Regarding the fourth work of our group, we just tried to try some small programs at the beginning. We spent a lot of time at the beginning discussing how to use non-tactile technology to show our work in Max, but we also hope There are some breakthroughs. This problem makes us very confused. Our idea is to use face recognition to control the playback and stop of several different audios. The teacher gave us advice and we used FaceOSC software to identify each person’s face to do our job more accurately. The teacher told us how to move the mouth size to change the different control directions, then use the interval number to connect the audio. When the mouth opens to the specified number (above 13), the sound will play, when the face moves (near the computer screen) is higher than When the value is 5, new audio will be played. This is something we are happy with because there are a gradual breakthrough and progress. Perhaps we will have more ideas in Study 5, which is what the teacher told us. We need to think about a complete system. In addition, the job we want people to feel they made any significant changes to the world or small changes, so when they open your mouth and move their faces when they can make different sounds.