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The module can calculate the velocity signal from the signal provided by the acceleration sensor. This calculation is disabled by default since it can reduce the accuracy of the acceleration signal.
When converting from acceleration to velocity, low frequency portions become very large. As a result, the autogain is decreased by a few levels, which then further degrades accuracy.
If this calculation is not enabled, 0 is output for all characteristic values calculated from the velocity spectrum. Characteristic value Iso10816 is not affected by this.
该模块可以根据加速度传感器提供的加速度信号来计算速度。默认情况下禁用此功能，因为它会降低加速度信号的精度。
当从加速度转换为速度时，低频部分会变得非常大。结果导致autogain（自动增益）降低了几个级别，将进一步降低准确性。
如果未启用此计算，则根据速度谱计算的所有特征值输出为 0。且特征值 Iso10816 不受此影响。