"In physics, resonance is a phenomenon that occurs when a vibrating system or external force drives another system to oscillate with greater amplitude at a specific preferential frequency." Wikipedia
1 - Be on a desktop with latest Google Chrome.
2 - Raise up the volume , enter and wait a minute ...
3 - If there is no audio or movement try to reload the page.
CLICK HERE TO PLAY WITH THE BOX
WANT MORE INTERACTIVE ?
Click here to play with your microphone *
*The microphone input needs Google Chrome Browser. When asked , you must allow the browser to access your microphone.