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\u5b9f\u88c5\u624b\u9806\u306e\u3072\u306a\u5f62\u306f\u6b21\u306e\u901a\u308a\u30021) \u30d5\u30ec\u30fc\u30e0\u5316\uff1a\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u5468\u6ce2\u6570fs\u306b\u5bfe\u3057\u3066\u3001\u7a93\u9577N\uff08\u4f8b\uff1a25ms\u76f8\u5f53\uff09\u3068\u30db\u30c3\u30d7H\uff08\u4f8b\uff1a10ms\u76f8\u5f53\uff09\u3092\u8a2d\u5b9a\u3057\u3001\u4fe1\u53f7\u3092\u30aa\u30fc\u30d0\u30fc\u30e9\u30c3\u30d7\u3067\u5206\u5272\u3059\u308b\u30022) \u7a93\u9069\u7528\uff1a\u77e9\u5f62\u3067\u3082\u3088\u3044\u304c\u3001\u7aef\u306e\u5f71\u97ff\u3092\u548c\u3089\u3052\u308b\u305f\u3081\u30cf\u30df\u30f3\u30b0\u306a\u3069\u306e\u7a93\u3092\u304b\u3051\u308b\u3068\u5b89\u5b9a\u3057\u3084\u3059\u3044\u30023) \u30a8\u30cd\u30eb\u30ae\u30fc\u8a08\u7b97\uff1a\u5404\u30d5\u30ec\u30fc\u30e0\u306e\u4e8c\u4e57\u548c\uff08\u5fc5\u8981\u306b\u5fdc\u3058N\u3067\u5272\u3063\u3066\u6b63\u898f\u5316\uff09\u3092\u6c42\u3081\u3001dB\u5909\u63db\u3059\u308b\u5834\u5408\u306f\u57fa\u6e96E0\u3092\u5b9a\u3081\u306610log10\u3067\u63db\u7b97\u3059\u308b\u30024) \u5224\u5b9a\u30ed\u30b8\u30c3\u30af\uff1a\u56fa\u5b9a\u95be\u5024\u3001\u307e\u305f\u306f\u9577\u671f\u5e73\u5747\u3068\u77ed\u671f\u306e\u6bd4\u306b\u3088\u308b\u9069\u5fdc\u95be\u5024\u3001\u6700\u5c0f\u6301\u7d9a\u30d5\u30ec\u30fc\u30e0\u6570\u306e\u6761\u4ef6\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u6d3b\u52d5\u533a\u9593\u3092\u6c7a\u5b9a\u3059\u308b\u30025) \u5f8c\u6bb5\u51e6\u7406\uff1a\u62bd\u51fa\u3057\u305f\u533a\u9593\u306b\u5bfe\u3057\u3066FFT\u3084\u5305\u7d61\u89e3\u6790\uff08\u30a8\u30f3\u30d9\u30ed\u30fc\u30d7\uff09\u306a\u3069\u3092\u9069\u7528\u3057\u3001\u539f\u56e0\u5e2f\u57df\u3084\u7279\u5fb4\u5468\u6ce2\u6570\u3092\u8b58\u5225\u3059\u308b\uff08\u77ed\u6642\u9593\u89e3\u6790\u306e\u6a19\u6e96\u7684\u6d41\u308c\uff09\u3002[13][8][12][9][1][3][6][11][2]\n\n\n\n
\u77ed\u6642\u9593\u30a8\u30cd\u30eb\u30ae\u30fc\u306e\u6027\u8cea\u3068\u9650\u754c\u3082\u660e\u78ba\u306b\u3059\u308b\u3002- \u9577\u6240\uff1a\u8a08\u7b97\u304c\u8efd\u91cf\u3067\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u306b\u5411\u304f\uff08\u30d5\u30ec\u30fc\u30e0\u306e\u4e8c\u4e57\u548c\u306e\u307f\uff09\u3001\u6642\u9593\u65b9\u5411\u306e\u5909\u5316\u306b\u654f\u611f\u3001VAD\u3084\u533a\u9593\u62bd\u51fa\u306e\u524d\u51e6\u7406\u3068\u3057\u3066\u5b9a\u8a55\u304c\u3042\u308b\u3002- \u9650\u754c\uff1a\u96d1\u97f3\u306b\u5f31\u304f\u3001\u80cc\u666f\u304c\u3046\u308b\u3055\u3044\u5834\u9762\u3067\u306f\u507d\u967d\u6027\u304c\u5897\u3048\u3084\u3059\u3044\uff08\u9069\u5fdc\u3057\u304d\u3044\u5024\u3084\u6700\u5c0f\u30a4\u30d9\u30f3\u30c8\u9577\u3067\u7de9\u548c\uff09\u3002\u307e\u305f\u3001\u3069\u306e\u5468\u6ce2\u6570\u304c\u5897\u3048\u305f\u304b\u306f\u6559\u3048\u3066\u304f\u308c\u306a\u3044\u305f\u3081\u3001\u539f\u56e0\u63a8\u5b9a\u306b\u306f\u5fc5\u305a\u30b9\u30da\u30af\u30c8\u30eb\u7cfb\u306e\u7279\u5fb4\uff08\u30d4\u30fc\u30af\u3001\u30d0\u30f3\u30c9\u30a8\u30cd\u30eb\u30ae\u30fc\u3001\u30b9\u30da\u30af\u30c8\u30eb\u91cd\u5fc3\u306a\u3069\uff09\u3068\u4f75\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002- \u7a93\u4f9d\u5b58\u6027\uff1a\u7a93\u9577\u30fb\u7a93\u5f62\u3067\u5fdc\u7b54\u304c\u5909\u308f\u308b\u3002\u77ed\u3044\u7a93\u306f\u92ed\u654f\u3060\u304c\u3070\u3089\u3064\u304d\u3001\u9577\u3044\u7a93\u306f\u5b89\u5b9a\u3060\u304c\u9045\u5ef6\u304c\u5897\u3048\u308b\u3002\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u5fdc\u3058\u305f\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0\u304c\u8981\u308b\u3002[7][8][12][9][10][3][6][11][2]\n\n\n\n
\u5b9f\u52d9\u306e\u30b3\u30c4\u3092\u3044\u304f\u3064\u304b\u3002- \u6b63\u898f\u5316\u3068\u30b9\u30b1\u30fc\u30eb\uff1a\u30d5\u30ec\u30fc\u30e0\u9577\u3067\u5272\u3063\u305f\u5e73\u5747\u30a8\u30cd\u30eb\u30ae\u30fc\u306b\u3057\u3066\u304a\u304f\u3068\u3001\u7a93\u9577\u304c\u7570\u306a\u308b\u8a2d\u5b9a\u9593\u3067\u306e\u6bd4\u8f03\u304c\u3057\u3084\u3059\u3044\u3002- \u5e73\u6ed1\u5316\uff1a\u30a8\u30cd\u30eb\u30ae\u30fc\u6642\u7cfb\u5217\u306b\u79fb\u52d5\u5e73\u5747\u306a\u3069\u306e\u8efd\u3044\u5e73\u6ed1\u3092\u304b\u3051\u308b\u3068\u8aa4\u5831\u3092\u6291\u3048\u3089\u308c\u308b\u304c\u3001\u9045\u5ef6\u3068\u898b\u843d\u3068\u3057\u306e\u30c8\u30ec\u30fc\u30c9\u30aa\u30d5\u306b\u6ce8\u610f\u3002- \u8907\u5408\u7279\u5fb4\uff1a\u30bc\u30ed\u4ea4\u5dee\u7387\uff08\u7c97\u3055\uff09\u3084\u77ed\u6642\u9593\u30a8\u30cd\u30eb\u30ae\u30fc\u3092\u540c\u6642\u306b\u7528\u3044\u308bVAD\u306f\u3001\u5358\u72ec\u3088\u308a\u5805\u7262\u306b\u306a\u308a\u3084\u3059\u3044\u3002- \u53c2\u7167\u8a2d\u8a08\uff1a\u8a55\u4fa1\u3084\u5c0e\u5165\u6642\u306f\u3001\u7a93\u9577\uff0820\u201350ms\uff09\u3001\u30aa\u30fc\u30d0\u30fc\u30e9\u30c3\u30d7\uff0850%\u524d\u5f8c\uff09\u3001\u3057\u304d\u3044\u5024\uff08\u56fa\u5b9a\u307e\u305f\u306f\u9069\u5fdc\uff09\u3001\u6700\u5c0f\u30a4\u30d9\u30f3\u30c8\u9577\uff08\u6570\u30d5\u30ec\u30fc\u30e0\uff09\u3092\u51fa\u767a\u70b9\u306b\u5c0f\u523b\u307f\u306b\u8abf\u6574\u3059\u308b\u3002[14][8][12][9][1][3][11][7]\n\n\n\n
\u307e\u3068\u3081\u3068\u3057\u3066\u3001\u77ed\u6642\u9593\u30a8\u30cd\u30eb\u30ae\u30fc\u306f\u300c\u77ed\u3044\u6642\u9593\u3054\u3068\u306e\u30d1\u30ef\u30fc\u300d\u3092\u7c21\u6f54\u306b\u6e2c\u308b\u57fa\u790e\u7279\u5fb4\u3067\u3042\u308a\u3001\u533a\u9593\u691c\u51fa\u3084\u524d\u51e6\u7406\u306e\u7b2c\u4e00\u9078\u629e\u3068\u3057\u3066\u4fe1\u983c\u6027\u304c\u9ad8\u3044\u3002\u30d5\u30ec\u30fc\u30df\u30f3\u30b0\u3068\u7a93\u306e\u8a2d\u8a08\u3001\u3057\u304d\u3044\u5024\u3068\u6301\u7d9a\u6761\u4ef6\u306e\u5de5\u592b\u3001\u305d\u3057\u3066\u5468\u6ce2\u6570\u7279\u5fb4\u3068\u306e\u4f75\u7528\u3068\u3044\u30463\u70b9\u3092\u5b88\u308c\u3070\u3001\u6545\u969c\u4e88\u77e5\u306e\u73fe\u5834\u3067\u300c\u3044\u3064\u30fb\u3069\u308c\u304f\u3089\u3044\u5f37\u3044\u5909\u5316\u304c\u8d77\u304d\u305f\u304b\u300d\u3092\u5b89\u5b9a\u306b\u6349\u3048\u308b\u571f\u53f0\u304c\u7bc9\u3051\u308b\u3002[9][1][6]\n\n\n\n[1] https:\/\/www.sciencedirect.com\/topics\/engineering\/short-time-energy<\/p>\n\n\n\n[2] https:\/\/speechprocessingbook.aalto.fi\/Representations\/Short-time_analysis.html<\/p>\n\n\n\n[3] https:\/\/dmi.unibas.ch\/fileadmin\/user_upload\/dmi\/Studium\/Computer_Science\/Vorlesung_HS20\/Lecture_Multimedia_Retrival\/5_Audio_Retrieval.pdf<\/p>\n\n\n\n[4] https:\/\/www.ijert.org\/research\/speech-analysis-in-time-and-frequency-domain-IJERTCONV3IS01005.pdf<\/p>\n\n\n\n[5] https:\/\/cse.iitkgp.ac.in\/~ksrao\/pdf\/atsp\/time-domain-speech-features.pdf<\/p>\n\n\n\n[6] https:\/\/superkogito.github.io\/blog\/2020\/02\/09\/naive_vad.html<\/p>\n\n\n\n[7] https:\/\/web.ece.ucsb.edu\/Faculty\/Rabiner\/ece259\/digital%20speech%20processing%20course\/lectures_new\/Lectures%207-8_winter_2012_6tp.pdf<\/p>\n\n\n\n[8] https:\/\/www.csd.uoc.gr\/~hy578\/2018\/Project0_Part1.pdf<\/p>\n\n\n\n[9] https:\/\/asp-eurasipjournals.springeropen.com\/articles\/10.1186\/s13634-015-0277-z<\/p>\n\n\n\n[10] https:\/\/www.sciencedirect.com\/topics\/computer-science\/voice-activity-detection<\/p>\n\n\n\n[11] https:\/\/www.renesas.com\/en\/document\/whp\/voice-activity-detection-vad-support-smart-devices<\/p>\n\n\n\n[12] https:\/\/dergipark.org.tr\/tr\/download\/article-file\/838965<\/p>\n\n\n\n[13] https:\/\/speechprocessingbook.aalto.fi\/Representations\/Short-time_processing.html<\/p>\n\n\n\n[14] https:\/\/benthamopenarchives.com\/contents\/pdf\/TOAUTOCJ\/TOAUTOCJ-6-1661.pdf<\/p>\n\n\n\n[15] https:\/\/www.jstage.jst.go.jp\/article\/ast\/38\/4\/38_E174001\/_pdf\/-char\/ja<\/p>\n\n\n\n[16] https:\/\/arxiv.org\/html\/2501.09174<\/p>\n\n\n\n[17] https:\/\/ieeexplore.ieee.org\/document\/9990492\/<\/p>\n\n\n\n[18] https:\/\/en.wikipedia.org\/wiki\/Short-time_Fourier_transform<\/p>\n\n\n\n
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