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8 个月
FFT怎么补零?快速傅里叶变换(FFT)中为什么要补零?
补零是一种有效的技术,可以改善 FFT结果的可视化效果,并可能加快计算速度。然而,重要的是要理解,它不会提高原始信号的基频分辨率,如果使用不当,可能会引入伪影。 快速傅里叶变换(FFT)中为什么要补零? 零填充允许使用更长的FFT,这将产生更长的FFT ...
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