{"id":2522,"date":"2025-06-20T13:09:09","date_gmt":"2025-06-20T04:09:09","guid":{"rendered":"https:\/\/enclosuretokyo.com\/?p=2522"},"modified":"2025-06-20T13:09:09","modified_gmt":"2025-06-20T04:09:09","slug":"20db%e4%bb%a5%e4%b8%8b%e3%81%ae%e9%9d%99%e3%81%91%e3%81%95%e3%81%af%e3%81%a9%e3%81%86%e4%bd%9c%e3%82%8b%ef%bc%9f-%e2%94%80-%e8%81%b4%e5%8a%9b%e6%a4%9c%e6%9f%bb%e5%ae%a4%e3%81%ae%e9%81%ae%e9%9f%b3","status":"publish","type":"post","link":"https:\/\/enclosuretokyo.com\/?p=2522","title":{"rendered":"20dB\u4ee5\u4e0b\u306e\u9759\u3051\u3055\u306f\u3069\u3046\u4f5c\u308b\uff1f \u2500 \u8074\u529b\u691c\u67fb\u5ba4\u306e\u906e\u97f3\u76ee\u6a19\u3068\u9054\u6210\u624b\u6cd5 \u2500"},"content":{"rendered":"<p><img decoding=\"async\" class=\"alignnone size-large wp-image-2514 aligncenter\" src=\"https:\/\/enclosuretokyo.com\/wp-content\/uploads\/2025\/05\/AdobeStock_1353879705-1024x683.jpeg\" alt=\"\" width=\"1024\" height=\"683\" srcset=\"https:\/\/enclosuretokyo.com\/wp-content\/uploads\/2025\/05\/AdobeStock_1353879705-1024x683.jpeg 1024w, https:\/\/enclosuretokyo.com\/wp-content\/uploads\/2025\/05\/AdobeStock_1353879705-300x200.jpeg 300w, https:\/\/enclosuretokyo.com\/wp-content\/uploads\/2025\/05\/AdobeStock_1353879705-768x512.jpeg 768w, https:\/\/enclosuretokyo.com\/wp-content\/uploads\/2025\/05\/AdobeStock_1353879705-1536x1024.jpeg 1536w, https:\/\/enclosuretokyo.com\/wp-content\/uploads\/2025\/05\/AdobeStock_1353879705-2048x1365.jpeg 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/p>\n<h2><b>\u306f\u3058\u3081\u306b\uff5c\u300c20dB\u4ee5\u4e0b\u300d\u306f\u3069\u308c\u307b\u3069\u9759\u304b\u306a\u306e\u304b\uff1f<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">\u8074\u529b\u691c\u67fb\u3067\u306f\u3001\u88ab\u9a13\u8005\u304c\u6700\u5c0f\u9650\u306e\u97f3\u3092\u3069\u308c\u3060\u3051\u6b63\u78ba\u306b\u805e\u304d\u53d6\u308c\u308b\u304b\u3092\u6e2c\u5b9a\u3059\u308b\u305f\u3081\u3001<\/span><b>\u5468\u56f2\u9a12\u97f3\u304c\u691c\u67fb\u7d50\u679c\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u306a\u3044\u9759\u3051\u3055<\/b><span style=\"font-weight: 400;\">\u304c\u6c42\u3081\u3089\u308c\u307e\u3059\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u306a\u304b\u3067\u3082\u300c<\/span><b>20dB\u4ee5\u4e0b<\/b><span style=\"font-weight: 400;\">\u300d\u3068\u3044\u3046\u9759\u3051\u3055\u306f\u3001\u65e5\u5e38\u74b0\u5883\u3068\u306f\u304b\u3051\u96e2\u308c\u305f\u975e\u5e38\u306b\u9ad8\u5ea6\u306a\u906e\u97f3\u72b6\u614b\u3067\u3059\u3002\u3053\u308c\u306f\u305f\u3068\u3048\u3070\uff1a<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>\u6728\u306e\u8449\u306e\u3053\u3059\u308c\u308b\u97f3\uff08\u7d0420dB\uff09<\/b><b>\n<p><\/b><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>\u56f3\u66f8\u9928\u306e\u9759\u3051\u3055\uff08\u7d0430dB\uff09\u3088\u308a\u3055\u3089\u306b\u9759\u304b<\/b><b>\n<p><\/b><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">\u3068\u3055\u308c\u3066\u304a\u308a\u3001<\/span><b>\u901a\u5e38\u306e\u5efa\u7bc9\u69cb\u9020\u3067\u306f\u9054\u6210\u4e0d\u53ef\u80fd<\/b><span style=\"font-weight: 400;\">\u3067\u3059\u3002<\/span><\/p>\n<h2><b>1. \u306a\u305c\u300c20dB\u4ee5\u4e0b\u300d\u304c\u5fc5\u8981\u306a\u306e\u304b\uff1f\uff5c\u898f\u683c\u3068\u81e8\u5e8a\u8981\u4ef6<\/b><\/h2>\n<h3><b>\u25cf ISO 8253-1 \u3084 JIS T 1201 \u306b\u304a\u3051\u308b\u80cc\u666f\u9a12\u97f3\u5236\u9650<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u8074\u529b\u691c\u67fb\u5ba4\u3067\u306f\u3001\u300c<\/span><b>MPANL\uff08\u6700\u5927\u8a31\u5bb9\u5468\u56f2\u9a12\u97f3\u30ec\u30d9\u30eb\uff09<\/b><span style=\"font-weight: 400;\">\u300d\u306b\u3088\u308a\u5468\u6ce2\u6570\u3054\u3068\u306e\u9a12\u97f3\u4e0a\u9650\u304c\u5b9a\u3081\u3089\u308c\u3066\u3044\u307e\u3059\u3002<\/span><span style=\"font-weight: 400;\">\n<p><\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">1,000Hz\u30842,000Hz\u3067\u306f<\/span><b>30dB SPL<\/b><span style=\"font-weight: 400;\">\u4ee5\u4e0b\u3001\u3055\u3089\u306b\u53b3\u5bc6\u306a\u6e2c\u5b9a\u3067\u306f<\/span><b>20\u301c25dB\u4ee5\u4e0b\u306e\u6697\u9a12\u97f3\u74b0\u5883<\/b><span style=\"font-weight: 400;\">\u304c\u63a8\u5968\u3055\u308c\u307e\u3059\u3002<\/span><span style=\"font-weight: 400;\">\n<p><\/span><\/li>\n<\/ul>\n<h3><b>\u25cf \u533b\u7642\u73fe\u5834\u3067\u306e\u30cb\u30fc\u30ba<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u5c0f\u5150\u30fb\u9ad8\u611f\u5ea6\u691c\u67fb\u30fb\u88dc\u8074\u5668\u30d5\u30a3\u30c3\u30c6\u30a3\u30f3\u30b0\u306a\u3069\u3001<\/span><b>\u5fae\u7d30\u306a\u8074\u529b\u5dee\u3092\u6e2c\u5b9a\u3059\u308b\u7528\u9014<\/b><span style=\"font-weight: 400;\">\u3067\u306f\u300120dB\u4ee5\u4e0b\u306e\u9759\u5bc2\u304c\u6c42\u3081\u3089\u308c\u308b\u30b1\u30fc\u30b9\u304c\u5897\u3048\u3066\u3044\u307e\u3059\u3002<\/span><span style=\"font-weight: 400;\">\n<p><\/span><\/li>\n<\/ul>\n<h2><b>2. \u906e\u97f3\u8a2d\u8a08\u3067\u300c20dB\u4ee5\u4e0b\u300d\u3092\u9054\u6210\u3059\u308b\u305f\u3081\u306e\u30a2\u30d7\u30ed\u30fc\u30c1<\/b><\/h2>\n<h3><b>\u2460 \u906e\u97f3\u69cb\u9020\u306e\u6700\u9069\u5316<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u4e8c\u91cd\u58c1\u69cb\u9020\uff0b\u6d6e\u5e8a\uff0b\u7a7a\u6c17\u5c64\u3092\u7d44\u307f\u5408\u308f\u305b\u305f<\/span><b>\u591a\u5c64\u906e\u97f3\u8a2d\u8a08<\/b><b>\n<p><\/b><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u958b\u53e3\u90e8\uff08\u30c9\u30a2\u30fb\u63db\u6c17\u30fb\u914d\u7dda\u53e3\uff09\u306f<\/span><b>\u97f3\u97ff\u30c1\u30e3\u30f3\u30d0\u30fc\u65b9\u5f0f<\/b><span style=\"font-weight: 400;\">\u3084<\/span><b>\u30b5\u30a4\u30ec\u30f3\u30b5\u30fc\u4ed8\u304d<\/b><span style=\"font-weight: 400;\">\u306b<\/span><span style=\"font-weight: 400;\">\n<p><\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">D-65\u7b49\u7d1a\u4ee5\u4e0a\u3092\u76ee\u6307\u3059\u65bd\u5de5\u4ed5\u69d8\u304c\u5fc5\u8981<\/span><span style=\"font-weight: 400;\">\n<p><\/span><\/li>\n<\/ul>\n<h3><b>\u2461 \u5ba4\u5185\u306e\u5438\u97f3\u51e6\u7406<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u6b8b\u97ff\u3084\u53cd\u5c04\u97f3\u306b\u3088\u308b\u6e2c\u5b9a\u8aa4\u5dee\u3092\u9632\u3050\u306b\u306f<\/span><b>\u5e83\u5e2f\u57df\u5438\u97f3\u51e6\u7406<\/b><span style=\"font-weight: 400;\">\u304c\u5fc5\u9808<\/span><span style=\"font-weight: 400;\">\n<p><\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>\u30bd\u30ce\u30fc\u30e9\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u682a\u5f0f\u4f1a\u793e\u88fd\u306eBF\u30b7\u30ea\u30fc\u30ba<\/b><span style=\"font-weight: 400;\">\uff08BFW\u30fbBFB\u30fbBFP\uff09\u306f\u30010.99\u4ee5\u4e0a\u306e\u5438\u97f3\u7387\u3092\u6301\u3061\u300120dB\u4ee5\u4e0b\u306e\u74b0\u5883\u3065\u304f\u308a\u306b\u52b9\u679c\u7684<\/span><span style=\"font-weight: 400;\">\n<p><\/span><\/li>\n<\/ul>\n<h3><b>\u2462 \u5916\u90e8\u9a12\u97f3\u6e90\u306e\u6392\u9664<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u691c\u67fb\u5ba4\u306e\u8a2d\u7f6e\u4f4d\u7f6e\u3092<\/span><b>\u6a5f\u68b0\u5ba4\u30fb\u9053\u8def\u30fb\u7a7a\u8abf\u6a5f\u304b\u3089\u9694\u96e2<\/b><b>\n<p><\/b><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u8a2d\u7f6e\u74b0\u5883\u306b\u5fdc\u3058\u3066\u3001<\/span><b>\u69cb\u9020\u4f53\u3084\u57fa\u790e\u306e\u9632\u632f\u5bfe\u7b56<\/b><span style=\"font-weight: 400;\">\u3082\u5fc5\u8981\u306b\u306a\u308b\u30b1\u30fc\u30b9\u3042\u308a<\/span><span style=\"font-weight: 400;\">\n<p><\/span><\/li>\n<\/ul>\n<h2><b>3. \u9054\u6210\u3092\u88cf\u4ed8\u3051\u308b\u300c\u6697\u9a12\u97f3\u6e2c\u5b9a\u300d\u3068K2\u8a55\u4fa1<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">20dB\u4ee5\u4e0b\u3092\u76ee\u6a19\u3068\u3059\u308b\u5834\u5408\u3001<\/span><b>\u5358\u306a\u308b\u8a2d\u8a08\u5024\u3067\u306f\u306a\u304f\u5b9f\u6e2c\u30c7\u30fc\u30bf\u306b\u3088\u308b\u88cf\u4ed8\u3051<\/b><span style=\"font-weight: 400;\">\u304c\u91cd\u8981\u3067\u3059\u3002<\/span><\/p>\n<h3><b>\u25cf \u6697\u9a12\u97f3\u6e2c\u5b9a\uff08NC\u6e2c\u5b9a\u30fbA\u7279\u6027\u6e2c\u5b9a\uff09<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">1\/3\u30aa\u30af\u30bf\u30fc\u30d6\u30d0\u30f3\u30c9\u3067\u306e\u5468\u6ce2\u6570\u5206\u6790\u3092\u5b9f\u65bd<\/span><span style=\"font-weight: 400;\">\n<p><\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A\u7279\u6027\u63db\u7b97\u3067<\/span><b>18\u301c20dB\u4ee5\u4e0b<\/b><span style=\"font-weight: 400;\">\u304c\u78ba\u8a8d\u3067\u304d\u308b\u74b0\u5883\u304c\u7406\u60f3<\/span><span style=\"font-weight: 400;\">\n<p><\/span><\/li>\n<\/ul>\n<h3><b>\u25cf K2\u88dc\u6b63\u5024\u306b\u3088\u308b\u53cd\u5c04\u97f3\u8a55\u4fa1<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u97f3\u6e90\u304b\u3089\u306e\u97f3\u5727\u30ec\u30d9\u30eb\u6e1b\u8870\u3092\u6e2c\u5b9a\u3057\u3001<\/span><b>K2 \u2266 2.0 dB\u4ee5\u4e0b<\/b><span style=\"font-weight: 400;\">\u3067\u3042\u308c\u3070\u3001<\/span><b>\u300c\u534a\u81ea\u7531\u97f3\u5834\u300d\u3068\u3057\u3066\u9069\u6b63<\/b><span style=\"font-weight: 400;\">\u3068\u8a55\u4fa1\u3055\u308c\u307e\u3059<\/span><span style=\"font-weight: 400;\">\n<p><\/span><\/li>\n<\/ul>\n<h2><b>4. \u30a4\u30f3\u30af\u30ed\u30b8\u30e5\u30a2\u306e\u6280\u8853\u5bfe\u5fdc\u3068\u5c0e\u5165\u4e8b\u4f8b<\/b><\/h2>\n<h3><b>\u25ce \u5b9f\u73fe\u53ef\u80fd\u306a\u906e\u97f3\u4ed5\u69d8\u4f8b<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u58c1\u30fb\u5929\u4e95\uff1a\u4e8c\u91cd\u77f3\u818f\u30dc\u30fc\u30c9\uff0b\u5438\u97f3\u5c64\uff0b\u906e\u97f3\u30b7\u30fc\u30c8\u69cb\u6210<\/span><span style=\"font-weight: 400;\">\n<p><\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u5e8a\uff1a\u6d6e\u5e8a\uff0b\u5236\u632f\u30b4\u30e0\u5c64\uff0b\u5438\u97f3\u30d1\u30cd\u30eb<\/span><span style=\"font-weight: 400;\">\n<p><\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u958b\u53e3\u90e8\uff1a\u7279\u88fd\u906e\u97f3\u30c9\u30a2\uff08STC\u226745\uff09\uff0b\u63db\u6c17\u6d88\u97f3\u30dc\u30c3\u30af\u30b9<\/span><span style=\"font-weight: 400;\">\n<p><\/span><\/li>\n<\/ul>\n<h3><b>\u25ce \u5bfe\u5fdc\u5b9f\u7e3e<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u56fd\u7acb\u5927\u5b66\u533b\u5b66\u90e8\u9644\u5c5e\u75c5\u9662\u5411\u3051\u691c\u67fb\u5ba4\uff0819.8dB\u9054\u6210\uff09<\/span><span style=\"font-weight: 400;\">\n<p><\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u5e7c\u5150\u7528\u8074\u529b\u691c\u67fb\u5ba4\uff08\u6d6e\u69cb\u9020\uff0bBFW\u63a1\u7528\uff09<\/span><span style=\"font-weight: 400;\">\n<p><\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u9a12\u97f3\u74b0\u5883\u4e0b\u3067\u306e\u30dd\u30fc\u30bf\u30d6\u30eb\u578b\u30e6\u30cb\u30c3\u30c8\u5c0e\u5165\u4f8b\u3000\u306a\u3069<\/span><span style=\"font-weight: 400;\">\n<p><\/span><\/li>\n<\/ul>\n<h2><b>\u304a\u308f\u308a\u306b\uff5c\u300c20dB\u306e\u58c1\u300d\u3092\u8d8a\u3048\u308b\u8a2d\u8a08\u529b\u304c\u3001\u691c\u67fb\u306e\u4fe1\u983c\u6027\u3092\u5909\u3048\u308b<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">20dB\u4ee5\u4e0b\u306e\u9759\u5bc2\u306f\u3001\u7c21\u5358\u306b\u5b9f\u73fe\u3067\u304d\u308b\u74b0\u5883\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u3057\u304b\u3057\u3001\u305d\u308c\u304c\u5b9f\u73fe\u3067\u304d\u305f\u3068\u304d\u3001<\/span><b>\u691c\u67fb\u306e\u6b63\u78ba\u6027\u30fb\u4fe1\u983c\u6027\u306f\u98db\u8e8d\u7684\u306b\u5411\u4e0a\u3057\u307e\u3059<\/b><span style=\"font-weight: 400;\">\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u30a4\u30f3\u30af\u30ed\u30b8\u30e5\u30a2\u3067\u306f\u3001<\/span><b>\u533b\u7642\u898f\u683c\u306b\u6e96\u62e0\u3057\u305f\u8a2d\u8a08\u6280\u8853<\/b><span style=\"font-weight: 400;\">\u3068\u3001<\/span><b>BF\u30b7\u30ea\u30fc\u30ba\u3092\u6d3b\u7528\u3057\u305f\u5438\u97f3\u30fb\u906e\u97f3\u6280\u8853<\/b><span style=\"font-weight: 400;\">\u3092\u7d44\u307f\u5408\u308f\u305b\u3001<\/span><b>\u6700\u9ad8\u6c34\u6e96\u306e\u9759\u3051\u3055<\/b><span style=\"font-weight: 400;\">\u3092\u304a\u5c4a\u3051\u3057\u3066\u3044\u307e\u3059\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u7cbe\u5bc6\u306a\u8074\u529b\u691c\u67fb\u306e\u305f\u3081\u306e\u300c\u9759\u3051\u3055\u300d\u3092\u3054\u691c\u8a0e\u306e\u969b\u306f\u3001\u305c\u3072\u4e00\u5ea6\u3054\u76f8\u8ac7\u304f\u3060\u3055\u3044\u3002<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u306f\u3058\u3081\u306b\uff5c\u300c20dB\u4ee5\u4e0b\u300d\u306f\u3069\u308c\u307b\u3069\u9759\u304b\u306a\u306e\u304b\uff1f 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