{"title":"\u81ea\u5df1\u76f8\u95a2\u95a2\u6570\u3092\u4f7f\u7528\u3057\u305f\u57fa\u672c\u5468\u6ce2\u6570\u306e\u6e2c\u5b9a","provider_url":"https://hatena.blog","description":"\u6628\u65e5\u306e\u65e5\u8a18\u3067\u3001FFT\u306e\u30d4\u30fc\u30af\u306f\u3001\u5468\u6ce2\u6570\u5206\u89e3\u80fd\u306b\u3088\u3063\u3066\u6c7a\u307e\u308b\u57fa\u5e95\u95a2\u6570\u306e\u6700\u5c0f\u5468\u6ce2\u6570\u306e\u6574\u6570\u500d\u3068\u306e\u305a\u308c\u306b\u3088\u3063\u3066\u5024\u304c\u5909\u308f\u308b\u3053\u3068\u3092\u8aac\u660e\u3057\u305f\u3002\u3053\u3053\u3067\u306f\u3001\u81ea\u5df1\u76f8\u95a2\u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u3068\u5468\u6ce2\u6570\u5206\u89e3\u80fd\u306b\u3088\u3089\u305a\u5b89\u5b9a\u3057\u3066\u57fa\u672c\u5468\u6ce2\u6570\u3092\u6e2c\u5b9a\u3067\u304d\u308b\u3053\u3068\u3092\u793a\u3059\u3002 \u307e\u305a\u3001FFT\u3067\u500d\u97f3\u3092\u542b\u3080\u97f3\u58f0\u30c7\u30fc\u30bf\u3067\u30d4\u30fc\u30af\u3092\u6e2c\u5b9a\u3057\u305f\u5834\u5408\u306b\u3001\u500d\u97f3\u304c\u8aa4\u691c\u77e5\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308b\u4f8b\u3092\u793a\u3059\u3002\u57fa\u672c\u5468\u6ce2\u6570\u3092440Hz\u3068\u3057\u3066\u3001\u632f\u5e45\u304c\u57fa\u672c\u5468\u6ce2\u6570\u306e95%\u306e2\u500d\u97f3\u3068\u300190%\u306e3\u500d\u97f3\u3092\u542b\u3080\u97f3\u58f0\u30c7\u30fc\u30bf\u3092FFT\u3059\u308b\u3068\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308b\u3002 import numpy as np import matplotlib.pyplot as plt fs = 44100 size = 4096\u2026","height":"190","published":"2016-08-28 11:44:23","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ftadaoyamaoka.hatenablog.com%2Fentry%2F2016%2F08%2F28%2F114423\" title=\"\u81ea\u5df1\u76f8\u95a2\u95a2\u6570\u3092\u4f7f\u7528\u3057\u305f\u57fa\u672c\u5468\u6ce2\u6570\u306e\u6e2c\u5b9a - 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>","type":"rich","categories":["FFT","\u30d4\u30c3\u30c1\u89e3\u6790"],"version":"1.0","author_url":"https://blog.hatena.ne.jp/TadaoYamaoka/","url":"https://tadaoyamaoka.hatenablog.com/entry/2016/08/28/114423","provider_name":"Hatena Blog","blog_url":"https://tadaoyamaoka.hatenablog.com/","blog_title":"TadaoYamaoka\u306e\u958b\u767a\u65e5\u8a18","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/T/TadaoYamaoka/20160828/20160828110951.png","width":"100%","author_name":"TadaoYamaoka"}