When my group members and I thinking about the study 4. We were thinking about ourselves first, cause sometimes we talk too loud in the class and that make other classmates may feel uncomfortable. So that we wanted to created a program that reminds people when they talk too loud at public. Then they may interact with each other. This study works, while people speak loudly that touches the “red line”. Meanwhile, the happy emoji will become into an angry emoji to remind audience that the voice is too loud. At the start of our work, we were trying to make the picture change when the voice changes but it was not so delicacy. But it was kind of boring so we asked Camille come and helped us. After that, we made the screen into 9 pieces that’s makes more fun with our work. The most difficult thing of our work was the sound sensing part. But Camille gave a lot help for us. So that was all about our study 4.