Evaluation

In order to examine the usability of our design, we asked 10 users to try out the application. After the tryouts, users were asked to fill out an SUS (System Usability Scale) survey, and a short interview was conducted in order to know their general user experience.

SUS Survey Result

Link of the survey:

https://drive.google.com/open?id=1EYlfL5cUUB-_BWMx2u81C-HaoAPvR_gzw7fjP8-eFJw

Average score: 82.8, this means our website has a pretty good usability.

General Interview

Three questions were asked in the interview:

1. Did you encounter any confusions while using the application?

2. What feature do you like about our website?

3. How can we improve?

According to the results, users liked our design and think that it is simple and easy to use. They didn't encounter any confusions while using the system. Some users like that the percentage is highlighted: "when ever I see my percentage in green, I feel happy." Other users think that it is great that we listed several categories for users to choose, because it serves their needs most accurately. In terms of improvements, some said that it would be better if we could add the title of the chosen topic on the recording page, because some users forgot what topic they chose. We also got comments saying the accuracy of our system could be improved.

Iterations

Changes we made:

• Originally, we only had one graph representing both volume and pitch, but we changed it into two graphs, each representing a factor. Because volume and pitch have different units, there is no need to put them on one single graph because we don't need to compare anything.
• We highlighted the percentage so that it is more obvious to users.
• We also added "tips for politeness" on the bottom right corner to help users improve.
• We added the title of the chosen topic on the recording page. We also enlarge the font size, because during the user evaluation, we found out that sometimes users don't pay attention to the prompt because the font was too small.