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    • 22. 发明授权
    • Electronic musical instrument
    • 电子乐器
    • US4461200A
    • 1984-07-24
    • US368143
    • 1982-04-14
    • Hiroshi Kitagawa
    • Hiroshi Kitagawa
    • G10H1/08G10H1/053G10H7/08G10H7/10G10H7/00
    • G10H7/105
    • In an electronic musical instrument which produces a musical sound through calculating means of a discrete Fourier algorithm by controlling harmonic coefficients, the value of a harmonic number, more than one temporally changing effect function values and a constant value are added together in a predetermined ratio; the added value is divided into a plurality of blocks; the blocks are subjected to data conversion using plural kinds of functions arbitrarily designated corresponding to the respective blocks and outputted in combination; and the outputs are each multiplied by each harmonic coefficient, thereby controlling the harmonic coefficients with time.
    • 在通过控制谐波系数通过离散傅里叶算法的计算装置产生音乐声音的电子乐器中,以预定比例将谐波数值,多于一个时间上变化的效果函数值和常数值相加在一起; 所述附加值被分成多个块; 使用对各块进行任意指定的多种功能进行数据转换并组合输出; 并且输出各自乘以每个谐波系数,从而随时间控制谐波系数。