但是时间常数越低，允许通过的水平加速度噪声就越多。
But the lower the time constant, the more horizontal acceleration noise will be allowed to pass through.
噪声的产生和滤波均由单板机实现。改变单板机CT C定时器的输入时间常数，就可直接调整模拟衰落信号的衰落速率。
The noise generation and filters are performed by a microprocessor for which the input time constant of CTC can be varied to control the fading rate.
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