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Record a few 10-second takes, pinging the coin several times in each, then send them together.
How to pingBalance the coin on a fingertip and tap its edge.
- Find a quiet room. Turn off fans, music and the TV.
- Balance the coin on a fingertip, flat and centered. Don’t pinch it or lay it on a table, or it won’t ring.
- Hold it close to the microphone, about 10–20 cm (4–8 in) away.
- Tap the edge gently with another coin or a pen. Let each ping ring out for a second or two before the next.
- Ping 3 to 5 times per take. The take stops on its own after 10 seconds.
In the 3D view, a good ping shows up as long, bright lines highlighted in cyan: the coin’s resonant frequencies.
10s per take
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