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。
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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