{"author_url":"https://blog.hatena.ne.jp/morning-pumpkin/","width":"100%","type":"rich","provider_url":"https://hatena.blog","url":"https://morning-pumpkin.hatenablog.com/entry/2022/09/26/000842","description":"helve-blog.com import numpy as np import matplotlib.pyplot as plt N = 1024 # \u30b5\u30f3\u30d7\u30eb\u6570 dt = 0.001 # \u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u5468\u671f [s] f1, f2 = 50, 120 # \u5468\u6ce2\u6570 [Hz] t = np.arange(0, N*dt, dt) # \u6642\u9593 [s] x = 1.5*np.sin(2*np.pi*f1*t) + np.sin(2*np.pi*f2*t) + 3 # \u4fe1\u53f7 fig, ax = plt.subplots() ax.plot(t, x) # ax.set_xlim(0, 0.1) ax.se\u2026","blog_title":"morning-pumpkin\u2019s blog","blog_url":"https://morning-pumpkin.hatenablog.com/","title":"FFT \u53c2\u8003","version":"1.0","provider_name":"Hatena Blog","image_url":null,"height":"190","author_name":"morning-pumpkin","published":"2022-09-26 00:08:42","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fmorning-pumpkin.hatenablog.com%2Fentry%2F2022%2F09%2F26%2F000842\" title=\"FFT \u53c2\u8003 - morning-pumpkin\u2019s blog\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","categories":["FFT"]}