Work waveform graph and program chart are shown.

并给出了工作波形图和程序框图。

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The random profile graph experiment has demonstrated the waveform measured by the piezoelectric pickup that can really reproduce the profile of roughness surface.

随机轮廓图形实验，验证了压电传感器测得的波形能真实地复现表面特征的实际轮廓。

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It analyses areas of close curves in time-domain graph of signal waveform, so that we can detect the pitch conveniently, efficiently, precisely and reliably.

它通过对时域信号波形图中闭合曲线的面积进行相关性分析，从而达到简便、高效、高精度、高可信度地提取音调的目的。

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