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Evaluation of Speak

This project involves conducting experiments to evaluate the performance of your audioconference software. Compare different settings such as loss rates, latency, connection types, and speech detection. Report user perceptions through brief conversations and perceptual quality measures. Write a detailed analysis and conclusion based on the experiments.

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Evaluation of Speak

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  1. Evaluation of Speak Project 2b Due March 30th

  2. Overview • Experiments to evaluate performance of your audioconference (proj2) • Focus not only on how your software performs, but also • design, implementation of experiments • analysis • writeup

  3. Details • Two parts • in-depth user study with friend (called “group”) • More forgiving users, less objective • brief user study outside group • For both parts, evaluate by user perception • 1-2 minute conversation • Record user opinions (1-100, or similar) • Pencil and paper, software, …

  4. In Group • Baseline case: 0% loss, UDP, no speech detection, 40ms • Compare versus: • Loss: 0%, 1%, 5%, 10%, 20% • Latency (by increasing the sample interval): 40ms, 100ms, 250ms, 500ms, 1000ms • Connection type: TCP, UDP • Speech detection: on, off • Pick (and justify) Perceptual Quality measure

  5. Outside Group • 1-3 people outside of your group • Record some basic information • age, gender, profession… • Loss rates of 0%, 5%, 20% • Record • Quality score (scale 1-100, or similar) • Subjective comments ("sounded good", "was hard to talk", etc). • Ask to compare with phone call

  6. Report • Introduction (brief) • hypotheses and motivation • Background on your software (optional) • Design of your experiments (brief, since given) • details on above • Analysis (detailed) • Conclusions (brief) • summarize findings • Abstract • 1 paragraph • Write last, goes first

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