morning-pumpkin https://blog.hatena.ne.jp/morning-pumpkin/ morning-pumpkin’s blog https://morning-pumpkin.hatenablog.com/ FFT helve-blog.com import numpy as np import matplotlib.pyplot as plt N = 1024 # サンプル数 dt = 0.001 # サンプリング周期 [s] f1, f2 = 50, 120 # 周波数 [Hz] t = np.arange(0, N*dt, dt) # 時間 [s] x = 1.5*np.sin(2*np.pi*f1*t) + np.sin(2*np.pi*f2*t) + 3 # 信号 fig, ax = plt.subplots() ax.plot(t, x) # ax.set_xlim(0, 0.1) ax.se… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fmorning-pumpkin.hatenablog.com%2Fentry%2F2022%2F09%2F26%2F000842" title="FFT 参考 - morning-pumpkin’s blog" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> Hatena Blog https://hatena.blog 2022-09-26 00:08:42 rich https://morning-pumpkin.hatenablog.com/entry/2022/09/26/000842 1.0 100%