A lot of complex functions, such as 1/3 octave analysis, sound power, tonality narrow band analysis, vibration spectrum, have been solved.
解决噪声1/3倍频程、声功率、音调窄带谱，振动频谱等复杂功能的在线分析与处理。
In the FFT based algorithm for octave CPB spectrum, the frequency leakage causes big calculation errors in each frequency band.
基于FFT的倍频程CP B谱实现算法中，由于FFT变换时频谱泄漏的影响，导致倍频程CP B谱许多频段出现较大的计算误差。
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