CHAPTER 8 SPECTRUM ANALYSIS - Purdue University

the into an amplitude and phase form. In effect, we use another representation of the Fourier Series to generate an amplitude and phase. Since a sine wave can be expressed as a cosine wave with a phase shift (or vice versa). It is possible to express the Fourier series expansion in the form shown below: 0 k 1 k k1 A x(t) M cos(k t ) 2 (6) ................
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