复调制ZoomFFT是频谱细化技术的其中一种，从分析精度、计算效率、分辨率、灵活性等方面来看，是最有效的一种。-A common method of complex modulation ZoomFFT method, Chirp-Z transform, Yip-ZOOM transform based on, but　the analysis accuracy, computational efficiency, resolution, spirit Active perspective, Zoom-FFT method based on the polyphonic system is a kind of effective method.