摘要
讨论了ＦＦＴ应用过程中的Ａ／Ｄ转换量化误差、频谱混迭现象、频谱能量的泄漏以及频谱的栅栏效应等主要误差因素对分析结果的影响。提出了各种情况下可能采取的措绝，供有关工程技术人员参考。
Based on the essence of fast Fourier transformation, the main errors encountered in the quantizing distortion in A/D converting, as well as the leakage effect, aliasing effect and railing effect in signal spectrum analysis are discussed. The corrective measures in various conditions are proposed.
