准同步窗及其在高精度失真度测量中的应用

The Quasi-Synchronous Window and Its Application in the Measurement of Signal Distortion with High Accuracy

主要介绍了准同步窗方法及其在失真度测量中的应用情况。该方法有效地降低了基于 DFT失真度测量方法中非整周期采样引起的频谱泄漏对测量的影响 ,实验结果表明该方法有效地提高了失真度测量的准确度。

The technique of quasi-synchronous window and its application in signal distortion measurement are introduced in this paper. In the signal distortion measurement based on DFT, the technique can effectively minimize the spectrum leakage caused by the non-integer-period sampling. It is proved by the experiment that accuracy of distortion measurement can be improved by this means.