Ultrasound

超声模拟器，一个笑话漫画应用程序。

Ultrasound is a comic application with which you can play strange sounds and make fun of your friends. The top 10 ultrasound pranks include dynamic and smooth sounds. Try one of ten and choose your favorite! Just click on the buttons and see what happens!

Include popular school jokes and have fun with classmates, but remember! If you hear a sound, then this cannot be ultrasound. Only cats and some animals can hear it. Ultrasonic waves have frequencies higher than the upper audible limit of the human ear.