{"width":"100%","version":"1.0","author_name":"licheng","blog_title":"\u6ef4\u4e86\u5eb5\u65e5\u9332","image_url":null,"height":"190","provider_name":"Hatena Blog","published":"2026-03-13 15:25:12","provider_url":"https://hatena.blog","author_url":"https://blog.hatena.ne.jp/licheng/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Flipoyang.hatenablog.com%2Fentry%2F2026%2F03%2F13%2F152512\" title=\"ARM\u306eCMSIS-DSP\u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u5b9f\u6570FFT - \u6ef4\u4e86\u5eb5\u65e5\u9332\" 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://lipoyang.hatenablog.com/","title":"ARM\u306eCMSIS-DSP\u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u5b9f\u6570FFT","categories":["\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0","\u30de\u30a4\u30b3\u30f3"],"url":"https://lipoyang.hatenablog.com/entry/2026/03/13/152512","description":"\u524d\u56de\u306e\u8a18\u4e8b\u306e\u3064\u3065\u304d ESP32\u3067\u306fesp_dsp\u30e9\u30a4\u30d6\u30e9\u30ea\u304c\u5229\u7528\u3067\u304d\u308b\u304c\u3001ARM\u3067\u306fCMSIS-DSP\u30e9\u30a4\u30d6\u30e9\u30ea\u304c\u5229\u7528\u3067\u304d\u308b\u3002 \u4f7f\u3044\u65b9 #include <arm_math.h> arm_rfft_fast_instance_f32 S; arm_status status = arm_rfft_fast_init_f32(&S, nfft); arm_rfft_fast_f32(&S, data, data, 0); \u691c\u8a3c \u524d\u56de\u3068\u540c\u3058\u8a08\u7b97\u3092ARM\u306eCMSIS-DSP\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u3063\u3066\u5b9f\u884c\u3057\u3066\u307f\u308b\u3002\u5b9f\u9a13\u306b\u306fSPRESENSE\u3092\u7528\u3044\u305f\u3002 #include <Arduino.h> #include\u2026","type":"rich"}