{"author_name":"S-ili","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fs-ili.hatenadiary.org%2Fentry%2F20070718%2F1184751489\" title=\"Octave\u3067FFT - S\u03bb\u306e\u65e5\u8a18 --\u3046\u3064\u308d\u306a\u65e5\u3005--\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_url":"https://s-ili.hatenadiary.org/","width":"100%","image_url":null,"published":"2007-07-18 18:38:09","title":"Octave\u3067FFT","provider_name":"Hatena Blog","description":"\u8d85\u7c21\u5358\u3067\u3059\u3002\u554f\u984c\u306f\u3069\u3046\u3084\u3063\u3066\u30c7\u30fc\u30bf\u3092\u30a4\u30f3\u30dd\u30fc\u30c8\u3059\u308b\u304b\u306a\u3093\u3060\u3051\u3069\u3001\u666e\u901a\u306e\u5f62\u5f0f\u3067\u30c7\u30fc\u30bf\u304c\u4e0e\u3048\u3089\u308c\u3066\u3044\u308c\u3070\u307e\u3042\u554f\u984c\u306a\u304b\u308d\u3046\u3002 \u624b\u9806\u306f\u3001 \u30c7\u30fc\u30bf\u3092\u8aad\u307f\u8fbc\u3080 fft()\u95a2\u6570\u3067FFT \u7d50\u679c\u3092\u30d7\u30ed\u30c3\u30c8 \u3042\u308b\u5909\u6570hoge\u306b\u30c7\u30fc\u30bf\u304c\u5165\u3063\u3066\u305f\u3068\u3057\u305f\u3089\u3001\u305d\u308c\u3092fft(hoge)\u3068\u3059\u308b\u3060\u3051\u3067FFT\u3067\u304d\u308b\u3089\u3057\u3044\u3002\u7d20\u6674\u3089\u3057\u3044\u3002\u305d\u3057\u3066\u3088\u304f\u898b\u308b\u30d1\u30ef\u30fc\u30b9\u30da\u30af\u30c8\u30eb\u306b\u3057\u305f\u3044\u3068\u304d\u306f\u3001\u7d76\u5bfe\u4f4d\u7f6e\u3092\u3068\u3063\u3066\u3001\u305d\u308c\u306b\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u30ec\u30fc\u30c8\u3092\u639b\u3051\u308c\u3070\u826f\u3044\u306e\u3067\u3001\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u30ec\u30fc\u30c8\u3092Delta\u3068\u3059\u308b\u3068\u3001Delta*abs(fft(hoge))\u3067\u7d42\u308f\u308a\u3002\u8a73\u7d30\u306f\u300c\u7d9a\u304d\u3092\u8aad\u3080\u300d\u3067\u3002","url":"https://s-ili.hatenadiary.org/entry/20070718/1184751489","height":"190","version":"1.0","categories":["Octave","\u6570\u5024\u8a08\u7b97"],"type":"rich","author_url":"https://blog.hatena.ne.jp/S-ili/","provider_url":"https://hatena.blog","blog_title":"S\u03bb\u306e\u65e5\u8a18 --\u3046\u3064\u308d\u306a\u65e5\u3005--"}