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\u6ce8\u610f\u70b9\u3082\u660e\u78ba\u306b\u3057\u3066\u304a\u304d\u305f\u3044\u3002- \u30b9\u30da\u30af\u30c8\u30eb\u91cd\u5fc3\u306f\u300c\u4e2d\u5fc3\u306e\u4f4d\u7f6e\u300d\u3092\u8868\u3059\u305f\u3081\u3001\u5358\u4e00\u306e\u92ed\u3044\u9ad8\u57df\u30d4\u30fc\u30af\u306b\u5f15\u3063\u5f35\u3089\u308c\u3084\u3059\u3044\u3002\u5e2f\u57df\u9650\u5b9a\u3067\u306e\u8a08\u7b97\u3084\u3001\u30ed\u30d0\u30b9\u30c8\u306a\u7d71\u8a08\uff08\u4e2d\u592e\u5024\u91cd\u5fc3\u306e\u53c2\u8003\u89b3\u5bdf\uff09\u3092\u88dc\u52a9\u7684\u306b\u4f7f\u3046\u3068\u3001\u5916\u308c\u7684\u306a\u30d4\u30fc\u30af\u306e\u5f71\u97ff\u3092\u8a55\u4fa1\u3057\u3084\u3059\u3044\u3002- \u300c\u5e73\u5747\u300d\u3068\u300c\u4e2d\u592e\u5024\u300d\u306e\u6df7\u540c\u306b\u6ce8\u610f\u3002\u91cd\u5fc3\u306e\u4e00\u822c\u7684\u5b9a\u7fa9\u306f\u201c\u91cd\u307f\u4ed8\u304d\u5e73\u5747\u201d\u3067\u3042\u308a\u3001\u4e2d\u592e\u5024\u3068\u306f\u7570\u306a\u308b\u3002- \u8074\u611f\u306e\u201c\u660e\u308b\u3055\u201d\u3068\u5b9a\u91cf\u306e\u4e00\u81f4\u306f\u7d4c\u9a13\u7684\u306b\u826f\u597d\u3060\u304c\u3001\u8074\u611f\u5c3a\u5ea6\u306e\u30b7\u30e3\u30fc\u30d7\u30cd\u30b9\u7b49\u3068\u306f\u5b9a\u7fa9\u304c\u7570\u306a\u308b\u305f\u3081\u3001\u76ee\u7684\u306b\u5fdc\u3058\u3066\u4f7f\u3044\u5206\u3051\u308b\uff08\u30b7\u30e3\u30fc\u30d7\u30cd\u30b9\u306f\u97f3\u97ff\u5fc3\u7406\u30e2\u30c7\u30eb\u3092\u4f34\u3046\u5225\u306e\u5c3a\u5ea6\u3067\u3042\u308a\u3001\u8a08\u7b97\u306e\u524d\u63d0\u304c\u9055\u3046\uff09\u3002- \u6e2c\u5b9a\u6761\u4ef6\uff08\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u3001\u7a93\u3001FFT\u30b5\u30a4\u30ba\u3001\u5e2f\u57df\u4e0a\u4e0b\u9650\uff09\u3092\u56fa\u5b9a\u3057\u3001\u6bd4\u8f03\u306e\u516c\u5e73\u6027\u3092\u4fdd\u3064\u3002\u30c4\u30fc\u30eb\u3084\u5b9f\u88c5\u306b\u3088\u308a\u7d30\u90e8\uff08\u632f\u5e45\/\u30d1\u30ef\u30fc\u3069\u3061\u3089\u3067\u91cd\u307f\u4ed8\u3051\u3059\u308b\u304b\u7b49\uff09\u304c\u7570\u306a\u308b\u305f\u3081\u3001\u4ed5\u69d8\u3092\u660e\u8a18\u3057\u3066\u518d\u73fe\u6027\u3092\u78ba\u4fdd\u3059\u308b\u3002[11][2][4][1]\n\n\n\n
\u8aad\u307f\u65b9\u306e\u30b3\u30c4\u3092\u307e\u3068\u3081\u308b\u3002- \u5024\u304c\u9ad8\u3044\uff1d\u9ad8\u57df\u5bc4\u308a\u3001\u4f4e\u3044\uff1d\u4f4e\u57df\u5bc4\u308a\u3001\u3068\u3044\u3046\u4e00\u6b21\u8fd1\u4f3c\u306e\u7406\u89e3\u3092\u51fa\u767a\u70b9\u306b\u3001\u6642\u9593\u63a8\u79fb\u3092\u898b\u308b\u3002\u6025\u306a\u4e0a\u6607\u306f\u9ad8\u57df\u30a4\u30d9\u30f3\u30c8\uff08\u885d\u6483\u3001\u6469\u64e6\u5897\u52a0\u306a\u3069\uff09\u306b\u5bfe\u5fdc\u3059\u308b\u3053\u3068\u304c\u591a\u3044\u3002- \u540c\u4e00\u904b\u8ee2\u6761\u4ef6\u30fb\u540c\u4e00\u30de\u30a4\u30af\u30fb\u540c\u4e00\u914d\u7f6e\u3067\u306e\u6bd4\u8f03\u3092\u539f\u5247\u3068\u3057\u3001\u88c5\u7f6e\u5225\u3084\u5b63\u7bc0\u30fb\u8ca0\u8377\u306e\u9055\u3044\u306f\u5225\u7cfb\u5217\u3067\u6271\u3046\u3002- \u30b9\u30da\u30af\u30c8\u30eb\u30b0\u30e9\u30d5\u3084\u30b9\u30da\u30af\u30c8\u30ed\u30b0\u30e9\u30e0\u3068\u4f75\u8aad\u3057\u3066\u3001\u91cd\u5fc3\u5909\u5316\u306e\u6839\u62e0\uff08\u3069\u306e\u5e2f\u57df\u306e\u5f37\u3055\u304c\u5909\u308f\u3063\u305f\u304b\uff09\u3092\u5fc5\u305a\u78ba\u8a8d\u3059\u308b\u3002- \u91cd\u8981\u5ea6\u306e\u9ad8\u3044\u76e3\u8996\u3067\u306f\u3001\u91cd\u5fc3\u306e\u30c8\u30ec\u30f3\u30c9\u306b\u3057\u304d\u3044\u5024\u3092\u8a2d\u3051\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u5e2f\u57df\u30a8\u30cd\u30eb\u30ae\u30fc\u6bd4\uff08\u9ad8\u57df\/\u4f4e\u57df\uff09\u3084\u30b9\u30da\u30af\u30c8\u30eb\u50be\u659c\u306a\u3069\u3068\u4f75\u7528\u3057\u3066\u8aa4\u8b66\u5831\u3092\u6291\u3048\u308b\u3002[4][12]\n\n\n\n
\u6700\u5f8c\u306b\u3001\u5b9f\u88c5\u3068\u6559\u6750\u5316\u306e\u624b\u9806\u3092\u7c21\u6f54\u306b\u793a\u3059\u30021) \u30c7\u30fc\u30bf\u3092\u77ed\u6642\u9593\u30d5\u30ec\u30fc\u30df\u30f3\u30b0\u3001\u7a93\u95a2\u6570\u3092\u9069\u7528\u3057FFT\u30022) \u76ee\u7684\u5e2f\u57df\u3092\u6c7a\u3081\u3001\u5404\u30d5\u30ec\u30fc\u30e0\u3067\u91cd\u5fc3SC=\u03a3 f|X| \/ \u03a3|X| \u3092\u8a08\u7b97\uff08\u5fc5\u8981\u306a\u3089\u30d1\u30ef\u30fc|X|^2\u3067\u91cd\u307f\u4ed8\u3051\uff09\u30023) \u6642\u7cfb\u5217\u306eSC\u3092\u5e73\u6ed1\u5316\u3057\u3066\u30c8\u30ec\u30f3\u30c9\u3092\u63cf\u304f\u30024) \u4f75\u305b\u3066RMS\u3001\u5e2f\u57df\u30a8\u30cd\u30eb\u30ae\u30fc\u3001\u30b9\u30da\u30af\u30c8\u30eb\u5e73\u5766\u5ea6\u3084\u50be\u659c\u3082\u51fa\u3057\u3001\u76f8\u95a2\u3084\u5dee\u5206\u3092\u78ba\u8a8d\u30025) \u6b63\u5e38\u30c7\u30fc\u30bf\u3067\u57fa\u6e96\u30ec\u30f3\u30b8\u3092\u5b9a\u3081\u3001\u9038\u8131\u691c\u77e5\u306e\u30eb\u30fc\u30eb\u3092\u8a2d\u8a08\u3002\u5b9a\u7fa9\u30fb\u8a08\u7b97\u5f0f\u30fb\u660e\u308b\u3055\u3068\u306e\u5bfe\u5fdc\u30fb\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306f\u4fe1\u53f7\u51e6\u7406\u306e\u57fa\u672c\u8cc7\u6599\u3084\u5b9f\u88c5\u8a18\u4e8b\u3001\u97f3\u97ff\u30c4\u30fc\u30eb\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3067\u3082\u5171\u901a\u3057\u3066\u8aac\u660e\u3055\u308c\u3066\u304a\u308a\u3001\u6559\u80b2\u7528\u9014\u3067\u3082\u305d\u306e\u307e\u307e\u6d3b\u7528\u3067\u304d\u308b\u5185\u5bb9\u3067\u3042\u308b[1][2][4][3]\u3002<\/p>\n\n\n\n[1] https:\/\/en.wikipedia.org\/wiki\/Spectral_centroid<\/p>\n\n\n\n[2] https:\/\/qiita.com\/Naoki0929\/items\/4c67e8265c7c8ba26b7f<\/p>\n\n\n\n[3] https:\/\/taylorandfrancis.com\/knowledge\/Engineering_and_technology\/Electrical_&_electronic_engineering\/Spectral_centroid\/<\/p>\n\n\n\n[4] https:\/\/www.mathworks.com\/help\/audio\/ug\/spectral-descriptors.html<\/p>\n\n\n\n[5] https:\/\/www.jsise.org\/wp-content\/uploads\/2023\/01\/2022_hokushinetsu_a11.pdf<\/p>\n\n\n\n[6] http:\/\/www.arch.eng.osaka-u.ac.jp\/~labo4\/www\/paper-top.files\/2010_pdf\/2010other\/10-o-02.pdf<\/p>\n\n\n\n[7] https:\/\/tsukuba.repo.nii.ac.jp\/record\/2001789\/files\/M044942.pdf<\/p>\n\n\n\n[8] https:\/\/repository.dl.itc.u-tokyo.ac.jp\/record\/54478\/files\/K-07730.pdf<\/p>\n\n\n\n[9] https:\/\/www.numberanalytics.com\/blog\/ultimate-guide-to-spectral-centroid<\/p>\n\n\n\n[10] https:\/\/www.jstage.jst.go.jp\/article\/itetr\/41.12\/0\/41.12_261\/_pdf<\/p>\n\n\n\n[11] https:\/\/www.onosokki.co.jp\/HP-WK\/c_support\/newreport\/soundquality\/soundquality_3.htm<\/p>\n\n\n\n[12] https:\/\/www.jstage.jst.go.jp\/article\/jasj\/75\/9\/75_538\/_pdf<\/p>\n\n\n\n[13] https:\/\/detail.chiebukuro.yahoo.co.jp\/qa\/question_detail\/q1221131307<\/p>\n\n\n\n[14] https:\/\/www2.mazda.com\/ja\/technology\/gihou\/2019\/wbbook\/pageindices\/index271.html<\/p>\n\n\n\n[15] https:\/\/zenn.dev\/kthrlab_blog\/articles\/4e69b7d87a2538<\/p>\n\n\n\n[16] https:\/\/www.info.kindai.ac.jp\/~takasi-i\/thesis\/2024_21-1-037-0003_N_Uga.pptx<\/p>\n\n\n\n[17] https:\/\/chocottopro.com\/?p=621<\/p>\n\n\n\n[18] https:\/\/www.info.kindai.ac.jp\/~takasi-i\/thesis\/2024_21-1-037-0003_N_Uga_thesis.pdf<\/p>\n\n\n\n[19] https:\/\/www.sciencedirect.com\/topics\/engineering\/spectral-centroid<\/p>\n\n\n\n[20] https:\/\/www.jstage.jst.go.jp\/article\/jscejam\/75\/2\/75_I_613\/_pdf<\/p>\n\n\n\n
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