How does DeSmuME talk to her mother-in-law who whistles divination?

You use the computer to design the simulator, right? Be sure to use the computer microphone, and be closer to it, so that you can speak clearly.

In addition, you must pay attention to a problem. You should find out whether the Earth whistle you are playing is Japanese or American. If it is a Japanese version, you must speak Japanese; if it is an American version, you must speak English. (The Chinese version is invalid to speak Chinese, and the original program of the game cannot recognize Chinese pronunciation)