| 摘要 |
A method of inducing concentration of a listener being adaptable for learning or entertainment purposes, the method comprising a producing of a continuing display of audible and apprehensible matter translatable into numbers, letters, or other symbols, and superimposing thereon distracting sounds effective to particularly mask and obscure such matter, the listener being required to transcribe a translation of the matter into an array in a preselected manner which will indicate a level of concentration obtained by the listener.
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