Decibels & Dropped Packets: Testing Audio Resilience in Video Conf. Apps
summary
Experiment simulates packet loss 0–30% between two MacBook Pros using a BlackHole virtual audio driver, records audio, and scores outputs with PESQ MOS; three trials per loss level for Teams, Zoom, Google Meet, and Skype. Results show Zoom holds highest MOS (3.81 → 3.27 at 30%), Teams stays moderate (3.27 → 2.90), Skype falls sharply (4.33 → 1.76), and Google Meet collapses fastest (2.98 → 1.54), implicating codecs, FEC/PLC, transport protocol, and buffer management.
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chapters (11)
- 0:00Introduction
- 1:03Research motivation
- 3:33Experimental setup
- 6:46Raw data and MOS
- 7:50Results analysis
- 8:32Audio quality factors
- 9:13Audio codec comparison
- 10:38Network protocols
- 12:04Latency and jitter
- 13:27Conclusion
- 14:10Q&A
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