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9.1 谐波分析 由于出现了快速付里叶变换,离散时间信号的谐波分析就更重要了。我们知道,快速付里叶变换表示计算有限付里叶变换的一类有效算法。有限付里叶变换(FFT)为
9.1 Harmonic Analysis Harmonic analysis of discrete-time signals is even more important because of the fast Fourier transform. We know that fast Fourier transforms represent an efficient class of algorithms for computing finite Fourier transforms. Finite Fourier Transform (FFT) is