{"url":"https://tadaoyamaoka.hatenablog.com/entry/2016/09/12/000919","author_name":"TadaoYamaoka","categories":["\u30d4\u30c3\u30c1\u89e3\u6790"],"description":"\u4ee5\u524d\u306e\u65e5\u8a18\u3067\u3001\u81ea\u5df1\u76f8\u95a2\u95a2\u6570\u306f\u30a6\u30a3\u30fc\u30ca\u30fc\uff1d\u30d2\u30f3\u30c1\u30f3\u306e\u5b9a\u7406\u3067FFT\u3092\u4f7f\u3063\u3066\u9ad8\u901f\u306b\u8a08\u7b97\u3067\u304d\u308b\u3053\u3068\u3092\u66f8\u3044\u305f\u3002\u81ea\u5df1\u76f8\u95a2\u95a2\u6570\u306f\u3001\u540c\u3058\u6ce2\u5f62\u30c7\u30fc\u30bf\u540c\u58eb\u3092\u305a\u3089\u3057\u306a\u304c\u3089\u639b\u3051\u5408\u308f\u305b\u305f\u5024\u306e\u5408\u8a08\u3067\u3042\u308b\u3053\u3068\u3092\u8aac\u660e\u3057\u305f\u304c\u3001\u305d\u306e\u5b9a\u7fa9\u901a\u308a\u8a08\u7b97\u3059\u308b\u5834\u5408\u306f\u7a93\u95a2\u6570\u306f\u7279\u306b\u5fc5\u8981\u306a\u3044\u3002 \u3057\u304b\u3057\u3001\u30a6\u30a3\u30fc\u30ca\u30fc\uff1d\u30d2\u30f3\u30c1\u30f3\u306e\u5b9a\u7406\u3067FFT\u3092\u4f7f\u3063\u3066\u8a08\u7b97\u3059\u308b\u5834\u5408\u306f\u3001\u7a93\u95a2\u6570\u306e\u6709\u7121\u306b\u3088\u3063\u3066\u81ea\u5df1\u76f8\u95a2\u95a2\u6570\u306e\u6e1b\u8870\u306e\u4ed5\u65b9\u304c\u5909\u308f\u3063\u3066\u304f\u308b\u305f\u3081\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3042\u308b\u3002 \u305d\u306e\u3053\u3068\u3092\u3001\u5177\u4f53\u7684\u306a\u4f8b\u3067\u793a\u3059\u3002280Hz\u306e\u6b63\u5f26\u6ce2\u306e\u81ea\u5df1\u76f8\u95a2\u3092FFT\u3092\u4f7f\u3063\u3066\u8a08\u7b97\u3059\u308b\u3068\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308b\u3002 import numpy as np import matplotlib.pyplot as plt fs\u2026","title":"\u81ea\u5df1\u76f8\u95a2\u95a2\u6570\u3068\u7a93\u95a2\u6570","published":"2016-09-12 00:09:19","type":"rich","version":"1.0","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/T/TadaoYamaoka/20160911/20160911231836.png","blog_url":"https://tadaoyamaoka.hatenablog.com/","blog_title":"TadaoYamaoka\u306e\u958b\u767a\u65e5\u8a18","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ftadaoyamaoka.hatenablog.com%2Fentry%2F2016%2F09%2F12%2F000919\" title=\"\u81ea\u5df1\u76f8\u95a2\u95a2\u6570\u3068\u7a93\u95a2\u6570 - TadaoYamaoka\u306e\u958b\u767a\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","provider_name":"Hatena Blog","provider_url":"https://hatena.blog","author_url":"https://blog.hatena.ne.jp/TadaoYamaoka/","height":"190","width":"100%"}