Webスマートフォン版サウンドモニターFFTWave スマートフォン版サウンドモニターFFTWaveはフリーソフトです。 このソフトは iPhone, iPad, android スマートフォン、タブレット等のマイクからの音声をフーリエ変換し … WebSep 16, 2024 · There are a couple of small mistakes in your script and your expectation: A cosine has two peaks in the FT at +freq and -freq because cos fx = 1/2(exp ifx + exp -ifx). Where you are using fftshift you should be using fftfreq instead, since you are plotting in the freq domain. xfft = np.fft.fftfreq(N, maxd-mind)
how to get "fft" of sin wave? - MATLAB Answers - MATLAB Central
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