I have been working this project since 2009, and feel not to publish until this project to complete.
But I have put this idea on some blog, internet and presentation couple of times since 2009.

I have just found out someone in same field might take the idea to something else,

Here I have to mention this is competely original idea, and helped by some people.

The Sound of the earth since 2009

By Yuri Suzuki

Idea collaboration with Yoshihiro Katsumata (Yamaha)
Technical support by Masa Kimura and Akichika Tanaka