The techniques are acquired through repetition of such copying and passed on in this intuitive way. As even the experts acquired them by intuition, the techniques are difficult to put into explicit knowledge, forms of word or value. To solve the problem, recently there are numerous attempts to turn the techniques into explicit knowledge for preservation and transmission thereof. However, current situation is that not all of the knowledge is conveyed by unsuccessfully forcing tacit knowledge (skills) into the disguise of its explicit counterpart. It is necessary to preserve the tacit knowledge learned by experience and intuition and convey it in a way understandable. Techniques refer to postures and motions of experts. Motions of the experts striking a Wadaiko are extracted as data, which is used in developing an instruction system of passing on the techniques of the experts to novices. Finally, it is verified whether the novices have acquired the techniques through the system.
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