{"id":209023,"date":"2024-03-21T14:05:32","date_gmt":"2024-03-21T14:05:32","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/%e3%83%95%e3%82%a3%e3%83%ab%e3%82%bf%e3%83%bc%e5%93%81%e8%b3%aa%e4%bf%82%e6%95%b0%e3%81%ae%e5%85%ac%e5%bc%8f-%e8%a7%a3%e8%aa%ac%e3%81%a8%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95\/"},"modified":"2024-05-17T15:06:03","modified_gmt":"2024-05-17T15:06:03","slug":"%e3%83%95%e3%82%a3%e3%83%ab%e3%82%bf%e3%83%bc%e5%93%81%e8%b3%aa%e4%bf%82%e6%95%b0%e3%81%ae%e5%85%ac%e5%bc%8f-%e8%a7%a3%e8%aa%ac%e3%81%a8%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.electricity-magnetism.org\/ja\/%e3%83%95%e3%82%a3%e3%83%ab%e3%82%bf%e3%83%bc%e5%93%81%e8%b3%aa%e4%bf%82%e6%95%b0%e3%81%ae%e5%85%ac%e5%bc%8f-%e8%a7%a3%e8%aa%ac%e3%81%a8%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95\/","title":{"rendered":"\u30d5\u30a3\u30eb\u30bf\u30fc\u54c1\u8cea\u4fc2\u6570\u306e\u516c\u5f0f | \u89e3\u8aac\u3068\u8a08\u7b97\u65b9\u6cd5"},"content":{"rendered":"

\u30d5\u30a3\u30eb\u30bf\u30fc\u54c1\u8cea\u4fc2\u6570\u306e\u516c\u5f0f\u3068\u8a08\u7b97\u65b9\u6cd5\u3092\u8a73\u3057\u304f\u89e3\u8aac\u3002\u5171\u632f\u5468\u6ce2\u6570\u3084\u5e2f\u57df\u5e45\u3092\u7528\u3044\u305f\u5177\u4f53\u7684\u306a\u8a08\u7b97\u4f8b\u3082\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n

\u30d5\u30a3\u30eb\u30bf\u30fc\u54c1\u8cea\u4fc2\u6570\u306e\u516c\u5f0f | \u89e3\u8aac\u3068\u8a08\u7b97\u65b9\u6cd5<\/h2>\n

\u96fb\u6c17\u56de\u8def\u3084\u96fb\u5b50\u5de5\u5b66\u3092\u5b66\u3076\u969b\u306b\u3001\u54c1\u8cea\u4fc2\u6570\uff08Q\u30d5\u30a1\u30af\u30bf\u30fc<\/i>\uff09\u3068\u3044\u3046\u91cd\u8981\u306a\u6982\u5ff5\u306b\u51fa\u4f1a\u3046\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u7279\u306b\u30d5\u30a3\u30eb\u30bf\u30fc\u56de\u8def\u306b\u304a\u3044\u3066\u306f\u3001\u3053\u306e\u54c1\u8cea\u4fc2\u6570\u304c\u30d5\u30a3\u30eb\u30bf\u30fc\u306e\u6027\u80fd\u3092\u8a55\u4fa1\u3059\u308b\u305f\u3081\u306b\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002\u672c\u8a18\u4e8b\u3067\u306f\u3001\u30d5\u30a3\u30eb\u30bf\u30fc\u54c1\u8cea\u4fc2\u6570\u306e\u516c\u5f0f\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3001\u305d\u306e\u8a08\u7b97\u65b9\u6cd5\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n

\u54c1\u8cea\u4fc2\u6570\uff08Q\u30d5\u30a1\u30af\u30bf\u30fc\uff09\u3068\u306f\u4f55\u304b\uff1f<\/h2>\n

\u54c1\u8cea\u4fc2\u6570\uff08Q\u30d5\u30a1\u30af\u30bf\u30fc<\/i>\uff09\u3068\u306f\u3001\u30d5\u30a3\u30eb\u30bf\u30fc\u3084\u5171\u632f\u56de\u8def\u306e\u6027\u80fd\u3092\u6e2c\u308b\u305f\u3081\u306e\u5c3a\u5ea6\u3067\u3059\u3002\u4e00\u822c\u7684\u306b\u306f\u3001\u30a8\u30cd\u30eb\u30ae\u30fc\u304c\u3069\u308c\u3060\u3051\u52b9\u7387\u3088\u304f\u56de\u8def\u5185\u3067\u8caf\u8535\u3055\u308c\u308b\u304b\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002Q\u30d5\u30a1\u30af\u30bf\u30fc<\/i>\u304c\u9ad8\u3044\u307b\u3069\u3001\u56de\u8def\u306f\u30a8\u30cd\u30eb\u30ae\u30fc\u3092\u52b9\u7387\u3088\u304f\u8caf\u8535\u3067\u304d\u3001\u640d\u5931\u304c\u5c11\u306a\u3044\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002<\/p>\n

\u30d5\u30a3\u30eb\u30bf\u30fc\u306b\u304a\u3051\u308b\u54c1\u8cea\u4fc2\u6570\u306e\u516c\u5f0f<\/h2>\n

\u30d5\u30a3\u30eb\u30bf\u30fc\u56de\u8def\u306b\u304a\u3051\u308b\u54c1\u8cea\u4fc2\u6570\u306f\u3001\u4e00\u822c\u306b\u6b21\u306e\u516c\u5f0f\u3067\u8868\u3055\u308c\u307e\u3059\uff1a<\/p>\n

Q = \\frac{ f_0 }{ \\Delta f }<\/b><\/p>\n

\u3053\u3053\u3067\uff1a<\/p>\n

    \n
  • Q<\/b> \u306f\u54c1\u8cea\u4fc2\u6570<\/li>\n
  • f_0<\/b> \u306f\u5171\u632f\u5468\u6ce2\u6570\uff08\u4e2d\u5fc3\u5468\u6ce2\u6570\uff09<\/li>\n
  • \\Delta f<\/b> \u306f\u5e2f\u57df\u5e45\uff08-3dB\u5e45\uff09<\/li>\n<\/ul>\n

    \u54c1\u8cea\u4fc2\u6570\u306e\u8a08\u7b97\u65b9\u6cd5<\/h2>\n

    \u54c1\u8cea\u4fc2\u6570\u3092\u8a08\u7b97\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u5171\u632f\u5468\u6ce2\u6570\u3068\u5e2f\u57df\u5e45\u306e\u60c5\u5831\u304c\u5fc5\u8981\u3067\u3059\u3002\u3053\u3053\u3067\u306f\u3001\u7c21\u5358\u306a\u4f8b\u3092\u7528\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n

    \u4f8b\u984c\uff1a<\/h3>\n

    \u3042\u308b\u30d5\u30a3\u30eb\u30bf\u30fc\u56de\u8def\u306e\u5171\u632f\u5468\u6ce2\u6570\u304c1kHz\uff081000Hz\uff09\u3067\u3001-3dB\u5e2f\u57df\u5e45\u304c100Hz\u3060\u3063\u305f\u3068\u3057\u307e\u3059\u3002\u3053\u306e\u3068\u304d\u306e\u54c1\u8cea\u4fc2\u6570\u3092\u8a08\u7b97\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n

    \u516c\u5f0f\u306b\u6570\u5024\u3092\u4ee3\u5165\u3059\u308b\u3068\uff1a<\/p>\n

    \\[ Q = \\frac{ 1000 }{ 100 } \\]<\/p>\n

    \u3068\u306a\u308a\u3001\u7d50\u679c\u306f\uff1a<\/p>\n

    Q = 10<\/b><\/p>\n

    \u54c1\u8cea\u4fc2\u6570\u304c\u9ad8\u3044\u3068\u3069\u3046\u306a\u308b\u304b\uff1f<\/h2>\n

    \u54c1\u8cea\u4fc2\u6570\u304c\u9ad8\u3044\u3068\u3044\u3046\u3053\u3068\u306f\u3001\u30d5\u30a3\u30eb\u30bf\u30fc\u304c\u3088\u308a\u30b7\u30e3\u30fc\u30d7\u306a\u7279\u6027\u3092\u6301\u3064\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u5177\u4f53\u7684\u306b\u306f\u3001\u5171\u632f\u5468\u6ce2\u6570\u8fd1\u304f\u306e\u4fe1\u53f7\u3092\u901a\u904e\u3055\u305b\u308b\u80fd\u529b\u304c\u9ad8\u304f\u3001\u4e0d\u8981\u306a\u5468\u6ce2\u6570\u6210\u5206\u3092\u52b9\u679c\u7684\u306b\u9664\u53bb\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n

    \u4ee5\u4e0b\u306b\u3001\u54c1\u8cea\u4fc2\u6570\u304c\u7570\u306a\u308b2\u3064\u306e\u30d5\u30a3\u30eb\u30bf\u30fc\u7279\u6027\u3092\u793a\u3057\u307e\u3059\uff1a<\/p>\n

      \n
    • Q\u304c\u9ad8\u3044\uff08\u4f8b\u3048\u3070\u3001Q=30\uff09:<\/b> \u7279\u5b9a\u306e\u5468\u6ce2\u6570\u306e\u307f\u3092\u975e\u5e38\u306b\u52b9\u7387\u3088\u304f\u901a\u904e\u3055\u305b\u3001\u4ed6\u306e\u3059\u3079\u3066\u306e\u5468\u6ce2\u6570\u3092\u307b\u307c\u5b8c\u5168\u306b\u9664\u53bb\u3059\u308b\u3002<\/li>\n
    • Q\u304c\u4f4e\u3044\uff08\u4f8b\u3048\u3070\u3001Q=3\uff09:<\/b> \u901a\u904e\u3055\u305b\u308b\u5468\u6ce2\u6570\u7bc4\u56f2\u304c\u5e83\u304f\u306a\u308a\u3001\u3088\u308a\u591a\u304f\u306e\u4e0d\u8981\u306a\u4fe1\u53f7\u6210\u5206\u304c\u6df7\u3058\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u3002<\/li>\n<\/ul>\n

      \u307e\u3068\u3081<\/h2>\n

      \u54c1\u8cea\u4fc2\u6570\u306f\u3001\u30d5\u30a3\u30eb\u30bf\u30fc\u56de\u8def\u3084\u5171\u632f\u56de\u8def\u306e\u6027\u80fd\u3092\u8a55\u4fa1\u3059\u308b\u305f\u3081\u306e\u91cd\u8981\u306a\u30d1\u30e9\u30e1\u30fc\u30bf\u3067\u3059\u3002\u5171\u632f\u5468\u6ce2\u6570\u3068\u5e2f\u57df\u5e45\u306e\u95a2\u4fc2\u3092\u3082\u3068\u306b\u8a08\u7b97\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u9ad8\u3044\u54c1\u8cea\u4fc2\u6570\u306f\u3001\u30a8\u30cd\u30eb\u30ae\u30fc\u640d\u5931\u306e\u5c11\u306a\u3044\u9ad8\u6027\u80fd\u306a\u30d5\u30a3\u30eb\u30bf\u30fc\u3092\u610f\u5473\u3057\u3001\u7279\u5b9a\u306e\u5468\u6ce2\u6570\u306e\u307f\u3092\u52b9\u7387\u3088\u304f\u901a\u904e\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u7269\u7406\u3084\u5de5\u5b66\u306e\u57fa\u790e\u3092\u7406\u89e3\u3059\u308b\u4e0a\u3067\u3082\u3001\u3053\u306e\u54c1\u8cea\u4fc2\u6570\u306e\u6982\u5ff5\u3092\u3057\u3063\u304b\u308a\u3068\u628a\u63e1\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n

      \u8a18\u4e8b\u3092\u3054\u89a7\u3044\u305f\u3060\u304d\u3042\u308a\u304c\u3068\u3046\u3054\u3056\u3044\u307e\u3059\u3002\u5c11\u3057\u3067\u3082\u30d5\u30a3\u30eb\u30bf\u30fc\u54c1\u8cea\u4fc2\u6570\u306b\u3064\u3044\u3066\u7406\u89e3\u3092\u6df1\u3081\u308b\u52a9\u3051\u3068\u306a\u308c\u3070\u5e78\u3044\u3067\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

      \u30d5\u30a3\u30eb\u30bf\u30fc\u54c1\u8cea\u4fc2\u6570\u306e\u516c\u5f0f\u3068\u8a08\u7b97\u65b9\u6cd5\u3092\u8a73\u3057\u304f\u89e3\u8aac\u3002\u5171\u632f\u5468\u6ce2\u6570\u3084\u5e2f\u57df\u5e45\u3092\u7528\u3044\u305f\u5177\u4f53\u7684\u306a\u8a08\u7b97\u4f8b\u3082\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","footnotes":""},"categories":[96],"tags":[97],"class_list":["post-209023","post","type-post","status-publish","format-standard","hentry","category-96","tag-97","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50"],"yoast_head":"\n\u30d5\u30a3\u30eb\u30bf\u30fc\u54c1\u8cea\u4fc2\u6570\u306e\u516c\u5f0f | \u89e3\u8aac\u3068\u8a08\u7b97\u65b9\u6cd5<\/title>\n<meta name=\"description\" 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