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\u5b9f\u88c5\u306e\u624b\u9806\u3092\u7c21\u6f54\u306b\u793a\u3059\u30021) \u30c7\u30fc\u30bf\u53d6\u5f97\u3068\u57fa\u7dda\u8abf\u6574\uff1a\u30d5\u30ec\u30fc\u30e0\u3054\u3068\u306b\u5e73\u5747\u5024\u3092\u5f15\u3044\u3066\u30bc\u30ed\u4e2d\u5fc3\u5316\u3059\u308b\u30022) \u3057\u304d\u3044\u5024\u8a2d\u5b9a\uff1a\u00b1\u03b5\u306e\u30c7\u30c3\u30c9\u30d0\u30f3\u30c9\u3092\u8a2d\u5b9a\u3057\u3001\u305d\u306e\u7bc4\u56f2\u5185\u306e\u5909\u5316\u306f\u7121\u8996\u3059\u308b\u30023) \u7b26\u53f7\u53cd\u8ee2\u306e\u30ab\u30a6\u30f3\u30c8\uff1a\u9023\u7d9a\u30b5\u30f3\u30d7\u30eb\u306e\u7b26\u53f7\u306e\u9055\u3044\u3092\u6570\u3048\u3066\u4ea4\u5dee\u56de\u6570\u3092\u5f97\u308b\u30024) \u7387\u3078\u306e\u63db\u7b97\uff1a\u30d5\u30ec\u30fc\u30e0\u9577\u3068\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u5468\u6ce2\u6570\u304b\u30891\u79d2\u3042\u305f\u308a\uff08Hz\uff09\u306e\u30bc\u30ed\u4ea4\u5dee\u7387\u306b\u63db\u7b97\u3059\u308b\u30025) \u4f75\u7528\u7279\u5fb4\uff1a\u30d5\u30ec\u30fc\u30e0\u30a8\u30cd\u30eb\u30ae\u30fc\u3084\u30b9\u30da\u30af\u30c8\u30eb\u7cfb\u7279\u5fb4\u3068\u7d44\u307f\u5408\u308f\u305b\u3066\u3001\u8aa4\u691c\u77e5\u3092\u6291\u3048\u308b\u3002\u5b9f\u88c5\u306e\u4f8b\u793a\u3067\u306f\u3001\u30b5\u30f3\u30d7\u30eb\u306e\u7b26\u53f7\u5909\u5316\u6570\u3092\u6570\u3048\u3001\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u5468\u6ce2\u6570\u3068\u30d5\u30ec\u30fc\u30e0\u9577\u3067\u201c\u56de\u6570\/\u79d2\u201d\u3078\u63db\u7b97\u3059\u308b\u7c21\u6f54\u306a\u30b3\u30fc\u30c9\u304c\u63d0\u793a\u3055\u308c\u3066\u3044\u308b\u3002[4][11][2][3][5][7][1]\n\n\n\n
\u8a55\u4fa1\u3068\u5fdc\u7528\u306e\u88dc\u8db3\u3068\u3057\u3066\u3001\u97f3\u58f0\u3084MIR\uff08\u97f3\u697d\u60c5\u5831\u691c\u7d22\uff09\u3067\u306f\u3001\u30bc\u30ed\u4ea4\u5dee\u7387\u306f\u5468\u671f\u6027\u3084\u201c\u30ce\u30a4\u30b8\u30fc\u3055\u201d\u306e\u624b\u639b\u304b\u308a\u3068\u3057\u3066\u5b9a\u756a\u3067\u3042\u308a\u3001\u58f0\u533a\u5206\u3084\u6253\u697d\u5668\u7684\u97f3\u306e\u8b58\u5225\u306a\u3069\u3078\u306e\u8ca2\u732e\u304c\u591a\u304f\u5831\u544a\u3055\u308c\u3066\u3044\u308b\u3002\u8a08\u7b97\u91cf\u306fO(N)\u3067\u6975\u3081\u3066\u8efd\u304f\u3001\u57cb\u3081\u8fbc\u307f\u6a5f\u5668\u3084\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u51e6\u7406\u306b\u9069\u3059\u308b\u4e00\u65b9\u3001\u30ce\u30a4\u30ba\u9811\u5065\u6027\u306f\u524d\u51e6\u7406\u3068\u4f75\u7528\u8a2d\u8a08\u306b\u4f9d\u5b58\u3059\u308b\u3002\u8a2d\u5099\u76e3\u8996\u3067\u306f\u3001\u30bc\u30ed\u4ea4\u5dee\u7387\u3092\u201c\u8efd\u3044\u4e00\u6b21\u30b9\u30af\u30ea\u30fc\u30cb\u30f3\u30b0\u201d\u3068\u4f4d\u7f6e\u3065\u3051\u3001\u7570\u5e38\u5019\u88dc\u533a\u9593\u3092\u5207\u308a\u51fa\u3057\u3066\u304b\u3089\u3001\u5e2f\u57dfRMS\u3084\u30d4\u30fc\u30af\u691c\u51fa\u3001\u5305\u7d61\u30b9\u30da\u30af\u30c8\u30eb\u306a\u3069\u306e\u78ba\u5ea6\u306e\u9ad8\u3044\u624b\u6cd5\u3067\u7cbe\u67fb\u3059\u308b\u6d41\u308c\u304c\u5408\u7406\u7684\u3067\u3042\u308b\u3002[10][2][3][4][6][7]\n\n\n\n
\u6700\u5f8c\u306b\u8981\u70b9\u3092\u307e\u3068\u3081\u308b\u3002\u30bc\u30ed\u4ea4\u5dee\u7387\u306f\u300c\u6ce2\u5f62\u304c0\u3092\u307e\u305f\u3044\u3060\u983b\u5ea6\u300d\u3092\u6e2c\u308b\u7c21\u6f54\u306a\u6307\u6a19\u3067\u3001\u306a\u3081\u3089\u304b\u3055\u3084\u9ad8\u5468\u6ce2\u306e\u591a\u3055\u306b\u654f\u611f\u3067\u3042\u308b\u3002\u8a08\u7b97\u306f\u8efd\u304f\u3001\u97f3\u58f0\u306e\u6709\u58f0\/\u7121\u58f0\u97f3\u5224\u5b9a\u3084\u97f3\u533a\u9593\u691c\u51fa\u3001\u8a2d\u5099\u97f3\u306e\u7c21\u6613\u76e3\u8996\u306b\u6709\u52b9\u3060\u304c\u3001\u96d1\u97f3\u306b\u654f\u611f\u3067\u5468\u6ce2\u6570\u306e\u7279\u5b9a\u306f\u3067\u304d\u306a\u3044\u305f\u3081\u3001\u30c7\u30c3\u30c9\u30d0\u30f3\u30c9\u30fb\u57fa\u7dda\u8abf\u6574\u30fb\u30a8\u30cd\u30eb\u30ae\u30fc\u4f75\u7528\u30fb\u30b9\u30da\u30af\u30c8\u30eb\u89e3\u6790\u4f75\u7528\u304c\u5b9f\u52d9\u306e\u5b9a\u77f3\u3068\u306a\u308b\u3002\u3053\u306e\u6027\u8cea\u3092\u7406\u89e3\u3057\u3001\u3057\u304d\u3044\u5024\u3068\u524d\u51e6\u7406\u3092\u9069\u5207\u306b\u8a2d\u8a08\u3059\u308c\u3070\u3001\u30bc\u30ed\u4ea4\u5dee\u7387\u306f\u6545\u969c\u4e88\u77e5\u306b\u304a\u3051\u308b\u521d\u671f\u5146\u5019\u306e\u628a\u63e1\u3068\u201c\u6b21\u306b\u8a73\u3057\u304f\u89b3\u308b\u3079\u304d\u533a\u9593\u201d\u306e\u62bd\u51fa\u306b\u5f79\u7acb\u3064\u8efd\u91cf\u306a\u4e00\u624b\u3068\u3057\u3066\u6d3b\u7528\u3067\u304d\u308b\u3002[8][2][3][5][6][7][1]\n\n\n\n[1] https:\/\/www.sciencedirect.com\/topics\/engineering\/zero-crossing-rate<\/p>\n\n\n\n[2] https:\/\/en.wikipedia.org\/wiki\/Zero-crossing_rate<\/p>\n\n\n\n[3] https:\/\/speechprocessingbook.aalto.fi\/Representations\/Zero-crossing_rate.html<\/p>\n\n\n\n[4] https:\/\/learnius.com\/slp\/4+Speech+Signal+Representations\/1+Time-Domain\/4+Time-Domain+Features\/zero-crossing+rate<\/p>\n\n\n\n[5] https:\/\/link.springer.com\/chapter\/10.1007\/978-90-481-3660-5_47<\/p>\n\n\n\n[6] https:\/\/arxiv.org\/pdf\/2012.13096.pdf<\/p>\n\n\n\n[7] https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0957417423002397<\/p>\n\n\n\n[8] https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC12234691\/<\/p>\n\n\n\n[9] https:\/\/ieeexplore.ieee.org\/iel8\/7361\/10869829\/10810281.pdf<\/p>\n\n\n\n[10] https:\/\/ieeexplore.ieee.org\/document\/6169086\/<\/p>\n\n\n\n[11] https:\/\/openae.io\/standards\/features\/latest\/zero-crossing-rate\/<\/p>\n\n\n\n[12] https:\/\/wiki.aalto.fi\/display\/ITSP\/Zero-crossing+rate<\/p>\n\n\n\n[13] https:\/\/link.springer.com\/article\/10.1007\/s00170-023-12700-7<\/p>\n\n\n\n[14] https:\/\/koreascience.kr\/article\/CFKO199211920225702.page<\/p>\n\n\n\n[15] https:\/\/www.numberanalytics.com\/blog\/ultimate-guide-zero-crossing-rate-audio-signal-processing<\/p>\n\n\n\n[16] https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S0950705116301009<\/p>\n\n\n\n[17] https:\/\/www.iosrjournals.org\/iosr-jvlsi\/papers\/vol4-issue1\/Version-1\/A04110105.pdf[18] https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0888327025006260<\/p>\n\n\n\n
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