But eventually, they began to uniformly adopt this system of what's called "Octave duplication."

但是最终，人们开始广泛接受这个体系，它被称作“重复八度”。

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For example, FFT-FT, two times FFT and octave using in sound measure. All this improvement makes PDM2000 system more perfect.

如可以无限细化的FFT - FT方法，二次FFT以及把倍频程应用到声压级测量中，使PDM2000系统更完善。

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Using this technique, digital weight and digital system error modification for noise octave analyzer can be realized by software.

利用这一方法，可以以软件方式完成噪声倍频程分析的数字计权处理，并且能够实现系统误差修正。

youdao

But eventually, they began to uniformly adopt this system of what's called "Octave duplication."

但是最终,人们开始广泛接受这个体系,它被称作"重复八度"

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