A new simulation study compares Fourier, wavelet, and direct time-domain fitting methods for analyzing short and non-stationary NMR signals, revealing where each approach excels and how spectrograms ...
本内容遵循CC 4.0 BY-SA版权协议 简介：这是一份MATLAB快速傅里叶变换（FFT）算法实现笔记，面向信号处理初学者与需要快速上手频谱分析的开发者。文档从FFT与DFT的关系讲起，说明采样点数、采样 ...
本文深入解析快速傅里叶变换（FFT）的数学原理，涵盖从DFT到Cooley-Tukey蝶形分解的演化过程；介绍Matlab中fft()函数的高效调用与性能优化技巧（如补零、多线程）；分析频谱泄露、加窗处理、混 ...
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