Third & fourth sound effects list

It is written together because the third listing has only one sound of the turn-on computer button. The fourth listing focuses on the effect of modifying an existing sound effect. I talked to the MA students and felt that the game interface sounded messy, mainly because the link and collision sounds were both high-frequency sounds, and they both occur very frequently, so they sounded uncomfortable now, so I adjusted the EQ of the collision sound. then there was a small adjustment to the countdown, I adjusted the volume and added a little reverb. The sound of the train moving will gradually get louder when there is a third of the countdown bar left.