 0.278 ms 0.308 ms
2 bbr2-rtr (171.64.1.161) 0.247 ms 0.229 ms 0.282 ms
3 hpr1-rtr (171.64.1.131) 1.047 ms 0.686 ms 0.704 ms
4 hpr-svl-hpr--stan-ge.cenic.net (137.164.27.161) 1.461 ms 1.328 ms 1.352 ms
5 lax-hpr--svl-hpr-10ge.cenic.net (137.164.25.12) 9.115 ms 8.635 ms 8.957 ms
6 lax-hpr.losnettos-hpr.cenic.net (137.164.27.245) 9.028 ms 8.968 ms 8.734 ms
7 v251-gw-17.usc.edu (128.125.251.154) 9.148 ms 9.123 ms 8.687 ms
8 pindaros.usc.edu (128.125.163.38) 9.262 ms !<10> 9.018 ms !<10> 8.880 ms !<10>