| 摘要 |
According to an embodiment of the present invention, a pad for generating rhythmic sound waves comprises: at least two first patterns configured to generate a first sound wave in response to friction; and at least two second patterns configured to generate a second sound wave in response to the friction, wherein each of the first patterns is spaced and positioned in a constant distance, the at least two second patterns are positioned between the spaced first patterns, and for each of specific directions between the spaced first patterns, the first patterns and the second patterns are spaced and positioned in a different distance. |
