When the intensity modulation index increases, the optimal frequency modulation index increases.

随着强度调制系数增大, 频率调制系数的最优值也增大.

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As has been already demonstrated , the modulation index defines the number of partials in the spectrum.

由大多数声学设备产生的分音振幅在声音持续其间变化.

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The ratio of the limiter resistors determines the output amplitude and the modulation index.

限制电阻的比率决定了输出振幅和调制指数.

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