陀螺仪测量机体围绕某个轴向的旋转角速率值。

A gyro measures rate of rotation around a particular axis.

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可以通过角速率值的时间积分来估计当前的横滚角度，前提是没有误差的累积。

You can approximate the current roll Angle by integrating the roll rate over time, but you can't do so without some error creeping in.

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该值的范围随后会被调整为0到100之间的通知速率，并作为电子钢琴通知播放。

This value is then scaled to a 0-100 note velocity and played as an electronic piano note.

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