{"id":21161,"date":"2014-03-17T12:00:45","date_gmt":"2014-03-17T03:00:45","guid":{"rendered":"https:\/\/info.shimamura.co.jp\/digital\/?p=21161"},"modified":"2026-04-09T14:47:40","modified_gmt":"2026-04-09T05:47:40","slug":"21161","status":"publish","type":"post","link":"https:\/\/info.shimamura.co.jp\/digital\/support\/2014\/03\/21161","title":{"rendered":"dB\uff08\u30c7\u30b7\u30d9\u30eb\uff09\u3063\u3066\u4f55\uff1f\u97f3\u5727\u3068\u306f\uff1f\u3010\u77e5\u3063\u3066\u304a\u304f\u3068\u4fbf\u5229\u306a\u7528\u8a9e\u3011"},"content":{"rendered":"\n<figure class=\"wp-block-image\"><img decoding=\"async\" width=\"294\" height=\"314\" src=\"https:\/\/info.shimamura.co.jp\/digital\/img\/upload\/shimastaff\/2014\/ss_g-master1.jpg\" alt=\"\u97f3\u5727\u3068dB\uff08\u30c7\u30b7\u30d9\u30eb\uff09\" class=\"wp-image-21946\"\/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>\u300c\u77e5\u3063\u3066\u304a\u304f\u3068\u4fbf\u5229\u306a\u7528\u8a9e\u300d\u3068\u306f\u3001\u666e\u6bb5\u306a\u306b\u3052\u306b\u4f7f\u3063\u305f\u308a\u805e\u3044\u305f\u308a\u3057\u3066\u3044\u308b\u3051\u308c\u3069\u3082\u3001\u5b9f\u306f\u3088\u304f\u308f\u304b\u3063\u3066\u3044\u306a\u3044\u7528\u8a9e\u9054\u306e\u3053\u3068\u3067\u3059\u30fb\u30fb\u9006\u306b\u3001\u3061\u3083\u3093\u7406\u89e3\u3057\u3066\u3044\u308c\u3070\u97f3\u697d\u5236\u4f5c\u3067\u3082\u975e\u5e38\u306b\u5f79\u7acb\u3064\u4fbf\u5229\u306a\u7528\u8a9e\u3067\u3082\u3042\u308b\u306e\u3067\u3059\u306d\u30fb\u30fb\u30fb<br>\u3055\u3066\u4eca\u56de\u306f\u300c\u97f3\u306e\u5f37\u3055\u3001\u5927\u304d\u3055\u3001\u97f3\u5727\u3001\u305d\u3057\u3066<strong>dB\uff08<\/strong><strong>\u30c7\u30b7\u30d9\u30eb\uff09\u300d<\/strong>\u306b\u3064\u3044\u3066\u3002<\/p>\n\n\n\n<div class=\"blog-comment_gray\">\n<p>\u3082\u304f\u3058<\/p>\n<ul>\n<li><a href=\"\/digital\/knowledge\/2014\/03\/21161#dl001\">\u306f\u3058\u3081\u306b<\/a><\/li>\n<li><a href=\"\/digital\/knowledge\/2014\/03\/21161#dl002\">\u300c\u97f3\u306e\u5f37\u3055\u300d\u3068\u300c\u97f3\u5727\u300d\u306e\u95a2\u4fc2<\/a><\/li>\n<li><a href=\"\/digital\/knowledge\/2014\/03\/21161#dl003\"> \u97f3\u5727\u3092\u305d\u306e\u307e\u307e\u97f3\u306e\u5f37\u3055\u306b\u5f53\u3066\u306f\u3081\u308b\u3068\u5927\u5909\u306a\u3053\u3068\u306b\u30fb\u30fb<\/a><\/li>\n<li><a href=\"\/digital\/knowledge\/2014\/03\/21161\/2#dl004\">\u97f3\u306e\u5f37\u3055\u3092\u300c\u97f3\u5727\u30ec\u30d9\u30eb\u300d\u3067\u8868\u3059<\/a><\/li>\n<li><a href=\"\/digital\/knowledge\/2014\/03\/21161\/2#dl005\">\u76f8\u5bfe\u5358\u4f4d\u3068\u7d76\u5bfe\u5358\u4f4d<\/a><\/li>\n<li><a href=\"\/digital\/knowledge\/2014\/03\/21161\/3#dl006\">VU\u30e1\u30fc\u30bf\u30fc\u3084\u30d4\u30fc\u30af\u30e1\u30fc\u30bf\u30fc\u306edB<\/a><\/li>\n<li><a href=\"\/digital\/knowledge\/2014\/03\/21161\/3#dl007\">\u30af\u30a4\u30ba\u300c3dB\u4e0a\u3052\u308b\u300d\u3068\u3044\u3046\u3053\u3068\u306f\u3069\u3046\u3044\u3046\u3053\u3068\u304b\uff1f<\/a><\/li>\n<li><a href=\"\/digital\/knowledge\/2014\/03\/21161\/3#dl008\">\u4eba\u304c\u611f\u3058\u308b\u97f3\u306e\u5927\u304d\u3055\u306f\u5468\u6ce2\u6570\u306b\u3088\u3063\u3066\u7570\u306a\u308b\uff5e\u30e9\u30a6\u30c9\u30cd\u30b9\uff5e<\/a><\/li>\n<\/ul>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><a name=\"dl001\"><\/a>\u306f\u3058\u3081\u306b<\/h2>\n\n\n\n<p>\u30c7\u30b7\u30d9\u30eb<strong>\u300cdB\u300d<\/strong>\u3068\u3044\u3046\u306e\u306f<strong>\u97f3\u3060\u3051\u3067\u306a\u304f<\/strong>\u3001\u632f\u52d5\u3001\u96fb\u529b\u3001\u96fb\u6d41\u3001\u96fb\u6ce2\u306a\u3069\u8272\u3005\u306a\u5206\u91ce\u3067\u4f7f\u308f\u308c\u308b\u5358\u4f4d\u3067\u3059\u304c\u3001\u3053\u3053\u3067\u5927\u4e8b\u306a\u3053\u3068\u306f\u3001\u30c7\u30b7\u30d9\u30eb\u3068\u3044\u3046\u306e\u306f\u3001\u300c<strong>g\uff08\u30b0\u30e9\u30e0\uff09\u3084m\uff08\u30e1\u30fc\u30c8\u30eb\uff09\u3068\u3044\u3063\u305f\u7269\u7406\u91cf\u3092\u8868\u3059\u6570\u5b57\u3067\u306f\u306a\u3044<\/strong>\u300d\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002\u3058\u3083\u3042\u4f55\u304b\u3068\u3044\u3046\u3068\u3001\u300c\u3042\u308b\u57fa\u6e96\u306b\u5bfe\u3057\u3066\u5bfe\u6570\u6f14\u7b97\u3057\u305f\u76f8\u5bfe\u5024\u300d\u3067\u3042\u308b\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002\u3002\u3002\u3053\u3053\u3067\uff1f\uff1f\uff1f\u3068\u306a\u308b\u65b9\u3082\u3044\u3089\u3063\u3057\u3083\u308b\u3068\u601d\u3044\u307e\u3059\u304c\u3001\u3053\u306e\u6642\u70b9\u3067\u306f\u5927\u4e08\u592b\u3067\u3059\uff01\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u4e3b\u3068\u3057\u3066\u97f3\u697d\u5236\u4f5c\u306a\u3069\u3067\u3082\u304a\u306a\u3058\u307f\u306e\u97f3\u5727\u306e\u30ec\u30d9\u30eb\u3092\u8868\u3059<strong>\u300cdB SPL\u300d\uff08\u30c7\u30a3\u30fc\u30d3\u30fc\u30fb\u30a8\u30b9\u30d4\u30fc\u30a8\u30eb\uff09<\/strong>\u306b\u3064\u3044\u3066\u3054\u7d39\u4ecb\u3044\u305f\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u306a\u304a\u30df\u30ad\u30b7\u30f3\u30b0\u7b49\u3067\u3088\u304f<strong>\u300c\u97f3\u5727\u3092\u4e0a\u3052\u308b\u300d<\/strong>\u3068\u3044\u3046\u8868\u73fe\u304c\u4f7f\u308f\u308c\u307e\u3059\u304c\u3001\u3053\u308c\u306f\u30de\u30b9\u30bf\u30ea\u30f3\u30b0\u3084\u30c8\u30e9\u30c3\u30af\u30c0\u30a6\u30f3\u6642\u306e<strong>\u300c\u66f2\u5168\u4f53\u306e\u5e73\u5747\u7684\u306a\u97f3\u306e\u5927\u304d\u3055\u3001\u6d3e\u624b\u3055\u300d<\/strong>\u3068\u3044\u3063\u305f\u30cb\u30e5\u30a2\u30f3\u30b9\u3067\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u30b1\u30fc\u30b9\u304c\u591a\u3044\u3088\u3046\u3067\u3059\u3002\u3053\u308c\u306f\u3053\u308c\u304b\u3089\u3054\u7d39\u4ecb\u3059\u308b\u300c\u97f3\u5727\u300d\u3068\u306f\u82e5\u5e72\u610f\u5473\u304c\u7570\u306a\u308a\u307e\u3059\u306e\u3067\u3054\u6ce8\u610f\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p>\u3010\u95a2\u9023\u8a18\u4e8b\u3011<\/p>\n\n\n\n<p><a href=\"https:\/\/info.shimamura.co.jp\/digital\/special\/2014\/02\/17385\" target=\"_blank\" rel=\"noopener\">\u3010\u4eca\u3055\u3089\u805e\u3051\u306a\u3044\u7528\u8a9e\u30b7\u30ea\u30fc\u30ba\u3011\u30c0\u30a4\u30ca\u30df\u30af\u30b9\u7cfb\u30a8\u30d5\u30a7\u30af\u30bf\u30fc\uff1a\u30b3\u30f3\u30d7\u3001\u30ea\u30df\u30c3\u30bf\u30fc<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><a name=\"dl002\"><\/a>\u300c\u97f3\u306e\u5f37\u3055\u300d\u3068\u300c\u97f3\u5727\u300d\u306e\u95a2\u4fc2<\/h2>\n\n\n\n<p>\u305d\u308c\u3067\u306f\u307e\u305a\u57fa\u672c\u3092\u304a\u3055\u3089\u3044\u3057\u307e\u3057\u3087\u3046\u3002\u3068\u3053\u308d\u3069\u3053\u308d\u51fa\u3066\u304f\u308b\u5c02\u9580\u7528\u8a9e\u306f<strong>\u306a\u3093\u3068\u306a\u304f\u53d7\u3051\u6d41\u3057\u3066\u9802\u3044\u3066\u7d50\u69cb\u3067\u3059<\/strong>\uff5e<\/p>\n\n\n\n<p>\u3055\u3066\u3001\u97f3\u306f\u4e3b\u306b\u300c\u7a7a\u6c17\u306e\u5727\u529b\u300d\u304c\u5909\u5316\u3059\u308b\u73fe\u8c61\u3067\u3059\u306e\u3067\u3001\u305d\u306e\u5f37\u3055\u3092\u901a\u5e38\u306f<strong>\u300c\u97f3\u5727\u300d<\/strong>\u3067\u8868\u3057\u307e\u3059\u3002\u5358\u4f4d\u306f\u300c\u30d1\u30b9\u30ab\u30eb\uff08Pa\uff09\u300d\u3067\u3059\u3002\u300c\u30d1\u30b9\u30ab\u30eb\u300d\u306f\u5929\u6c17\u4e88\u5831\u3067\u304a\u306a\u3058\u307f\u300c\u53f0\u98a8\u306e\u4e2d\u5fc3\u6c17\u5727\u306f905<strong>\u30d8\u30af\u30c8\u30d1\u30b9\u30ab\u30eb<\/strong> (hPa) \u300d\u3068\u3044\u3046\u30a2\u30ec\u3067\u3059\u306d\uff08\u203b\uff09\u30fb\u30fb\u30fb\u305f\u3060\u305d\u308c\u304c\u3044\u3063\u305f\u3044\u306a\u3093\u307c\u306e\u3082\u306e\u306a\u306e\u304b\u4e0d\u660e\u3067\u3059\u304c\u30fb\u30fb\u30fb\u30fb<\/p>\n\n\n\n<p>\u203b\u30d8\u30af\u30c8\uff1d100\u3068\u3044\u3046\u610f\u5473<\/p>\n\n\n\n<p><img decoding=\"async\" class=\"alignnone wp-image-21534\" src=\"https:\/\/info.shimamura.co.jp\/digital\/img\/upload\/shimastaff\/2014\/220px-Man-Yi_12_july_2007_0505Z.jpg\" alt=\"220px-Man-Yi_12_july_2007_0505Z\" width=\"132\" height=\"172\"><a href=\"http:\/\/ja.wikipedia.org\/wiki\/%E5%8F%B0%E9%A2%A8%E3%81%AE%E7%9B%AE\" target=\"_blank\" rel=\"noopener\">wikipedia<\/a><\/p>\n\n\n\n<div 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scrolling=\"no\"><\/iframe><\/p>\n\n\n\n<p>\u30de\u30a4\u30af\u30ed\uff08\u03bc\uff09\u3068\u3044\u3046\u306e\u306f<strong>\u300c\u767e\u4e07\u5206\u306e\uff11\u300d<\/strong>\u3068\u3044\u3046\u610f\u5473\u3067\u3001\u3082\u3057\u9577\u3055\u3067\u300c1\u03bc\u30e1\u30fc\u30c8\u30eb\u300d\u3060\u3063\u305f\u30890.000001\u30e1\u30fc\u30c8\u30eb\u30fb\u30fb\u3059\u306a\u308f\u30610.001\u30df\u30ea\u30e1\u30fc\u30c8\u30eb\u30fb\u30fb\u7d30\u304b\u3044\u3053\u3068\u306f\u3055\u3066\u304a\u304d\u30fb\u30fb\u30fb\u3068\u306b\u304b\u304f\u300c\u5c0f\u3055\u3044\u6570\u300d\u3067\u3042\u308b\u3053\u3068\u304c\u308f\u304b\u3063\u3066\u3044\u305f\u3060\u3051\u308c\u3070\u826f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u300c\u97f3\u306e\u5f37\u3055\u300d<\/strong>\u306f\u97f3\u5727\u306e\u30ec\u30d9\u30eb\u304c\u4e0a\u304c\u308b\u306b\u5f93\u3044\u4e00\u5b9a\u306e\u5272\u5408\u3067\u97f3\u304c\u5f37\u304f\u611f\u3058\u3089\u308c\u308b\u3068\u3044\u3046\u306e\u306f\u7406\u89e3\u3067\u304d\u308b\u3068\u601d\u3044\u307e\u3059\u3002\u554f\u984c\u306f\u97f3\u306e\u5f37\u3055\u306e\u8868\u3057\u65b9\u306a\u3093\u3067\u3059\u306d\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">&nbsp;<a name=\"dl003\"><\/a>\u97f3\u5727\u3092\u305d\u306e\u307e\u307e\u97f3\u306e\u5f37\u3055\u306b\u5f53\u3066\u306f\u3081\u308b\u3068\u5927\u5909\u306a\u3053\u3068\u306b\u30fb\u30fb<\/h2>\n\n\n\n<p>\u3055\u3066\u3055\u3066\u97f3\u5727\u30d1\u30b9\u30ab\u30eb\u304f\u3093\u306b\u8a71\u306f\u623b\u308a\u307e\u3059\u304c\u3001\u4eba\u304c\u611f\u3058\u308b\u3053\u3068\u306e\u3067\u304d\u308b\u97f3\u5727\u306f<strong>\u300c20\u03bcPa\u301c20Pa\u300d<\/strong>\u3068\u8a00\u308f\u308c\u3066\u3044\u307e\u3059\u300220Pa\u3068\u8a00\u308f\u308c\u3066\u3082\u30d4\u30f3\u3068\u304d\u307e\u305b\u3093\u304c\u300c\u8981\u585e\u306e\u3054\u3068\u304f\u7a4d\u307f\u4e0a\u3052\u305f\u30de\u30fc\u30b7\u30e3\u30eb\u30fb\u30a2\u30f3\u30d7\u306b\u56f2\u307e\u308c\u30dc\u30ea\u30e5\u30fc\u30e0\u5168\u958b\u3067\u30ae\u30bf\u30fc\u304b\u304d\u9cf4\u3089\u3057\u305f\u97f3\u300d\u3068\u304b\u300c\u30b8\u30a7\u30c3\u30c8\u6a5f\u30a8\u30f3\u30b8\u30f3\u306e\u4ed8\u8fd1\u300d\u3068\u3044\u3063\u305f\u8010\u3048\u96e3\u3044\u97f3\u3067\u3059\u30fb\u30fb\u30fb\u305f\u3060\u305d\u308c\u3067\u30821\u6c17\u5727\u3068\u6bd4\u8f03\u3059\u308b\u30685\u4e07\u5206\u306e\uff11\u304f\u3089\u3044\u306e<strong>\u300c\u3054\u304f\u308f\u305a\u304b\u306a\uff08\uff01\uff09\u300d<\/strong>\u7a7a\u6c17\u632f\u52d5\u306b\u3059\u304e\u306a\u3044\u308f\u3051\u3067\u3059\u304c\u30fb\u30fb\u30fb\u30fb<\/p>\n\n\n\n<p>\u3055\u3066\u6700\u5c0f\u3068\u6700\u5927\u306e\u97f3\u5727\u306e\u6bd4\u306f\u3069\u308c\u304f\u3089\u3044\u304b\u3068\u3044\u3046\u3068<\/p>\n\n\n\n<div class=\"blog-comment_gray\">\n<h3>1\uff1a1,000,000<\/h3>\n<\/div>\n\n\n\n<p>\u6700\u5927\u97f3\u5727\u306f\u6700\u5c0f\u97f3\u5727\u306e\u306a\u3093\u3068<strong>\u300c100\u4e07\u500d\u300d<\/strong>\u30fb\u30fb\u4eba\u9593\u306f\u3053\u308c\u307b\u3069\u306e\u97f3\u5727\u5dee\u3092\u611f\u3058\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u306e\u3067\u3059\u306d\u3002\u3068\u3053\u308d\u3067<strong>\u300c\u97f3\u5727\u306e\u30ec\u30d9\u30eb\u304c\u4e0a\u304c\u308b\u306b\u5f93\u3044\u4e00\u5b9a\u306e\u5272\u5408\u3067\u97f3\u304c\u5f37\u304f\u611f\u3058\u3089\u308c\u308b\u300d<\/strong>\u3068\u66f8\u304d\u307e\u3057\u305f\u304c\u3001<\/p>\n\n\n\n<p><strong>\u3061\u306a\u307f\u306b\u300c\u97f3\u306e\u5f37\u3055\u306f\u97f3\u5727\u306e2\u4e57\u306b\u6bd4\u4f8b\u3059\u308b\u300d<\/strong>\u3068\u3044\u3046\u6027\u8cea\uff08\u97f3\u572710\u500d\u3067\u97f3\u306e\u5f37\u3055\u306f100\u500d\uff09\u304c\u3042\u308b\u306e\u3067\u3001\u97f3\u5727\u6700\u5c0f\u3068\u6700\u5927\u306e\u5dee\u3092<strong>\u300c\u97f3\u306e\u5f37\u3055\u300d<\/strong>\u3067\u8868\u73fe\u3057\u305f\u5834\u5408\u306f<\/p>\n\n\n\n<div class=\"blog-comment_gray\"><strong>1:1,000,000,000,000<\/strong>\uff08\u30bc\u30ed\u306e\u6570\u3042\u3063\u3066\u308b\u306e\u3067\u3057\u3087\u3046\u304b\uff1f\uff09<\/div>\n\n\n\n<p><strong>\u300c1\uff1a1\u5146\u300d<\/strong>\u3068\u3044\u3046\u3068\u3093\u3067\u3082\u306a\u3044\u6bd4\u306b\u306a\u308b\u308f\u3051\u3067\u3059\u306d<\/p>\n\n\n\n<p>\u3057\u304b\u3057\u3001\u3044\u3056\u97f3\u306e\u5f37\u3055\u3092\u8868\u73fe\u3059\u308b\u969b\u306b<strong>\u300cA\u306f389,923\u3001B\u306f765,290\u30fb\u30fb\u30fb\u300d<\/strong>\u3068\u304b\u8a00\u308f\u308c\u3066\u3082\u305d\u308a\u3083\u30fc\u56f0\u308b\u3057\u3082\u306e\u3059\u3054\u304f\u4e0d\u4fbf\u3001\u300c1\u5146\u5186\u3067\u3046\u307e\u3044\u68d2\u3044\u304f\u3064\u8cb7\u3048\u308b\u304b\u306a\u301c\u300d\u307f\u305f\u3044\u306a\u8a71\u3067\u73fe\u5b9f\u7684\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p><img decoding=\"async\" class=\"alignnone wp-image-21583\" src=\"https:\/\/info.shimamura.co.jp\/digital\/img\/upload\/shimastaff\/2014\/20130927100644-500x375.jpg\" alt=\"20130927100644\" width=\"400\" height=\"300\" srcset=\"https:\/\/info.shimamura.co.jp\/digital\/img\/upload\/shimastaff\/2014\/20130927100644-500x375.jpg 500w, https:\/\/info.shimamura.co.jp\/digital\/img\/upload\/shimastaff\/2014\/20130927100644.jpg 560w\" sizes=\"(max-width: 400px) 100vw, 400px\" \/><br><strong>\u5cf6\u6751\u697d\u5668\u3046\u307e\u3044\u68d2\u2191<\/strong><\/p>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306b<strong>\u300c\u4f55\u3005\u306f\u4f55\u3005\u306e\u4f55\u500d\u3067\u3042\u308b\u300d\u3068\u3044\u3063\u305f\u8868\u73fe\u3067\u306f\u73fe\u5b9f\u7684\u3067\u306a\u3044<\/strong>\u5834\u5408\u3001\u6bd4\u306e\u5bfe\u6570\u3068\u3044\u3046\u3082\u306e\u3067\u8868\u3059<strong>\u300c\u30ec\u30d9\u30eb\u8868\u73fe\u300d<\/strong>\u3068\u3044\u3046\u3082\u306e\u304c\u3042\u308b\u306e\u3067\u3059\u306d\u3002<\/p>\n\n\n\n<p>\u305d\u3057\u3066\u305d\u306e\u4ee3\u8868\u304c<strong>\u300c\u30c7\u30b7\u30d9\u30eb\u300d<\/strong>\u3068\u3044\u3046\u5358\u4f4d\u3002\u97f3\u5727\u3092\u6bd4\u8f03\u3059\u308b\u969b\u306b\u4f7f\u308f\u308c\u3066\u3044\u308b\u306e\u306f\u305d\u306e\u4e00\u7a2e\u3067\u3042\u308b<strong>\u300cdB SPL\u300d<strong>\uff08\u30c7\u30a3\u30fc\u30d3\u30fc\u30fb\u30a8\u30b9\u30d4\u30fc\u30a8\u30eb\uff09<\/strong><\/strong>\u3068\u3044\u3046\u3082\u306e\u3067\u3059\u3002SPL\u306f\u97f3\u5727\u30ec\u30d9\u30eb\uff08Sound Pressure Level\uff09\u300d\u306e\u7565\u8a9e\u3067\u3059\u3002<\/p>\n\n\n\n<div class=\"blog-comment_gray\">\n<p>\u3082\u304f\u3058<\/p>\n<ul>\n<li><a href=\"\/digital\/knowledge\/2014\/03\/21161#dl001\">\u306f\u3058\u3081\u306b<\/a><\/li>\n<li><a href=\"\/digital\/knowledge\/2014\/03\/21161#dl002\">\u300c\u97f3\u306e\u5f37\u3055\u300d\u3068\u300c\u97f3\u5727\u300d\u306e\u95a2\u4fc2<\/a><\/li>\n<li><a href=\"\/digital\/knowledge\/2014\/03\/21161#dl003\"> \u97f3\u5727\u3092\u305d\u306e\u307e\u307e\u97f3\u306e\u5f37\u3055\u306b\u5f53\u3066\u306f\u3081\u308b\u3068\u5927\u5909\u306a\u3053\u3068\u306b\u30fb\u30fb<\/a><\/li>\n<li><a href=\"\/digital\/knowledge\/2014\/03\/21161\/2#dl004\">\u97f3\u306e\u5f37\u3055\u3092\u300c\u97f3\u5727\u30ec\u30d9\u30eb\u300d\u3067\u8868\u3059<\/a><\/li>\n<li><a href=\"\/digital\/knowledge\/2014\/03\/21161\/2#dl005\">\u76f8\u5bfe\u5358\u4f4d\u3068\u7d76\u5bfe\u5358\u4f4d<\/a><\/li>\n<li><a href=\"\/digital\/knowledge\/2014\/03\/21161\/3#dl006\">VU\u30e1\u30fc\u30bf\u30fc\u3084\u30d4\u30fc\u30af\u30e1\u30fc\u30bf\u30fc\u306edB<\/a><\/li>\n<li><a href=\"\/digital\/knowledge\/2014\/03\/21161\/3#dl007\">\u30af\u30a4\u30ba\u300c3dB\u4e0a\u3052\u308b\u300d\u3068\u3044\u3046\u3053\u3068\u306f\u3069\u3046\u3044\u3046\u3053\u3068\u304b\uff1f<\/a><\/li>\n<li><a href=\"\/digital\/knowledge\/2014\/03\/21161\/3#dl008\">\u4eba\u304c\u611f\u3058\u308b\u97f3\u306e\u5927\u304d\u3055\u306f\u5468\u6ce2\u6570\u306b\u3088\u3063\u3066\u7570\u306a\u308b\uff5e\u30e9\u30a6\u30c9\u30cd\u30b9\uff5e<\/a><\/li>\n<\/ul>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><a name=\"dl004\"><\/a>\u3000dB SPL\u3000\u97f3\u306e\u5f37\u3055\u3092\u300c\u97f3\u5727\u30ec\u30d9\u30eb\u300d\u3067\u8868\u3059<\/h2>\n\n\n\n<p>\u3055\u3066\u8272\u3005\u6570\u5b57\u304c\u51fa\u3066\u304d\u3066\u5927\u5909\u3067\u3059\u304c\u3001\u3082\u3046\u5c11\u3057\u9811\u5f35\u308c\u3070<strong>\u300c\u30b9\u30df\u30de\u30bb\u301c\u30f3\u3001\u8fd4\u3057\u3042\u30683\u30c7\u30b7\u4e0a\u3052\u3066\u304f\u3060\u3055\u301c\u3044\u300d<\/strong>\u3068\u3044\u3046\u7981\u53e5\u306e\u610f\u5473\u304c\u308f\u304b\u308b\u3088\u3046\u306b\u306a\u308b\u304b\u3082\u30fb\u30fb\u304c\u3093\u3070\u308d\u30fc\u30fb\u30fb<\/p>\n\n\n\n<p><strong>\u300cdB\u300d\u306e<\/strong>d\u306f\u5c0f\u6587\u5b57\u3001B\u306f\u5927\u6587\u5b57\u3067\u3059\u3002\u97f3\u5727\u30ec\u30d9\u30eb\u3092\u6271\u3046\u306e\u306f\u6b63\u3057\u304f\u306f<strong>\u300cdB SPL\u300d<strong>\uff08\u30c7\u30a3\u30fc\u30d3\u30fc\u30fb\u30a8\u30b9\u30d4\u30fc\u30a8\u30eb\uff09<\/strong><\/strong>\u3044\u3046\u5358\u4f4d\u3067\u3059\u304c\u3001<strong>SPL<\/strong>\u304c\u7701\u7565\u3055\u308c\u308b\u5834\u5408\u3082\u3042\u308a\u307e\u3059\uff08\u3053\u308c\u304c\u52d8\u9055\u3044\u306e\u5143\u3067\u3082\u3042\u308a\u307e\u3059\u304c\uff09<\/p>\n\n\n\n<p>\u300cdB\u300d\u306f\u96fb\u8a71\u3092\u767a\u660e\u3057\u305f<a href=\"http:\/\/ja.wikipedia.org\/wiki\/%E3%82%A2%E3%83%AC%E3%82%AF%E3%82%B5%E3%83%B3%E3%83%80%E3%83%BC%E3%83%BB%E3%82%B0%E3%83%A9%E3%83%8F%E3%83%A0%E3%83%BB%E3%83%99%E3%83%AB\" target=\"_blank\" rel=\"noopener\">\u30a2\u30ec\u30ad\u30b5\u30f3\u30c0\u30fc\u30fb\u30b0\u30e9\u30cf\u30e0\u30fb\u30d9\u30eb<\/a>\u306b\u3061\u306a\u3093\u3060\u300cB\uff08\u30d9\u30eb\uff09\u300d\u3068\u3044\u3046\u5358\u4f4d\uff08\u96fb\u8a71\u7dda\u3067\u9001\u53d7\u4fe1\u3059\u308b\u96fb\u529b\u3092\u6271\u3046\u969b\u306b\u4f7f\u308f\u308c\u305f\u306e\u304c\u59cb\u307e\u308a\uff09\u306b\u3001\u300c\u5341\u5206\u306e\u4e00\u300d\u3068\u3044\u3046\u610f\u5473\u306e\u300cd\uff08\u30c7\u30b7\uff09\u300d\u3092\u304f\u3063\u3064\u3051\u305f\u8868\u8a18\u65b9\u6cd5\u3067\u3059\u3002\u7686\u3055\u3093\u3082<strong>\u300c\u306a\u3093\u3067&#8221; \u30c7\u30b7 &#8220;\u306a\u3093\u3066\u4f7f\u3046\u306e\uff1f\u300d<\/strong>\u3068\u601d\u3063\u305f\u306b\u9055\u3044\u306a\u3044<strong>\u300c\u30c7\u30b7\u30ea\u30c3\u30c8\u30eb\uff08dl\uff09\u300d<\/strong>\u306e\u30c7\u30b7\u3068\u540c\u3058\u3067\u3057\u30fb\u30fb\uff081dl=100ml\u3067\u3059\uff09<\/p>\n\n\n\n<p>\u307e\u305a\u3053\u306edB\u306f\u3001<strong>\u300c\u5bfe\u6570\uff08\u305f\u3044\u3059\u3046\uff09\u300d<\/strong>\u3068\u3044\u3063\u3066<strong>\u300c\u3042\u308b\u6570\uff1d\u3042\u308b\u6570\u306e\u4f55\u4e57\u3067\u3042\u308b\u300d<\/strong>\u3068\u3044\u3046\u8868\u73fe\u65b9\u6cd5\u3067\u4f7f\u7528\u3055\u308c\u308b\u5358\u4f4d\u3067\u3059\u3002\u3055\u3066\u300c\u5bfe\u6570\u300d\u3068\u3044\u308f\u308c\u3066\u3082\u5168\u304f\u30d4\u30f3\u3068\u304d\u307e\u305b\u3093\u304c\u3001\u305f\u3068\u3048\u3070<\/p>\n\n\n\n<div class=\"blog-comment_gray\"><strong>10<sup>2<\/sup>\uff1d100<\/strong><\/div>\n\n\n\n<p>\u3067\u3059\u304c\u3001\u3053\u306e\u300c10\u30922\u4e57\u3059\u308b\u3068100\u306b\u306a\u308a\u307e\u3059\u300d\u3092\u9006\u306b\u300c10\u3092\u4f55\u4e57\u3059\u308c\u3070100\u306b\u306a\u308a\u307e\u3059\u304b\uff1f\u30fb\u30fb\u30fb\u305d\u3046\u30012\u3067\u3059\u306d\uff01\u300d\u3068\u8a00\u3044\u63db\u3048\u305f\u306e\u304c<\/p>\n\n\n\n<div class=\"blog-comment_gray\"><strong>2\uff1dlog<sub>10<\/sub>100\u3000\uff08<\/strong>2\u30a4\u30b3\u30fc\u30eb\u3001\u308d\u3050\u3058\u3085\u3046\u3066\u3044\u3072\u3083\u304f\uff09<\/div>\n\n\n\n<p>\u30fb\u30fb\u30fb\u3068\u3001\u3044\u304d\u306a\u308a\u9a5a\u304b\u305b\u3066\u30b9\u30df\u30de\u30bb\u30f3\u3002<\/p>\n\n\n\n<p>\u3055\u3066\u3053\u306e\u81ea\u4e57\u3059\u308b\u6570\u5b57\uff08\u5e95\u6570\u3068\u3044\u3044\u307e\u3059\uff09\u304c\u300clog<sub>10<\/sub>\u300d\u306e\u30b1\u30fc\u30b9\u306f<strong>\u300c\u5e38\u7528\u5bfe\u6570\u300d<\/strong>\u3068\u3044\u3044\u307e\u3059\u300210\u9032\u6cd5\u3068\u76f8\u6027\u3088\u304f\u3066\u3088\u304f\u4f7f\u3046\u304b\u3089\u300c\u5e38\u7528\u300d\u3067\u3059\uff0810\u3092\u7701\u3044\u3066\u5358\u306b\u300clog\u300d\u3068\u8868\u8a18\u3055\u308c\u308b\u5834\u5408\u3082\u3042\u308a\u307e\u3059)\u3002<\/p>\n\n\n\n<p>\u3059\u308b\u3068\u4ee5\u4e0b\u306e\u8868\u73fe\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"blog-comment_gray\">\n<ul>\n<li><strong>log<sub>10<\/sub>10\u3000\u21d2\u3000\u5e38\u7528\u5bfe\u6570\u3067\u8868\u3059\u3068\u300c1\u300d\u30fb\u30fb10<sup>1<\/sup>\u3060\u304b\u3089<\/strong><\/li>\n<li><strong>log<sub>10<\/sub>100\u3000\u21d2\u3000\u5e38\u7528\u5bfe\u6570\u3067\u8868\u3059\u3068\u300c2\u300d\u30fb\u30fb10<sup>2<\/sup>\u3060\u304b\u3089<\/strong><\/li>\n<li><strong>log<sub>10<\/sub>1000\u21d2\u3000\u5e38\u7528\u5bfe\u6570\u3067\u8868\u3059\u3068\u300c3\u300d\u30fb\u30fb10<sup>3<\/sup>\u3060\u304b\u3089<\/strong><\/li>\n<\/ul>\n<\/div>\n\n\n\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-21360\" src=\"https:\/\/info.shimamura.co.jp\/digital\/img\/upload\/shimastaff\/2014\/350px-Graph_of_common_logarithm.png\" alt=\"350px-Graph_of_common_logarithm\" width=\"350\" height=\"217\"><a href=\"http:\/\/ja.wikipedia.org\/wiki\/%E5%B8%B8%E7%94%A8%E5%AF%BE%E6%95%B0\" target=\"_blank\" rel=\"noopener\">Wikipedia<\/a><\/p>\n\n\n\n<p>\u3059\u3067\u306b\u300c\uff1f\uff1f\uff1f\u300d\u3068\u3044\u3046\u65b9\u3082<\/p>\n\n\n\n<div class=\"blog-comment_gray\"><strong>\u300c1000\u3068\u304b10000\u3068\u304b\u3044\u3046\u30c7\u30ab\u3044\u6570\u5b57\u304c\u3001\u4e00\u6841\u3067\u8868\u3059\u3053\u3068\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u3063\u305f\u300d<\/strong><\/div>\n\n\n\n<p>\u3068\u3044\u3046\u3053\u3068\u304c\u304a\u5206\u304b\u308a\u3044\u305f\u3060\u3051\u308c\u3070\u3051\u3063\u3053\u3046\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u300cdB SPL\u300d<\/h2>\n\n\n\n<p>\u305d\u3057\u3066\u57fa\u6e96\u5024p<sub>0<\/sub>(20\u03bcPa)\u306b\u5bfe\u3059\u308bp(\u03bcPa)\u306e\u6bd4\u3092\u8868\u3059\u306e\u304c\u3000B\uff08\u30d9\u30eb\uff09\u3068\u3044\u3046\u5358\u4f4d\u3067\u3059\u304c\u3001\u3053\u308c\u3060\u3068\u4f7f\u7528\u983b\u5ea6\u304c\u9ad8\u304410\u500d\u672a\u6e80\u306e\u6570\u5b57\u304c\u5c0f\u6570\u70b9\u8868\u793a\u306b\u306a\u308a\u4f7f\u3044\u3065\u3089\u3044\u306e\u3067\u3001\u3053\u308c\u309210\u5206\u306e\u4e00\u306b\u3057\u305fdB\uff08\u30c7\u30b7\u30d9\u30eb\uff09\u3092\u4f7f\u3044\u307e\u3059\u3002\u57fa\u6e96\u97f3\u5727p<sub>0<\/sub>\uff0820\u03bcPa\uff09\u3068\u5bfe\u8c61\u3068\u306a\u308b\u97f3\u5727p\uff08\u203b\uff09\u306e\u30ec\u30d9\u30eb\u8868\u73fe\u306f<\/p>\n\n\n\n<p><strong>20\u00d7log(P\/P<sub>0<\/sub>)\u3000[dB]<strong><br><\/strong><\/strong><\/p>\n\n\n\n<p>\u3068\u8868\u3059\u3053\u3068\u306b\u3057\u3066\u3001\u3053\u308c\u3092<strong>\u300c\u97f3\u5727\u30ec\u30d9\u30eb\u300d<\/strong>\u3068\u547c\u3073\u307e\u3059\u3002\u3059\u308b\u3068A\u3068B\u306e\u5f37\u3055\u306e\u6bd4\u306f\u4e0b\u8a18\u306e\u3088\u3046\u306b\u8868\u73fe\u3067\u304d\u308b\u308f\u3051\u3067\u3059\u3002<\/p>\n\n\n\n<p>A\u3068B\u3092\u6bd4\u3079\u3066<\/p>\n\n\n\n<div class=\"blog-comment_gray\">\n<ul>\n<li><strong>P<\/strong>\u304c<strong>P<sub>0<\/sub><\/strong>\u306e1\u500d\u3060\u3063\u305f\u3089\uff1a20\u00d7log<sub>10<\/sub>1&nbsp; \uff1d20\u00d70\uff1d0\u30c7\u30b7\u30d9\u30eb\u3000\uff0810\u306e0\u4e57\u306f1\uff09<\/li>\n<li><strong>P<\/strong>\u304c<strong>P<sub>0<\/sub><\/strong>\u306e10\u500d\u3060\u3063\u305f\u3089\uff1a20\u00d7log<sub>10<\/sub>10\uff1d20\u00d71\uff1d20\u30c7\u30b7\u30d9\u30eb<\/li>\n<li><strong>P<\/strong>\u304c<strong>P<sub>0<\/sub><\/strong>\u306e100\u500d\u3060\u3063\u305f\u3089\uff1a20\u00d7log<sub>10<\/sub>100\uff1d20\u00d72\uff1d40\u30c7\u30b7\u30d9\u30eb<\/li>\n<li><strong>P<\/strong>\u304c<strong>P<sub>0<\/sub><\/strong>\u306e1000\u500d\u3060\u3063\u305f\u3089\uff1a20\u00d7log<sub>10<\/sub>1000\uff1d20\u00d73\uff1d60\u30c7\u30b7\u30d9\u30eb<\/li>\n<li><strong>P<\/strong>\u304c<strong>P<sub>0<\/sub><\/strong>\u306e10000\u500d\u3060\u3063\u305f\u3089\uff1a20\u00d7log<sub>10<\/sub>10000\uff1d20\u00d74\uff1d80\u30c7\u30b7\u30d9\u30eb<\/li>\n<\/ul>\n<\/div>\n\n\n\n<p>\u3053\u308c\u3067\u3001\u5148\u307b\u3069\u306e1:100\u4e07\u3068\u3044\u3046\u97f3\u5727\u306e\u3079\u3089\u307c\u3046\u306b\u5e45\u306e\u5e83\u3044\u5dee\u3082\u3001\u3053\u306e\u5bfe\u6570\u3092\u4f7f\u3046\u3053\u3068\u3067\u5c11\u306a\u3044\u6841\u306e\u6570\u5b57\u3067\u8868\u73fe\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308b\u308f\u3051\u3067\u3059\u306d\u3002<\/p>\n\n\n\n<p>\u306a\u3093\u3060\u304b\u3088\u304f\u308f\u304b\u3089\u306a\u3044\u3051\u3069\u300c\u5bfe\u6570\u300d\u3063\u3066\u306e\u306f\u4fbf\u5229\u306a\u611f\u3058\u304c\u3057\u307e\u305b\u3093\u304b\uff1f\u305f\u3060\u3057\u5bfe\u6570\u3068\u3044\u3046\u306e\u306f\u5358\u7d14\u306b\u5f15\u304d\u7b97\u8db3\u3057\u7b97\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<div class=\"blog-comment_gray\">\n<h3><span style=\"text-decoration: underline;\"><strong>\u91cd\u8981\uff1a40\u30c7\u30b7\u30d9\u30eb\u306f20\u30c7\u30b7\u30d9\u30eb\u306e2\u500d\u3067\u306f\u306a\u3044\uff01<\/strong><\/span><\/h3>\n<\/div>\n\n\n\n<p>\u3068\u3044\u3046\u3053\u3068\u3092\u982d\u306e\u306a\u304b\u306b\u305d\u3063\u3068\u3057\u307e\u3044\u3053\u3093\u3067\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p><strong>\u203b\u9a12\u97f3\u306e\u6e2c\u5b9a\u7b49\u3067\u4f7f\u7528\u3055\u308c\u308bdB\u3067\u306f\u3001\u4eba\u9593\u306e\u8074\u899a\u7279\u6027\uff08\u5f8c\u8ff0\uff09\u3092\u52a0\u5473\u3057\u305f\u300c\u9a12\u97f3\u30ec\u30d9\u30eb\u300d\u304c\u7528\u3044\u3089\u308c\u307e\u3059\u3002<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><a name=\"dl005\"><\/a>\u76f8\u5bfe\u5358\u4f4d\u3068\u7d76\u5bfe\u5358\u4f4d<\/h2>\n\n\n\n<p>\u300cdB\u300d\u306f\u97f3\u5727\u4ee5\u5916\u306b\u3082\u96fb\u5727\u3001\u96fb\u529b\u7b49\u3092\u6271\u3046\u969b\u306b\u3082\u4f7f\u308f\u308c\u307e\u3059\u304c\u3001\u5927\u4e8b\u306a\u306e\u306f<strong>\u300c\u76f8\u5bfe\u5358\u4f4d\u306edB\u300d<\/strong>\u3068<strong>\u300c\u7d76\u5bfe\u5358\u4f4d\u306edB\u300d<\/strong>\u304c\u3042\u308b\u3068\u3044\u3046\u3053\u3068\u3002\u7c21\u5358\u306b\u8a00\u3046\u3068<\/p>\n\n\n\n<div class=\"blog-comment_gray\">\n<ul>\n<li><strong>\u300cA\u306fB\u3088\u308a\u25efdB\u300d\u3068\u3044\u3046\u306e\u304c\u76f8\u5bfe\u5358\u4f4d<\/strong><\/li>\n<li><strong>\u300cA\u306f\u25efdB\u300d\u3068\u3044\u3046\u306e\u304c\u7d76\u5bfe\u5358\u4f4d<\/strong><\/li>\n<\/ul>\n<\/div>\n\n\n\n<p><strong><span style=\"text-decoration: underline;\">\u672c\u6765\u30c7\u30b7\u30d9\u30eb\u306f2\u3064\u306e\u91cf\u306e\u6bd4\u3092\u8868\u3059\u3082\u306e\u3067\u3001\u76f8\u5bfe\u5358\u4f4d\u306a\u306e\u3067\u3059\u304c\u3001\u97f3\u5727\u30ec\u30d9\u30eb\u306e\u3088\u3046\u306b\u4e00\u65b9\u3092\u57fa\u6e96\u3068\u306a\u308b\u5024\u306b\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u3067\u3001\u7d76\u5bfe\u5358\u4f4d\u3068\u3057\u3066\u3082\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u308f\u3051\u3067\u3059\u3002<\/span><\/strong><\/p>\n\n\n\n<p>\u3053\u3053\u3067\u306e\u97f3\u5727\u30ec\u30d9\u30eb\u306e\u5834\u5408\u306f\u7d76\u5bfe\u5358\u4f4d<strong>\u300cdB SPL\u300d<\/strong>\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u7d76\u5bfe\u5358\u4f4d\u3068\u3057\u3066dB\u304c\u4f7f\u7528\u3055\u308c\u308b\u4f8b<\/strong><\/p>\n\n\n\n<p>\u97f3\u306e\u5f37\u3055\u306e\u3081\u3084\u3059\uff08\u3042\u304f\u307e\u3067\u300c\u3081\u3084\u3059\u300d\uff09<\/p>\n\n\n\n<div class=\"blog-comment_gray\">\n<ul>\n<li><strong>120\uff1a\u30b8\u30a7\u30c3\u30c8\u30a8\u30f3\u30b8\u30f3<\/strong><\/li>\n<li><strong>100\uff1a\u30c9\u30ea\u30eb\u5de5\u4e8b<\/strong><\/li>\n<li><strong>90\uff1a\u76f8\u5f53\u3046\u308b\u3055\u3044\u3044\u3084\u306a\u72ac<\/strong><\/li>\n<li><strong>80\uff1a\u96fb\u8eca<\/strong><\/li>\n<li><strong>70\uff1a\u8cd1\u3084\u304b\u306a\u4e8b\u52d9\u6240<\/strong><\/li>\n<li><strong>60\uff1a\u901a\u5e38\u306e\u4f1a\u8a71<\/strong><\/li>\n<li><strong>50\uff1a\u5272\u3068\u9759\u304b\u306a\u4e8b\u52d9\u6240<\/strong><\/li>\n<li><strong>40\uff1a\u56f3\u66f8\u9928<\/strong><\/li>\n<li><strong>20~30\uff1a\u30d2\u30bd\u30d2\u30bd\u3046\u308f\u3055\u8a71<\/strong><\/li>\n<li><strong>0\uff1a\u4eba\u304c\u805e\u304d\u53d6\u308c\u308b\u9650\u754c\u300c20\u30de\u30a4\u30af\u30ed\u30d1\u30b9\u30ab\u30eb\uff0820\u03bcPa\uff09\u300d<\/strong><\/li>\n<\/ul>\n<\/div>\n\n\n\n<p>\u3064\u307e\u308a\u4eba\u304c\u805e\u304d\u53d6\u308c\u308b\u9650\u754c\u300c0dB\u300d\u3092\u57fa\u6e96\u306b\u3053\u308c\u306f\u4f55\u500d\uff1f\u3068\u3044\u3046\u6570\u5024\u3067\u8868\u3057\u3066\u3044\u308b\u308f\u3051\u3067\u3059\u306d\u3002<\/p>\n\n\n\n<div class=\"blog-comment_gray\">\n<p><strong>\u76f8\u5bfe\u5358\u4f4d\u3068\u3057\u3066<strong>dB\u304c\u4f7f\u7528\u3055\u308c\u308b\u4f8b(<a href=\"http:\/\/ja.wikipedia.org\/wiki\/%E3%83%87%E3%82%B7%E3%83%99%E3%83%AB\" target=\"_blank\" rel=\"noopener\">Wikipedia<\/a>)<\/strong><\/strong><\/p>\n<table>\n<tbody>\n<tr>\n<th>\u500d\u7387\uff08\u6bd4\uff09<\/th>\n<th>\u96fb\u5727\u30fb\u96fb\u6d41\u30fb\u97f3\u5727<\/th>\n<th>\u96fb\u529b\u6bd4<\/th>\n<\/tr>\n<tr>\n<td>1\u500d<\/td>\n<td>0.00dB<\/td>\n<td>0.00dB<\/td>\n<\/tr>\n<tr>\n<td>2\u500d<\/td>\n<td>6.02dB<\/td>\n<td>3.01dB<\/td>\n<\/tr>\n<tr>\n<td>3\u500d<\/td>\n<td>9.54dB<\/td>\n<td>4.77dB<\/td>\n<\/tr>\n<tr>\n<td>4\u500d<\/td>\n<td>12.04dB<\/td>\n<td>6.02dB<\/td>\n<\/tr>\n<tr>\n<td>5\u500d<\/td>\n<td>13.98dB<\/td>\n<td>6.99dB<\/td>\n<\/tr>\n<tr>\n<td>10\u500d<\/td>\n<td>20.00dB<\/td>\n<td>10.00dB<\/td>\n<\/tr>\n<tr>\n<td>50\u500d<\/td>\n<td>33.98dB<\/td>\n<td>16.99dB<\/td>\n<\/tr>\n<tr>\n<td>100\u500d<\/td>\n<td>40.00dB<\/td>\n<td>20.00dB<\/td>\n<\/tr>\n<tr>\n<td>500\u500d<\/td>\n<td>53.98dB<\/td>\n<td>26.99dB<\/td>\n<\/tr>\n<tr>\n<td>1000\u500d<\/td>\n<td>60.00dB<\/td>\n<td>30.00dB<\/td>\n<\/tr>\n<tr>\n<td>5000\u500d<\/td>\n<td>73.98dB<\/td>\n<td>36.99dB<\/td>\n<\/tr>\n<tr>\n<td>10000\u500d<\/td>\n<td>80.00dB<\/td>\n<td>40.00dB<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n\n\n\n<p>\u306a\u305c\u96fb\u5727\u3068\u96fb\u529b\u3067\u6570\u5024\u304c\u3061\u304c\u3046\u306e\u304b\uff08\u500d\uff09\uff1f\u306f\u88dc\u8db3\u53c2\u7167<\/p>\n\n\n\n<div class=\"blog-comment_gray\">\n<p>\u3082\u304f\u3058<\/p>\n<ul>\n<li><a href=\"\/digital\/knowledge\/2014\/03\/21161#dl001\">\u306f\u3058\u3081\u306b<\/a><\/li>\n<li><a href=\"\/digital\/knowledge\/2014\/03\/21161#dl002\">\u300c\u97f3\u306e\u5f37\u3055\u300d\u3068\u300c\u97f3\u5727\u300d\u306e\u95a2\u4fc2<\/a><\/li>\n<li><a href=\"\/digital\/knowledge\/2014\/03\/21161#dl003\"> \u97f3\u5727\u3092\u305d\u306e\u307e\u307e\u97f3\u306e\u5f37\u3055\u306b\u5f53\u3066\u306f\u3081\u308b\u3068\u5927\u5909\u306a\u3053\u3068\u306b\u30fb\u30fb<\/a><\/li>\n<li><a href=\"\/digital\/knowledge\/2014\/03\/21161\/2#dl004\">\u97f3\u306e\u5f37\u3055\u3092\u300c\u97f3\u5727\u30ec\u30d9\u30eb\u300d\u3067\u8868\u3059<\/a><\/li>\n<li><a href=\"\/digital\/knowledge\/2014\/03\/21161\/2#dl005\">\u76f8\u5bfe\u5358\u4f4d\u3068\u7d76\u5bfe\u5358\u4f4d<\/a><\/li>\n<li><a href=\"\/digital\/knowledge\/2014\/03\/21161\/3#dl006\">VU\u30e1\u30fc\u30bf\u30fc\u3084\u30d4\u30fc\u30af\u30e1\u30fc\u30bf\u30fc\u306edB<\/a><\/li>\n<li><a href=\"\/digital\/knowledge\/2014\/03\/21161\/3#dl007\">\u30af\u30a4\u30ba\u300c3dB\u4e0a\u3052\u308b\u300d\u3068\u3044\u3046\u3053\u3068\u306f\u3069\u3046\u3044\u3046\u3053\u3068\u304b\uff1f<\/a><\/li>\n<li><a href=\"\/digital\/knowledge\/2014\/03\/21161\/3#dl008\">\u4eba\u304c\u611f\u3058\u308b\u97f3\u306e\u5927\u304d\u3055\u306f\u5468\u6ce2\u6570\u306b\u3088\u3063\u3066\u7570\u306a\u308b\uff5e\u30e9\u30a6\u30c9\u30cd\u30b9\uff5e<\/a><\/li>\n<\/ul>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><a name=\"dl006\"><\/a>VU\u30e1\u30fc\u30bf\u30fc\u3084\u30d4\u30fc\u30af\u30e1\u30fc\u30bf\u30fc\u306edB<\/h2>\n\n\n\n<p>\u30d7\u30e9\u30b0\u30a4\u30f3\u7b49\u3067\u8868\u793a\u3055\u308c\u308bVU\u30e1\u30fc\u30bf\u30fc\u3084\u30d4\u30fc\u30af\u30e1\u30fc\u30bf\u30fc\u3067\u8868\u793a\u3055\u308c\u3066\u3044\u308b\u300cdB\u300d\u306f\u672c\u6765<strong>\u96fb\u5727\u6bd4<\/strong>\u3092\u8868\u73fe\u3057\u3066\u304a\u308a\u3001\u97f3\u306e\u5f37\u3055\u3092\u8868\u73fe\u3059\u308b\u300cdb SPL\u300d\u3068\u306f\u7570\u306a\u308a\u307e\u3059\u3002\u6570\u5024\u306f\u30de\u30a4\u30ca\u30b9\u8868\u793a\u3067\u3059\u304c\u30010dB\u3092\u57fa\u6e96\u3068\u3057\u3001\u305d\u308c\u306b\u5bfe\u3057\u3066\u4f55\u5206\u306e\u4e00\u304b\uff1f\u3068\u3044\u3046\u8868\u793a\u5f62\u5f0f\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u30020dB\u3092\u8d85\u3048\u308b\u3068\u97f3\u304c\u6b6a\u3080\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>VU\u30e1\u30fc\u30bf\u30fc<br><img decoding=\"async\" class=\"alignnone size-full wp-image-21195\" src=\"https:\/\/info.shimamura.co.jp\/digital\/img\/upload\/shimastaff\/2014\/screenshot_2881.jpg\" alt=\"screenshot_288\" width=\"215\" height=\"211\"><\/p>\n\n\n\n<p>\u30d4\u30fc\u30af\u30e1\u30fc\u30bf\u30fc<br><img decoding=\"async\" class=\"alignnone size-full wp-image-21240\" src=\"https:\/\/info.shimamura.co.jp\/digital\/img\/upload\/shimastaff\/2014\/screenshot_289.jpg\" alt=\"screenshot_289\" width=\"307\" height=\"361\"><\/p>\n\n\n\n<p>VU\u30e1\u30fc\u30bf\u30fc\u306f\u5fdc\u7b54\u901f\u5ea6\u304c300msec\uff08\u30d4\u30fc\u30af\u30e1\u30fc\u30bf\u30fc\u306f10\uff5e20msec\uff09\u3067\u3042\u308a\u3001\u4eba\u9593\u306e\u611f\u899a\u306b\u4f3c\u3066\u3044\u308b\u8868\u793a\u3068\u3044\u308f\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><a name=\"dl007\"><\/a>\u30af\u30a4\u30ba\u300c3dB\u4e0a\u3052\u308b\u300d\u3068\u3044\u3046\u3053\u3068\u306f\u3069\u3046\u3044\u3046\u3053\u3068\u304b\uff1f<\/h2>\n\n\n\n<p>\u4ee5\u4e0a\u3092\u8e0f\u307e\u3048\u3066\u30af\u30a4\u30ba\u3067\u3059\u3002<\/p>\n\n\n\n<p><strong>\u203b\u3053\u3053\u3067\u306f\u300cdB\u540c\u5fd7\u3092\u5358\u7d14\u306b\u8db3\u3057\u305f\u308a\u5f15\u3044\u305f\u308a\u3057\u3066\u306f\u3044\u3051\u306a\u3044\u5834\u5408\u304c\u3042\u308b\u300d\u3068\u3044\u3046\u3053\u3068\u3060\u3051\u899a\u3048\u3066\u3044\u305f\u3060\u3051\u308c\u3070\u7d50\u69cb\u3067\u3059\u3002\u307e\u305f\u7d76\u5bfe\u30ec\u30d9\u30eb\u5024\u3068\u76f8\u5bfe\u30ec\u30d9\u30eb\u5024\u3092\u6271\u3046\u5834\u5408\u3067\u8a08\u7b97\u65b9\u6cd5\u304c\u5909\u308f\u308a\u307e\u3059\u3002<\/strong><\/p>\n\n\n\n<p><strong>1\uff0980dB\u3067\u5420\u3048\u308b\u72ac\u304c2\u5339\u3067\u5420\u3048\u305f\u3089\u4f55dB\u304b\uff1f\uff08<strong>\u73fe\u5b9f\u306b\u306f\u3042\u308a\u3048\u306a\u3044\u304c<\/strong>\u8a71\u3092\u7c21\u6f54\u306b\u3059\u308b\u305f\u3081\u4e8c\u5339\u306f\u5b8c\u74a7\u306b\u540c\u3058\u5420\u3048\u304b\u305f\u3092\u3059\u308b\uff09<\/strong><\/p>\n\n\n\n<div class=\"blog-comment_gray\">\u9593\u9055\u3044\uff1a80+80=160dB \u30fb\u30fb\u30fb\u30fb\u3082\u3057160dB\u3060\u3068\u30b8\u30a7\u30c3\u30c8\u30a8\u30f3\u30b8\u30f3\u306e100\u500d\u306e\u97f3\u306e\u5f37\u3055\u306b\u306a\u308b\u306e\u3067\u6b7b\u4ea1\u3057\u307e\u3059<br>\u6b63\u89e3\uff1a\u7d0483dB\u306b\u306a\u308a\u307e\u3059\u300210\u00d7log10(10<sup>8<\/sup>+10<sup>8<\/sup>)\u3000\u21d2\u3000<strong>1.4\u500d<\/strong>\u306b\u306a\u308b\u306e\u3067\u3059\u306d\u3002<\/div>\n\n\n\n<p><strong>2\uff09\u4f1a\u8a7160dB\u3068\u56f3\u66f8\u992840dB\u306e\u97f3\u306e\u5f37\u3055\u306e\u5dee\u306f\u3069\u308c\u304f\u3089\u3044\uff1f<\/strong>\uff08\u500d\u7387\uff09<\/p>\n\n\n\n<div class=\"blog-comment_gray\">\u6b63\u89e3\uff1a20dB\u306e\u5dee\u3060\u304b\u3089<strong>10\u500d<\/strong>\u3001\u56f3\u66f8\u9928\u3067\u306f\u9759\u304b\u306b\u3057\u307e\u3057\u3087\u3046\u3002<\/div>\n\n\n\n<p><strong>3\uff09\u300c3dB\u4e0a\u3052\u3066\u304f\u3060\u3055\u3044\u300d\u3068PA\u30b9\u30bf\u30c3\u30d5\u306b\u304a\u9858\u3044\u3059\u308b\u3068\u3069\u308c\u3060\u3051\u97f3\u5727\u304c\u4e0a\u304c\u308b\u306e\u304b\uff1f<\/strong><\/p>\n\n\n\n<div class=\"blog-comment_gray\">\u7b54\u3048\uff1a\u7d041.41\u500d<\/div>\n\n\n\n<p>DTMF\u30c8\u30fc\u30f3\uff08\u30d7\u30c3\u30b7\u30e5\u30db\u30f3\u306a\u3069\u3067\u4f7f\u308f\u308c\u308b\u30d4\u30dd\u30d1\u30dd\u97f3\uff09\u3067\u8a66\u3057\u3066\u307f\u307e\u3059\u3002<br><iframe loading=\"lazy\" src=\"https:\/\/w.soundcloud.com\/player\/?url=https%3A\/\/api.soundcloud.com\/tracks\/138997982&amp;color=%23ff5500&amp;auto_play=false&amp;hide_related=false&amp;show_comments=true&amp;show_user=true&amp;show_reposts=false&amp;show_teaser=true&amp;visual=true\" width=\"100%\" height=\"300\" frameborder=\"no\" scrolling=\"no\"><\/iframe><br>\u306a\u304a\u5e38\u7528\u5bfe\u6570\u306e\u8a08\u7b97\u306f\u95a2\u6570\u96fb\u5353\u3067\u53ef\u80fd\u3067\u3059\uff08log10\uff09\u3002\u3053\u308c\u306fiOS\u306e\u96fb\u5353\uff08iPhone\u3067\u306f\u672c\u4f53\u3092\u6a2a\u5411\u304d\u306b\u3059\u308b\u3068\u3053\u308c\u306b\u5207\u308a\u66ff\u308f\u308a\u307e\u3059\uff09<br><img decoding=\"async\" class=\"alignnone wp-image-21460\" src=\"https:\/\/info.shimamura.co.jp\/digital\/img\/upload\/shimastaff\/2014\/IMG_8271-500x281.png\" alt=\"IMG_8271\" width=\"420\" height=\"236\" srcset=\"https:\/\/info.shimamura.co.jp\/digital\/img\/upload\/shimastaff\/2014\/IMG_8271-500x281.png 500w, https:\/\/info.shimamura.co.jp\/digital\/img\/upload\/shimastaff\/2014\/IMG_8271-1024x576.png 1024w, https:\/\/info.shimamura.co.jp\/digital\/img\/upload\/shimastaff\/2014\/IMG_8271.png 1136w\" sizes=\"(max-width: 420px) 100vw, 420px\" \/><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><a name=\"dl008\"><\/a>\u3010\u53c2\u8003\u3011\u4eba\u304c\u611f\u3058\u308b\u97f3\u306e\u5927\u304d\u3055\u306f\u5468\u6ce2\u6570\u306b\u3088\u3063\u3066\u7570\u306a\u308b\uff5e\u30e9\u30a6\u30c9\u30cd\u30b9\uff5e<\/h2>\n\n\n\n<p>\u308f\u305f\u3057\u305f\u3061\u306f\u540c\u3058\u97f3\u5727\u30ec\u30d9\u30eb\u306e\u97f3\u3067\u3042\u3063\u3066\u3082\u3001\u97f3\u306e\u5468\u6ce2\u6570\u306e\u9055\u3044\u306b\u3088\u3063\u3066\u7570\u306a\u308b\u5927\u304d\u3055\u306e\u97f3\u3068\u3057\u3066\u8a8d\u8b58\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305f\u3068\u3048\u3070\u30d4\u30a2\u30ce\u3092\u5f3e\u3044\u305f\u5834\u5408\u3001\u308f\u305f\u3057\u305f\u3061\u306f\u300c\u5927\u304d\u3055\u300d\u300c\u9ad8\u3055\u300d\u300c\u97f3\u8272\u300d\u3068\u3044\u3046\u300c\u97f3\u306e\u4e09\u8981\u7d20\u300d\u3092\u30c8\u30fc\u30bf\u30eb\u306b\u8074\u304f\uff08\u611f\u3058\u308b\uff09\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u306e\u611f\u3058\u308b\u300c\u91cf\u300d\u306f\u8074\u899a\u304c\u611f\u3058\u308b\u300c\u97f3\u306e\u5f37\u3055\u300d\u3067\u3042\u3063\u3066<strong>\u611f\u899a\u91cf\uff08\u5fc3\u7406\u91cf\uff09<\/strong>\u3068\u547c\u3070\u308c\u308b\u3082\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u611f\u899a\u91cf\u3068\u3044\u3046\u306e\u306f\u300c\u5473\u899a\u300d\u300c\u8996\u899a\u300d\u300c\u55c5\u899a\u300d\u3068\u3044\u3063\u305f\u4e3b\u89b3\u7684\u306b\u611f\u3058\u308b\u300c\u5f37\u3055\u300d\u306e\u91cf\u306e\u3053\u3068\u3067\u3001\u305f\u3068\u3048\u3070\u6d77\u306e\u6c34\u306f\u3060\u308c\u3067\u3082\u300c\u3057\u3087\u3063\u3071\u304f\u300d\u611f\u3058\u308b\u308f\u3051\u3067\u3001\u5869\u306e\u6fc3\u5ea6\u304c\u4e0a\u304c\u308b\u307b\u3069\uff08\u500b\u4eba\u5dee\u3084\u305d\u306e\u6642\u306e\u4f53\u8abf\u3001\u6c17\u5206\u306e\u5dee\u306f\u3042\u308b\u306b\u305b\u3088\uff09\u3055\u3089\u306b\u3057\u3087\u3063\u3071\u304f\u611f\u3058\u308b\u3068\u3044\u3046\u95a2\u4fc2\u304c\u6210\u308a\u7acb\u3064\u308f\u3051\u3067\u3059\u306d\u3002\u3053\u306e\u611f\u899a\u91cf\u3067\u3042\u308b\u300c\u97f3\u306e\u5927\u304d\u3055\u300d\u306f\u30e9\u30a6\u30c9\u30cd\u30b9\uff08loudness\uff09\u3068\u547c\u3070\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u97f3\u306e\u5927\u304d\u3055\u306e\u5358\u4f4d\u306fsone\uff08\u30bd\u30fc\u30f3\uff09\u97f3\u5727\u30ec\u30d9\u30eb\u304c\u300c40dB\u306e1,000Hz\u300d\u306e\u30b5\u30a4\u30f3\u6ce2\u306e\u97f3\u306e\u5927\u304d\u3055\u30921sone\u3068\u3057\u3066\u3001\u4eee\u306b\u5927\u304d\u3055\u304c\u500d\u306b\u611f\u3058\u308b\u97f3\u306f2sone\u3002<\/p>\n\n\n\n<p>\u305f\u3060\u3057\u5468\u6ce2\u6570\u306b\u3088\u3063\u3066\u611f\u3058\u308b\u97f3\u306e\u5927\u304d\u3055\u306b\u306f\u5909\u5316\u304c\u3042\u308a\u300c1000Hz\u300040dB\u300d\u306e\u30b5\u30a4\u30f3\u6ce2\u3068\u540c\u3058\u5927\u304d\u3055\u306b\u805e\u3053\u3048\u308b\u3059\u3079\u3066\u306e\u3001\u5468\u6ce2\u6570\u3068\u97f3\u5727\u3092\u3042\u3089\u308f\u3057\u3001\u7279\u6027\u3092\u30b0\u30e9\u30d5\u306b\u3057\u305f\u306e\u304c\u300c\u7b49\u30e9\u30a6\u30c9\u30cd\u30b9\u30ec\u30d9\u30eb\u66f2\u7dda\u300d\u3067\u3059\uff08\u4e0b\u56f3\uff09\u3002<\/p>\n\n\n\n<p><img decoding=\"async\" class=\"alignnone wp-image-21235\" src=\"https:\/\/info.shimamura.co.jp\/digital\/img\/upload\/shimastaff\/2014\/668px-Lindos1.svg_.png\" alt=\"668px-Lindos1.svg\" width=\"401\" height=\"360\" srcset=\"https:\/\/info.shimamura.co.jp\/digital\/img\/upload\/shimastaff\/2014\/668px-Lindos1.svg_.png 668w, https:\/\/info.shimamura.co.jp\/digital\/img\/upload\/shimastaff\/2014\/668px-Lindos1.svg_-500x449.png 500w\" sizes=\"(max-width: 401px) 100vw, 401px\" \/><a href=\"http:\/\/ja.wikipedia.org\/wiki\/%E9%9F%B3%E3%81%AE%E5%A4%A7%E3%81%8D%E3%81%95\" target=\"_blank\" rel=\"noopener\">wikipedia<\/a><\/p>\n\n\n\n<p>\u300c1000Hz\u300040dB\u300d\u3068\u540c\u3058\u3088\u3046\u306b\u805e\u3053\u3048\u308b\u5024\u3092\u8868\u3059\u7dda\uff08\u9752\u8272\uff09\u306f40phon\uff08\u30db\u30f3\uff09\u3002\u6614\u306f\u9a12\u97f3\u3092\u8868\u3059\u5358\u4f4d\u306b\u4f7f\u308f\u308c\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p><strong>1KHz\u304b\u30895KHz<\/strong>\u3042\u305f\u308a\u306f\u79c1\u9054\u306e\u751f\u6d3b\u306e\u4e2d\u3067\u300c\u8eab\u8fd1\u306a\u300d\u97f3\u306a\u306e\u304b\u3001\u611f\u5ea6\u304c\u9ad8\u3044(\u97f3\u5727\u304c\u4f4e\u304f\u3066\u3082\u805e\u3053\u3048\u308b)\u3068\u3044\u3046\u306e\u304c\u308f\u304b\u308a\u307e\u3059\uff08\u500b\u4eba\u5dee\u306f\u3042\u308a\u307e\u3059\uff09<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">LKFS\/LUFS<\/h3>\n\n\n\n<p>\u306a\u304a\u30e9\u30a6\u30c9\u30cd\u30b9\u5024\u3092\u6e2c\u5b9a\u3059\u308b\u30e9\u30a6\u30c9\u30cd\u30b9\u30e1\u30fc\u30bf\u30fc\uff08\u5143\u3005\u653e\u9001\u696d\u754c\u5411\u3051\u306b\u958b\u767a\u3055\u308c\u305f\u3082\u306e\uff09\u3067\u6271\u3046\u5358\u4f4d\u306b\u306f\u3001LKFS\/LUFS\u3068\u3044\u3046\u3082\u306e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>LKFS\uff1aLoudness K-Weighted Full Scale<\/li>\n\n\n\n<li>LUFS\uff1aLoudness Unit Full Scale<\/li>\n<\/ul>\n\n\n\n<p>\u30c6\u30ec\u30d3\u306a\u3069\u3067\u306f\u3001\u30c1\u30e3\u30f3\u30cd\u30eb\u3092\u5909\u3048\u305f\u3068\u304d\u306b\u6975\u7aef\u306a\u97f3\u91cf\u5dee\u304c\u751f\u3058\u306a\u3044\u3088\u3046\u3001EBU\uff08\u6b27\u5dde\u653e\u9001\u9023\u5408\uff09\u306e\u30e9\u30a6\u30c9\u30cd\u30b9\u63a8\u5968\u898f\u683c\u3067\u3042\u308b R-128 \u3067\u306f\u30e9\u30a6\u30c9\u30cd\u30b9\u3001\u30c0\u30a4\u30ca\u30df\u30af\u30b9\u3001\u30d4\u30fc\u30af\u5024\u306e\u6e2c\u5b9a\u65b9\u6cd5\u3084\u57fa\u6e96\u5024\u304c\u5b9a\u3081\u3089\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>LUFS\uff08\u30e9\u30d5\u30b9\uff09\u306f\u3001\u97f3\u306e\u5927\u304d\u3055\uff08\u30e9\u30a6\u30c9\u30cd\u30b9\uff09\u3092\u3001\u4eba\u9593\u306e\u201c\u805e\u3053\u3048\u65b9\u201d\u306b\u5408\u308f\u305b\u3066\u6570\u5024\u5316\u3057\u305f\u5358\u4f4d\u300d\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u6614\u304b\u3089\u4f7f\u308f\u308c\u3066\u3044\u308b dB\uff08\u30c7\u30b7\u30d9\u30eb\uff09 \u306f\u3001\u300c\u77ac\u9593\u7684\u306a\u97f3\u91cf\u300d\u3084\u300c\u6a5f\u68b0\u7684\u306a\u30ec\u30d9\u30eb\u300d\u304c\u4e2d\u5fc3\u3067\u4eba\u304c\u300c\u5927\u304d\u3044\u30fb\u5c0f\u3055\u3044\u300d\u3068\u611f\u3058\u308b\u5370\u8c61\u3068\u306f\u30ba\u30ec\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u3053\u3067\u767b\u5834\u3057\u305f\u306e\u304c LUFS \u3067\u3059\u3002<\/p>\n\n\n\n<p>LUFS \u3067\u306f\u3001\u4eba\u9593\u306e\u8033\u304c\u654f\u611f\u306a\u5e2f\u57df\uff081kHz\u524d\u5f8c\u306a\u3069\uff09\u3092\u91cd\u8996\u3057\u3066\u8a08\u7b97\u3059\u308b\u9006\u306b\u3001\u3042\u307e\u308a\u805e\u3053\u3048\u306b\u304f\u3044\u4f4e\u57df\u30fb\u8d85\u9ad8\u57df\u306f\u5c11\u3057\u8efd\u304f\u6271\u3046\u3068\u3044\u3063\u305f\u88dc\u6b63\u3092\u304b\u3051\u3001\u300c\u4f53\u611f\u7684\u306a\u3046\u308b\u3055\u3055\u300d\u306b\u8fd1\u3065\u3051\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>YouTube\u30fbSpotify\u30fbApple Music \u306a\u3069\u591a\u304f\u306e\u914d\u4fe1\u30b5\u30fc\u30d3\u30b9\u306f\u3001\u518d\u751f\u3059\u308b\u66f2\u3054\u3068\u306e\u97f3\u91cf\u5dee\u3092\u6e1b\u3089\u3059\u305f\u3081\u306bLUFS\u3092\u57fa\u6e96\u306b\u3001\u81ea\u52d5\u3067\u97f3\u91cf\u3092\u305d\u308d\u3048\u308b<br>\u4ed5\u7d44\u307f\u3092\u4f7f\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305f\u3068\u3048\u3070\uff1a<\/p>\n\n\n\n<p>A\u66f2\uff1a\u3068\u3066\u3082\u5927\u304d\u304f\u30de\u30b9\u30bf\u30ea\u30f3\u30b0\uff08-6 LUFS\u306a\u3069\uff09<br>B\u66f2\uff1a\u5c11\u3057\u4f59\u88d5\u3092\u6b8b\u3057\u305f\u30de\u30b9\u30bf\u30ea\u30f3\u30b0\uff08-14 LUFS\u304f\u3089\u3044\uff09<\/p>\n\n\n\n<p><br>\u3053\u306e2\u66f2\u3092\u540c\u3058\u30d7\u30ec\u30a4\u30ea\u30b9\u30c8\u3067\u518d\u751f\u3059\u308b\u3068\u304d\u3001\u30b5\u30fc\u30d3\u30b9\u5074\u304cA\u66f2\u306f\u81ea\u52d5\u7684\u306b\u97f3\u91cf\u3092\u4e0b\u3052\u308bB\u66f2\u306f\u305d\u306e\u307e\u307e\u3001\u3082\u3057\u304f\u306f\u5c11\u3057\u3060\u3051\u4e0a\u3052\u308b\u3068\u3044\u3046\u8abf\u6574\u3092\u884c\u3044\u3001\u300c\u6700\u7d42\u7684\u306b\u540c\u3058\u304f\u3089\u3044\u306e\u30e9\u30a6\u30c9\u30cd\u30b9\u300d\u306b\u305d\u308d\u3048\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u300c\u3068\u306b\u304b\u304f\u5927\u304d\u304f\u30de\u30b9\u30bf\u30ea\u30f3\u30b0\u3059\u308c\u3070\u6709\u5229\u300d\u3068\u3044\u3046\u6642\u4ee3\u3067\u306f\u306a\u304f\u306a\u308a\u3001<\/p>\n\n\n\n<p>\u300c\u9069\u5207\u306a LUFS \u306b\u6574\u3048\u305f\u65b9\u304c\u3001\u7d50\u679c\u7684\u306b\u81ea\u7136\u3067\u8074\u304d\u3084\u3059\u3044\u300d<\/p>\n\n\n\n<p>\u3068\u3044\u3046\u8003\u3048\u65b9\u304c\u4e3b\u6d41\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u2605<\/p>\n\n\n\n<p>\u3068\u3044\u3046\u308f\u3051\u3067\u304a\u75b2\u308c\u69d8\u3067\u3057\u305f\uff5e<\/p>\n\n\n\n<div class=\"blog-comment_gray\">\n<p>\u3010\u88dc\u8db3\u3011\uff08\u3042\u3048\u3066\u5358\u4f4d\u8a18\u53f7\u3067\u8868\u3057\u3066\u304a\u308a\u307e\u3059\uff09\u5143\u3005B\uff08\u30d9\u30eb\uff09\u306f\u96fb\u529b\u306e\u4f1d\u9001\u6e1b\u8870\u306e\u8868\u73fe\u3067\u63a1\u7528\u3055\u308c\u3066\u3044\u307e\u3057\u305f\u3002\u30c7\u30b7\u30d9\u30eb\u3092\u96fb\u529b\u6bd4\u3068\u3057\u3066\u8003\u3048\u308b\u3068<strong>10\u00d7log(W1\/W2)<\/strong>\u3067\u3059\u304c\u3001\u96fb\u529b\u3068\u96fb\u5727\u3001\u96fb\u6d41\u3001\u62b5\u6297\u306b\u306f<\/p>\n<p>\u96fb\u529b(W)\uff1d\u96fb\u5727(V)\u00d7\u96fb\u6d41(A)\u3001\u96fb\u5727(V)\uff1d\u96fb\u6d41(A)\u00d7\u62b5\u6297(\u03a9)\u3001W=V<sup>2<\/sup>\/\u03a9 &nbsp;\u3068\u3044\u3046\u95a2\u4fc2\u304c\u3042\u308a\u307e\u3059\u3002\u3059\u308b\u3068<\/p>\n<p><strong>10\u00d7log(V1<sup>2<\/sup>\/V2<sup>2<\/sup>)\uff1d10\u00d7log(V1\/V2)<sup>2<\/sup>=20\u00d7log(V1\/V2)<\/strong><\/p>\n<p>\u3068\u306a\u308a\u3001\u96fb\u5727\u306e\u30c7\u30b7\u30d9\u30eb\u306f\u96fb\u5727\u6bd4\u306e\u5bfe\u6570\u306b\u300c20\u300d\u3092\u304b\u3051\u307e\u3059\u3002\u97f3\u5727\u3082\u540c\u69d8\u3067\u3059\u30fb\u30fb\u30fb\u306a\u3093\u3060\u304b\u308f\u304b\u3063\u305f\u3088\u3046\u306a\u305d\u3046\u3067\u306a\u3044\u3088\u3046\u306a\u30fb\u30fb\u30fb\u30fb<\/p>\n<\/div>\n\n\n\n<p>&nbsp;<\/p>\n\n\n\n<div 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